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Monograph of Cercosporoid fungi from Laos

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doi 10.5943/cream/3/1/2 The Lao People's Democratic Republic (Lao PDR) or Laos is a landlocked country. During a study of cercosporoid fungi in Laos, 113 species were identified including 108 species of true cercosporoid fungi; Cercospora (41 species), Passalora (10), Pseudocercospora (49), and Zasmidium (8). Five species of morphological similar fungi we also found; Cladosporium (1 species), Periconiella (1), Pseudocercosporella (1), Scolecostigmina (1), and Spiropes (1). Sixteen new taxa were established namely, Cercospora duranticola, C. senecionis-walkeri, Passalora. Eighty-seven species are described in full and illustrated, and another 26 species are only listed since they have been previously recorded from Laos.
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Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
34
Monograph of Cercosporoid fungi from Laos
Phengsintham P1,2, Chukeatirote E 1, McKenzie EHC3, Hyde
KD1 and Braun U4
1School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
2Biology Department, Faculty of Sciences, National University of Laos
3Landcare Research, Private Bag 92170, Auckland, New Zealand
4Martin-Luther-Universität, Institut für Biologie, Bereich Geobotanik und Botanischer Garten, Herbarium, Neuwerk 21
06099 Halle/S. Germany
Phengsintham P, Chukeatirote E, McKenzie EHC, Hyde KD, Braun U 2013 Monograph of
Cercosporoid fungi from Laos. Current Research in Environmental & Applied Mycology 3(1), 34
158, doi 10.5943/cream/3/1/2

of cercosporoid fungi in Laos, 113 species were identified including 108 species of true
cercosporoid fungi; Cercospora (41 species), Passalora (10), Pseudocercospora (49), and
Zasmidium (8). Five species of morphological similar fungi we also found; Cladosporium (1
species), Periconiella (1), Pseudocercosporella (1), Scolecostigmina (1), and Spiropes (1). Sixteen
new taxa were established namely, Cercospora duranticola, C. senecionis-walkeri, Passalora
dipterocarpi, P. helicteris-viscidae, Pseudocercospora getoniae, P. mannanorensis var.
paucifasciculata, P. micromeli, P. tectoniae, P. wenlandiphila, Zasmidium aporosae, Z. dalbergiae,
Z. jasminicola, Z. meynae-laxiflorae, Z. micromeli,
Z. suregadae, Z. pavettae. Eighty-seven species
are described in full and illustrated, and another 26 species are only listed since they have been
previously recorded from Laos.
Key words Asia Cercospora Cercosporoid fungus monograph
Article Information
Received 29 January 2013
Accepted 20 March 2013
Published online 25 June 2013
*Corresponding author: Kevin D. Hyde e-mail kdhyde3@gmail.com
Introduction
 
(Lao PDR) or Laos is a landlocked country
with a total area of 236,800 km2, much of
which is forested and mountainous. The
country is divided into seventeen provinces.
With a population of about 6 million in 2011,
the Lao PDR is the second least populated
country in Association of South-East Asia
Nations (ASEAN) with the lowest population
density of about 25 persons per square
kilometer (Laos 2011).
Lao PDR is considered to be globally
important for biodiversity conservation due to
its relatively high forest cover and high diver-
sity of flora and fauna. Approximately 41.5 %
of Lao PDR is covered with forest which
contains an estimated 8,00011,000 species of
flowering plants. The countrys fauna includes
166 reported species of reptiles and amphi-
bians, at least 700 bird species, 90 known
species of bats and at least 100 species of large
mammals (MAF and STEA 2003), but only
201 fungal species (Phengsintham et al. 2012).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
35
The fungi of Laos are poorly known,
although they have been studied since 1959.
Vidal (1959), a French botanist, published a
checklist of plant species of Laos which
included 33 species of Lao fungi. Almost all
names of fungi are local names, but include
some scientific names. Overseas collaboration
was carried with the Mushroom Research
Centre, Papae, Chiang Mai, Thailand and
School of Science, Mae Fah Luang University
(MFU), Chiang Rai, Thailand and other
institutions to document macro- and
microfungi. Phengsintham & Hyde (2003a)
prepared a list of 60 fungi from Laos, and
published on 20 ascomycetes on palms
(Phengsintham & Hyde 2003b). Fungi from
Laos were updated to include 201 species
(Phengsintham et al. 2012).
Sample collection
Leaves of plants with leaf spots or other
lesions were collected during the course of
field trips in Laos. Photos of symptoms,
including the fungal colonies or fruit bodies
were taken. The specimens were collected from
12 provinces (Fig. 1).
Fig. 1 Collection sites. 1 Louang Namtha 2
Bokeo 3 Oudomxay 4 Loungprabang 5
Sayabouri 6 Huaphanh 7 Xiangkhouang 8
Vientiane Province 9 Vientiane Capital 10
Bolikhamsay 11 Khammoune 12 Savannakhet
Examination of fungal structures
Macroscopic characters were observed
using a stereoscope to check (1) lesions (shape,
size, colour, margin), and (2) details of
colonies/caespituli (e.g., amphigenous,
epiphyllous, punctiform, postulate,
inconspicuous, effuse, loose, dense, colour,
etc.).
Microscopic examination, measure-
ment, description, and presentation of drawings
follow standard procedures outlined by Braun
(1995). In the illustrations, thin-walled
structures are depicted by a single line, thick-
walled ones by double lines, and stippling is
used to accentuate shape and pigmentation.
Measurements and microscopic study
Where sufficient material was
available, 30 measurements of each
morphological character were carried out and
the average estimated by using the formula:
(
x
M
n
µm),
Notes m = is size of each
components, n = is number of components
The characters described and/or
measured are mycelia (internal, external),
hyphae (branched or not, width, septation,
colour, wall thin/thick, smooth/verruculose),
stromata (location, e.g., substomatal,
intraepidermal; shape, size, colour; cells,
angular or rounded in outline, size, wall
thick/thin), conidiophores (formation,
solitary/fasciculate/sporodochial, arising from
internal/external hyphae/stromata,
erumpent/through stomata; shape; size;
septation; colour; wall, thin/thick,
smooth/verrucuose), conidiogenous cells
(integrated, terminal/intercalary; length, shape,
e.g., cylindrical/geniculate/sinuous),
conidiogenous loci [scars] (shape, size,
thickened, darkened/pigmented or unthickend
or inconspicuous, etc.), and conidia (formation,
solitary/catenate; shape; size; septation; colour;
wall, thin/thick, smooth/verruculose, apex;
base; hila, size, thickened/unthickened,
pigmented or not).
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Identification of fungi
The concept of Crous & Braun (2003)
for classification of Cercospora and
morphologically similar cercosporoid genera
was followed. The species of cercosporoid
hyphomycetes were determined on the basis of
the currently relevant taxonomic publications,
especially the monograph of Cercospora by
Chupp (1954), and the works of Deighton
(1967, 1983), Ellis (1971, 1976), Hsieh & Goh
(1990), Guo & Hsieh (1995), etc.
Single spore isolation
Conidia were picked directly from the
substrate using fine forceps or a needle. The
conidia were placed in sterilized water and
agitated in order to provide a spore suspension
(Choi et al. 1999).
The suspension was prepared on
sterilized glass slides. Sixteen squares were
marked on the bottom of a water agar plate and
the prepared spore suspension was then
transferred with a sterilised pipette, onto the
surface of the water agar plate, above each of
the drawn squares. Alternatively about six
drops of the suspension were pipetted onto the
centre of the agar plate and this was carefully
shaken to spread the suspension. The plates
were incubated at 25oC for 1224 hours. Once
the conidia had germinated, a sterilised glass
needle was used to pick up a small piece of
agar containing a spore. If the conidia did not
germinate after 12 hours, then the plates were
sealed with film and examined periodically.
Ten germinated spores are transferred and
distributed evenly onto two PDA plate and
incubated at 25oC until their colony diameters
were about 1 to 2 cm. A small piece of
mycelium with agar was then cut out and
transferred to a fresh PDA plate.
Isolates of single spores were deposited
in the culture collection at Herbarium, Biology
Department, School of Science, Mae Fah
Luang University, Biotech Center, Bangkok
and CBS.
Herbarium specimens
Dried specimens were prepared and
stored in the herbaria of the Mae Fah Luang
University, Chiang Rai, Thailand and the
Biology Department, Faculty of Science,
National University of Laos. Duplicates are
preserved in the herbarium of the Institute of
Biology, Geobotany and Botanical Garden,
Halle (Saale), Germany (HAL).
Results
By integrating the morphological and
molecular characters, 113 cercosporoid species
were identified including 108 species of true
cercosporoid fungi Cercospora (41 species),
Passalora (10), Pseudocercospora (49),
Zasmidium (8) and five species of
morphological similar fungi Cladosporium (1
species), Periconiela (1), Pseudocercosporella
(1), Scolecostigmina (1), Spirops (1). Sixteen
new taxa are described: Cercospora
duranticola, C. senecionis-walkeri, Passalora
dipterocarpi, P. helicteris-viscidae,
Pseudocercospora getoniae, P. mannanorensis
var. paucifasciculata, P. micromeli, P.
tectoniae, P. wendlandiphila, Zasmidium
aporosae, Z. dalbergiae,
Z. jasminicola, Z.
meynae-laxiflorae, Z. micromeli,
Z. suregadae,
Z. pavettae.
Eighty-seven species are described in
full and illustrated, and another 26 species are
only listed because they have been previously
recorded from Laos (Table 1).
Key to true cercosporoid genera
This key contains only the true
cercosporoid genera discussed and treated in
this work (Crous & Braun 2003). The key to
identify species, alphabetically arranged by
host families, are based on models of Chupp
(1954), Ellis (1971, 1976), Deighton (1967,
1973, 1976, 1979), Hsieh & Goh (1990), and
Guo & Hsieh (1995).
1. Conidiogenous loci inconspicuous or
subdenticulate, but always unthickened and not
darkened or subconspicuous, i.e. unthickened,
but somewhat refractive or rarely very slightly
darkened or only outer rim slightly darkened or
refractive (vi
.Pseudocercospora
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Table 1 Cercosporoid fungi found in Laos
Ser#
Fungus
Host family
Laos
I. True cercosporoid fungi
1
Cercospora achyranthis
Amaranthaceae
New record
2
Cercospora alocasiae
Araceae
New record
3
Cercospora apii
Malvaceae
New record,
new host
4
Cercospora artemisiae
Asteraceae
New record
5
Cercospora asparagi
Asparagaceae
New record
6
Cercospora begoniae
Begoniaceae
New record
7
Cercospora bidentis
Asteraceae
New record
8
Cercospora brassicicola
Brassicaceae
New record
9
Cercospora cannabis
Cannabaceae
New record
10
Cercospora capsicigena
Solanaceae
New record
11
Cercospora cocciniae
Cucurbitaceae
New record
12
Cercospora duranticola
Verbenaceae
New species
13
Cercospora erechtitis
Asteraceae
New record
14
Cercospora hyptidicola
Lamiaceae
New record
15
Cercospora ipomoeae
Convolvulaceae
New record
16
Cercospora meliicola
Meliaceae
New record
17
Cercospora nasturtii
Brassicaceae
New record
18
Cercospora nicotianae
Solanaceae
New record
19
Cercospora paederiicola
Rubiaceae
New record
20
Cercospora physalidis
Solanaceae
New record
21
Cercospra ricinella
Euphorbiaceae
New record
22
Cercospora senecionis-
walkeri
Asteraceae
New species
23
Cercospora sp.
Bignoniaceae
New record
24
Cercospora stahlianthi
Zingiberaceae
New record
25
Cercospora taccae
Taccaceae
New record
26
Cercospora trewiae
Euphorbiaceae
New record
27
Cercospora volkameriae
Lamiaceae
New record
28
Cercospora zinniae
Asteraceae
New record
29
Passalora aenea
Fabaceae
New record
30
Passalora bougainvilleae
Nyctaginaceae
New record
31
Passalora capsicicola
Solanaceae
New record
32
Passalora dipterocarpi
Dipterocarpaceae
New species
33
Passalora erytrinae
Fabaceae
New record
34
Passalora haldinae
Rubiaceae
New record
35
Passalora helicteris-
viscidae
Malvaceae
New species
36
Passalora henningsii
Euphorbiaceae
New record
37
Passalora perfoliati
Asteraceae
New record
38
Passalora tithoniae
Asteraceae
New record
39
Pseudocercospora alangii
Cornaceae
New record
40
Pseudocercospora
baliospermi
Euphorbiaceae
New record
41
Pseudocercospora
buddlejae
Scrophulariaceae
New record
42
Pseudocercospora
catappae
Combretaceae
New record
43
Pseudocercospora
cotizensis
Fabaceae
New record
44
Pseudocercospora
duabangae
Lythraceae
New record
45
Pseudocercospora
eupatoriiformasani
Asteraceae
New record
46
Pseudocercospora formasana
Verbenaceae
New record
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Ser#
Fungus
Host family
Laos
47
Pseudocercospora
fuligena
Solanaceae
New record
48
Pseudocercospora
getoniae
Combretaceae
New species
49
Pseudocercospora
gmelinae
Lamiaceae
New record
50
Pseudocercospora
holarrhenae
Apocynaceae
New record
51
Pseudocercospora
jussiaeae
Onagraceae
New record
52
Pseudocercospora
lythracearum
Lythraceae
New record
53
Pseudocercospora
macarangae
Euphorbiaceae
New record
54
Pseudocercospora maesae
Primulaceae
New record
55
Pseudocercospora
mannanorensis var.
paucifasciculata
Tiliaceae
New variety
56
Pseudocercospora
melochiae
Malvaceae
New record
57
Pseudocercospora
micromeli
Rutaceae
New species
58
Pseudocercospora musae
Musaceae
59
Pseudocercospora
nigricans
Fabaceae
New record
60
Pseudocercospora
ocimicola
Lamiaceae
New record
61
Pseudocercospora
paraguayensis
Myrtaceae
New record
62
Pseudocercospora piperis
Piperaceae
New record
63
Pseudocercospora
polygonicola
Polygonaceae
New record
64
Pseudocercospora
puerariicola
Fabaceae
New record
65
Pseudocercospora
sphaerellae-eugeniae
Myrtaceae
New record
66
Pseudocercospora stahlii
Passifloraceae
New record
67
Pseudocercospora
stizolobii
Fabaceae
New record
68
Pseudocercospora
tabernaemontanae
Apocynaceae
New record
69
Pseudocercospora
tectonae
Verbenaceae
New species
70
Pseudocercospora
tetramelis
Tetramelaceae
New record
71
Pseudocercospora
tiliacorae
Menispermaceae
New record
72
Pseudocercospora
trichophila var. punctata
Solanaceae
New record
73
Pseudocercospora
wendlandiphila
Rubiaceae
New species
74
Pseudocercospora
wrightiae
Apocynaceae
New record
75
Zasmidium aporosae
Euphorbiaceae
New species
76
Zasmidium dalbergiae
Leguminosae
New species
77
Zasmidium jasminicola
Oleaceae
New species
78
Zasmidium meynae-
laxiflorae
Rubiaceae
Comb.nov.
79
Zasmidium micromeli
Rutaceae
New species
80
Zasmidium pavettae
Rubiaceae
New species
81
Zasmidium sp.
Anacardiaceae
New species
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Ser#
Fungus
Host family
Laos
82
Zasmidium suregadae
Euphorbiaceae
New species
II. Morphological similar fungi
83
Cladosporium colocasiae
Araceae
New record
84
Periconiella lygodii
Lygodiaceae
New record
85
Pseudocercosporella
bakeri
Convolvulaceae
New record
86
Scolecostigmina
mangiferae
Anacardiaceae
New record
87
Spiropes clavatus
Anacardiaceae
New record
III Additional List
88
Cercospora canescens
Fabaceae
New record
89
Cercospora citrulina
Cucurbitaceae
New record
90
Cercospora coffeicola
Rubiaceae
New record
91
Cercospora crotalariae
Fabaceae
New record
92
Cercospora diplaziicola
Woodsiaceae
New record
93
Cercospora erythrinicola
Fabaceae
New record
94
Cercospora nilghirensis
Asteraceae
New record
95
Cercospora papayae
Caricaceae
New record
96
Cercospora petersii
Smilacaceae
New record
97
Cercospora sambuci
Caprifoliaceae
New record
98
Cercospora scrophulariae
Scrophulariaceae
New record
99
Cercospora sonchi
Asteraceae
New record
100
Cercospora tridacis-
procumbentis
Asteraceae
New record
101
Pseudocercospora
centrosematicola
Fabaceae
New record
102
Pseudocercospora cycleae
Menispermaceae
New record
103
Pseudocercospora
ecdysantherae
Apocynaceae
New record
104
Pseudocercospora
giranensis
Euphorbiaceae
New record
105
Pseudocercospora ixorae
Rubiaceae
New record
106
Pseudocercospora
malloticola
Euphorbiaceae
New record
107
Pseudocercospora namae
Hydroleaceae
New record
108
Pseudocercospora
olacicola
Olacaceae
New record
109
Pseudocercospora puderi
Rosaceae
New record
110
Pseudocercospora punicae
Lythraceae
New record
111
Pseudocercospora
sarcocephali
Rubiaceae
New record
112
Pseudocercospora
scopariicola
Plantanginaceae
New record
113
Pseudocercospora
tremicola
Cannabaceae
New record
1. Condiogenous loci conspicuous i.e. thickened and darkened throughout only with a minute
central pore...........................................................................................................................................2
2. With verruculose superficial secondary mycelium; conidia amero- to scolecosporous, mostly
verruculose............................................................................................................................Zasmidium
2. If secondary mycelium present, hyphae smooth or almost so..........................................................3
3. Conidia hyaline or subhyaline, scolecosporous, acicular, obclavate-cylindrical, filiform, usually
pluriseptate.................................................................................................................Cercospora
3. Conidia pigmented or, if subhyaline, conidia none scolecosporous, ellipsoid-ovoid, short
cylindrical, fusoid and only few septa.......................................Passalora
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Genus Cercospora
Amaranthaceae
Single species, on Achyranthes..................................................................Cercospora achyranthis (1)
Araceae
Single species, on Alocasia...........................................................................Cercospora alocasiae (2)
Asparagaceae
Single species, on Asparagus.........................................................................Cercospora asparagi (5)
Asteraceae = Compositae
On Artemisia; stromata 1530 µm in diam.; conidiophores 3485 × 45 µm, unbranched,
geniculate; conidia 2549 × 24 µm, 14-septate.......................................Cercospora artemisiae (4)
On Bidens; stromata 1020 µm in diam.; conidiophores 25117 × 47 µm, unbranched, geniculate;
conidia 3162 × 23 µm, 26-septate..............................................................Cercospora bidentis (7)
On Erechtites; stromata 1530 µm in diam.; conidiophores 435 × 58 µm, unbranched, geniculate;
conidia 2883 × 23 µm, 37-septate..........................................................Cercospora erechtitis (13)
On Senecio; stromata 1025 µm in diam.; conidiophores 67170 × 56 µm, unbranched, geniculate;
conidia 1782 × 47 µm, 08-septate...........................................Cercospora senecionis-walkeri (22)
On Zinnia; stromata 1020 µm in diam.; conidiophores 3295 × 46 µm, unbranched, geniculate;
conidia 30102 × 23 µm, 39-septate...........................................................Cercospora zinniae (28)
Begoniaceae
Single species, on Begonia..........................................................................Cercospora begoniae (6)
Bignoniaceae
Single species, on Oroxylum...............................................................................Cercospora sp. (23)
Brassicaceae
On Brassica; stromata 1030 µm in diam.; conidiophores 15232 × 46 µm, unbranched,
geniculate; conidia 30288 × 1.55 µm, 220-septate.............................Cercospora brassicicola (8)
On Nasturtium; stromata up to 15 µm in diam.; conidiophores 20134 × 46 µm, unbranched,
geniculate; conidia 2275 × 34 µm, 17-septate.....................................Cercospora nasturtii (17)
Cannabaceae
Single species, on Cannabis...................................................................Cercospora cannabis (9)
Convolvulaceae
Single species, on Ipomoea................................................................... Cercospora ipomoeae (15)
Cucurbitaceae
Single species; on Coccinia.....................................................................Cercospora cocciniae (11)
Euphorbiaceae
On Ricinus; stromata 1520 µm in diam.; conidiophores 15105 × 46 µm, unbranched, geniculate;
conidia 3298 × 34 µm, 311-septate........................................................Cercospora ricinella (21)
On Trewia; stromata 1072 µm in diam.; conidiophores 35215 × 47 µm, unbranched, geniculate;
conidia 74135 × 35 µm, 411-septate........................................................Cercospora trewiae (26)
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Lamiaceae
Single species, on Hyptis........................................................................Cercospora hyptidicola (14)
Malvaceae
Single species, on Byttneria..................................................................................Cercospora apii (3)
Meliaceae
Single species, on Chukrasia....................................................................Cercospora meliicola (16)
Rubiaceae
Single species, on Paederia....................................................................Cercospora paederiicola (19)
Solanaceae
On Capsicum; stromata 1030 µm in diam.; conidiophores 2163 × 46 µm, unbranched, not
geniculate; conidia 4970 × 34 µm, 45-septate..................................Cercospora capsicigena (10)
On Nicotiana; stromata 1033 µm in diam.; conidiophores 20395 × 47 µm, unbranched,
geniculate; conidia 94267 × 34 µm, 58-septae....................................Cercospora nicotianae (18)
On Physalis; stromata 1532 µm in diam.; conidiophores 1056 × 36 µm, unbranched, geniculate;
conidia 5259 × 34 µm, 34-septate.......................................................Cercospora physalidis (20)
Taccaceae
Single species, on Tacca..................................................................................Cercospora taccae (25)
Verbenaceae
On Clerodendron; stromata 1945 µm in diam.; conidiophores 12148 × 45 µm, unbranched,
geniculate; conidia 47145 × 23 µm, 316-septate..............................Cercospora volkameriae (27)
On Duranta; stromata 1752 µm in diam.; conidiophores 1735 × 45 µm, unbranched, not
geniculate; conidia 24144 × 25 µm, 1016-septate.............................Cercospora duranticola (12)
Zingiberaceae
Single species, on Stahlianthus..................................................................Cercospora stahlianthi (24)
Genus Passalora
Asteraceae
On Chromolaena; stromata 1045 µm in diam.; conidiophores 15150 × 36 µm, unbranched,
geniculate; conidia 857 × 36 µm, 36-septate...........................................Passalora perfoliati (37)
On Tithonia; stromata 3550 µm in diam.; conidiophores 14144 × 35 µm, unbranched, not
geniculate; conidia 1775 × 36 µm, 03-septate..........................................Passalora tithoniae (38)
Dipterocarpaceae
Single species, on Dipterocarpus..............................................................Passalora dipterocarpi (32)
Euphorbiaceae
Single species, on Manihot...........................................................................Passalora henningsii (36)
Fabaceae
On Cassia; stromata 1035 µm in diam.; conidiophores 15140 × 35 µm, unbranched, not
geniculate; conidia 1953 × 46 µm, 25-septate...............................................Passalora aenea (29)
On Erythrina; stromata 1740 µm in diam.; conidiophores 1854 × 46 µm, unbranched, not
geniculate; conidia 4358 × 45 µm, 03-septate........................................Passalora erythrinae (33)
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Nystaginaceae
Single species, on Bougainvillea..........................................................Passalora bougainvilleae (30)
Rubiaceae
Single species; on Haldina.............................................................................Passalora haldinae (34)
Solanaceae
Single species; on Capsicum......................................................................Passalora capsicicola (31)
Sterculiaceae
Single species; on Helicteres........................................................Passalora helicteris-viscidae (35)
Genus Pseudocercospora
Alangiaceae
Single species, on Alangium.................................................................Pseudocercospora alangii (39)
Apocynaceae
On Holarrhena; stromata 2040 µm in diam.; conidiophores 2337 × 46 µm, unbranched,
geniculate; conidia 2786 × 24 µm, 27-septate.......................Pseudocercospora holarrhenae (50)
On Tabernaemontana; stromata 1570 µm in diam.; conidiophores 717 × 25 µm, unbranched,
rarely geniculate; conidia 1577 × 24 µm, 05-septate...Pseudocercospora tabernaemontanae (68)
On Wrightia; stromata 2042 µm in diam.; conidiophores 1030 × 35 µm, unbranched, not
geniculate; conidia 28107 × 36 µm, 17-septate..........................Pseudocercospora wrightiae (74)
Asteraceae
Single species, on Chromolaena......................................Pseudocercospora eupatorii-formosani (45)
Combretaceae
On Getonia; stromata 1030 µm in diam.; conidiophores 2099 × 45 µm, unbranched, geniculate;
conidia 5070 × 24 µm, 38-septate...............................................Pseudocercospora getoniae (48)
On Terminalia; stromata 2055 µm in diam.; conidiophores 1225 × 35 µm, branched, geniculate;
conidia 5180 × 34 µm, 412-septate.............................................Pseudocercospora catappae (42)
Datiscaceae
Single species, on Tetrameles..........................................................Pseudocercospora tetramelis (70)
Euphorbiaceae
On Baliospermum; stromata 1535 µm in diam.; conidiophores 16160 × 25 µm, unbranched,
geniculate; conidia 15101 × 35 µm, 18-septate......................Pseudocercospora baliospermi (40)
On Macaranga; stromata 3545 µm in diam.; conidiophores 30210 × 45 µm, unbranched,
geniculate; conidia 2258 × 34 µm, 15-septate.......................Pseudocercospora macarangae (53)
Fabaceae
On Cassia; stromata 1040 µm in diam.; conidiophores 1569 × 35 µm, branched, geniculate;
conidia 4053 × 2.54 µm, 05-septate............................................Pseudocercospora nigricans (59)
On Crotalaria; stromata 830 µm in diam.; conidiophores 1360 × 36 µm, branched, geniculate;
conidia 2885 × 35 µm, 08-septate.............................................Pseudocercospora cotizensis (43)
On Mucuna; stromata 2050 µm in diam.; conidiophores 50118 × 34 µm, unbranched,
geniculate; conidia 4764 × 45 µm, 17-septate.........................Pseudocercospora stizolobii (67)
On Pueraria; stromata 1040 µm in diam.; conidiophores 930 × 35 µm, branched, geniculate;
conidia 680 × 23 µm, 16-septate...........................................Pseudocercospora puerariicola (64)
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Lamiaceae
Single species, on Ocimum..............................................................Pseudocercospora ocimicola (60)
Lythraceae
On Duabanga; stromata 465 µm in diam.; conidiophores 834 × 25 µm, unbranched, geniculate;
conidia 1861 × 23 µm, 17-septate............................................Pseudocercospora duabangae (44)
On Lagerstroemia; stromata 849 µm in diam.; conidiophores 516 × 35 µm, unbranched, not
geniculate; conidia 3652 × 23 µm, 35-septate.......................Pseudocercospora lythracearum(52)
Malvaceae
Single species, on Melochia............................................................Pseudocercospora melochiae (56)
Menispermaceae
Single species, on Tiliacora............................................................Pseudocercospora tiliacorae (71)
Musaceae
Single species, on Musa........................................................................Pseudocercospora musae (58)
Myrsinaceae
Single species, on Maesa.....................................................................Pseudocercospora maesae (54)
Myrtaceae
On Eucalyptus; stromata 1420 µm in diam.; conidiophores 1053 × 34 µm, branched, geniculate;
conidia 1825 × 24 µm, 34-septate......................................Pseudocercospora paraguayensis (61)
On Syzygium; stromata 840 µm in diam.; conidiophores 824 × 36 µm, unbranched, geniculate;
conidia 578 × 23 µm, 06-septate.............................Pseudocercospora sphaerellae-eugeniae (65)
Onagraceae
Single species, on Ludwigia..........................................................Pseudocercospora jussiaeae (51)
Passifloraceae
Single species, on Passiflora..............................................................Pseudocercospora stahlii (66)
Piperaceae
Single species, on Piper........................................................................Pseudocercospora piperis (62)
Polygonaceae
Single species, on Polygonum.....................................................Pseudocercospora polygonicola (63)
Rubiaceae
Single species, on Wendlandia................................................Pseudocercospora wendlandiphila (73)
Rutaceae
Single species, on Micromelum.......................................................Pseudocercospora micromeli (57)
Scrophulariaceae
Single species, on Buddleja...........................................................Pseudocercospora buddlejae (41)
Solanaceae
On Solanum; stromata 940 µm in diam.; conidiophores 650 × 34 µm, unbranched, geniculate;
conidia 3060 × 35 µm, 16-septate......................Pseudocercospora trichophila var. punctata (72)
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On Lycopersicon; stromata 1525 µm in diam.; conidiophores 831 × 45 µm, unbranched,
geniculate; conidia 2176 × 2.54 µm, 16-septate...........................Pseudocercospora fuligena (50)
Tiliaceae
Single species, on Microcos...................Pseudocercospora mananorensis var. paucifasciculata (57)
Verbenaceae
On Gmelina; stromata 410 µm in diam.; conidiophores 2770 × 57 µm, unbranched, geniculate;
conidia 1040 × 46 µm, 110-septate.............................................Pseudocercospora gmelinae (51)
On Lantana; stromata 1545 µm in diam.;conidiophores 2330 × 35 µm, unbranched, geniculate;
conidia 3298 × 34 µm, 310-septate..........................................Pseudocercospora formosana (49)
On Tectona; stromata 2540 µm in diam.; conidiophores 520 × 34 µm, unbranched, not
geniculate; conidia 3563 × 34 µm, 25-septate..............................Pseudocercospora tectonae (69)
Genus Zasmidium
Anacardiaceae
Single species, on Spondias.....................................................................................Zasmidium sp. (81)
Euphorbiaceae
On Aporosa; stromata absent; conidiophores 683 × 34 µm; conidia 539 × 23 µm, 03-
septate............................................................................................................Zasmidium aporosae (75)
On Suregada; stromata 3570 µm in diam.; conidiophores 34110 × 34 µm; conidia 46153 × 24
µm, 110-septate.........................................................................................Zasmidium suregadae (82)
Fabaceae
Single species, on Dalbergia......................................................................Zasmidium dalbergiae (76)
Oleaceae
Single species, on Jasminum.................................................................Zasmidium jasminicola (77)
Rubiaceae
On Meyna; stromata 1040 µm in diam.; conidiophores 1498 × 34 µm; conidia 487 × 24 µm,
06-septate.....................................................................................Zasmidium meynae-laxiflorae (78)
On Pavetta; stromata up to 23 µm in diam.; conidiophores 1234 × 34 µm; conidia 565 × 24
µm, 05-septate.............................................................................................Zasmidium pavettae (80)
Rutaceae
Single species, on Micromelum................................................................Zasmidium micromeli (79)
Key to morphologically similar genera
Leaf-inhabiting, dematiaceous, hypho-
mycetous genera with thalloblastic to
holoblastic conidiogenesis, which are not
Mycosphaerella anamorphs, can be considered
to b  s. lat   
sometimes been confused with true
cercosporoids, and determinations of and
differentiations between the genera concerned
are often difficult for non-specialists (Crous &
Braun 2003). The present key is based on the
keys to cercosporoid and morphologically
similar genera of Crous & Braun (2003) and
Ellis (1971, 1976) and has been adapted. The
key to identify particular species are
alphabically arranged by host families. They
are based on models of Chupp (1954), Ellis
(1971, 1976), Deighton (1967, 1973, 1976,
1979), Hsieh & Goh (1990), and Guo & Hsieh
(1995).
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1. Conidiophores long, forming distinct synnemata; conidiogenous loci conspicuous, thickened,
darkened or distinctly denticulate; conidia often thick-walled, septate or distoseptate;
hyperparasitic on Meliolaceae.............................................................................................Spiropes
1. Conidiophores not forming distinct synnemata; conidiogenous cells (i.e. conidiophores
reduced to conidiogenous cells) solitary, arising from superficial hyphae, or conidiophores
loosely to densely fasciculate or forming sporodochia; not hyperparasitic on Meliolaceae
..........................................................................................................................................................2
2. Conidiophores and conidia colourless; conidiogenous loci inconspicuous, neither thickened
nor darkened; conidia scolecosporous.............................................................Pseudocercosporella
2. Conidiophores and conidia pigmented........................................................................................3
3. Conidiogenous cells percurrent, with annellations, conidiogenous loci neither thickened nor
darkened..................................................................................................................Scolecostigmina
3. Conidiogenous cells sympodial, without annellations; conidiogenous loci conspicuous,
thickened and darkened...................................................................................................................4
4. Conidiophores usually unbranched, in any case without branched head (apical part);
conidiogenous loci protuberant, coronate, i.e. with a central converx part (dome) surrounded by a
raised periclinal rim; conidia in long, often branched acropatal chains.....................Cladosporium
4. Conidiophores long, composed of erect long stalks and more or less branched heads, usually
strongly branched; conidial scars either unthickened and not darkened or thickened and
darkened, but not coronate...............................................................................................................5
5. Conidial scars conspicuous, thickened and darkened-refractive; conidia solitary and
scolecosporous (in the Laos species).............................................................................Periconiella
Genus Cladosporium
Araceae
On Colocasia; stromata absent; conidiophores 28165 × 39 µm; conidia 511 × 26 µm, 03-
septate................................................................................................Cladosporium colocasiae (83)
Genus Periconiella
Schizaeaceae
Single species, on Lygodium..................................................................Periconiella lygodii (84)
Genus Pseudocercosporella
Convolvulaceae
Single species, on Ipomoea...........................................................Pseudocercosporella bakeri (85)
Genus Scolecostigmina
Anacardiaceae
Single species, on Mangifera........................................................Scolecostigmina mangiferae (86)
Genus Spiropes
Anacardiaceae
Single species, on Mangifera.........................................................................Spiropes clavatus (87)
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True cercosporoids
(1) Cercospora achyranthis Syd. & P. Syd.,
Ann. Mycol. 7: 171, 1909. Figs 23.
Leaf spots round, 15 mm diam., pale
brown to dark brown in the centre, and with
medium brown to purple-brown margin.
Caespituli amphigenous, scattered, dark brown.
Mycelium internal; hyphae branched, 35 µm
wide (
x
= 4.5 µm, n = 5), septate, constricted
at the septa, distance between septa 510 µm
(
x
= 8 µm, n = 5), brownish or green-hyaline,
wall 0.30.5 µm wide (
x
= 0.38 µm, n = 5),
smooth, forming plate-like plectenchymatous
stromatic hyphal aggregations. Stromata
developed, oval to ellipsoidal, substomatal, 12
25 µm diam. (
x
= 20.71 µm, n = 7), brown,
composed of swollen hyphal cells, subglobose,
rounded to angular in outline, 58 µm wide (
x
= 5.67 µm, n = 26), brown to dark brown, wall
0.51 µm wide (
x
= 0.86 µm, n = 26), smooth.
Conidiophores fasciculate, arising from
stromata (312 per fascicle), emerging through
stomata, unbranched, straight to curved,
cylindrical, 26145 × 47 µm (
x
= 74.8 × 5.19
µm, n = 16), 04-septate, distance between
septa 854 µm (
x
= 29.7 µm, n = 27), medium
brown, paler at the apex, wall 0.51 µm wide
(
x
= 0.75 µm, n = 16), smooth, 02 times
geniculate. Conidiogenous cells integrated,
terminal, cylindrical, 2354 × 35 µm (
x
=
37.3 × 3.8 µm, n = 10), pale brown;
conidiogenous loci conspicuous, subcircular,
23 µm wide (
x
= 2.62 µm, n = 30), dark
brown, wall 0.50.8 µm thick (
x
= 0.68 µm, n
= 30). Conidia solitary, acicular, straight to
curved, 44194 × 35 µm (
x
= 95.27 × 3.73
µm, n = 30), 316-septate, hyaline, thin-
walled, smooth, tip acute, base truncate to
obconically truncate, hila thickened and
darkened, 1.53 µm wide (
x
= 2.5 µm, n =
30), wall of the hila 0.50.8 µm (
x
= 0.51 µm,
n = 30) thick.
Colonies on PDA after 3 weeks at 25°C
grey, 4.55 mm diam., spreading surface
ridged, smooth, brown; hyphae 112 µm wide
(
x
= 4.3 µm, n = 30), septate, constricted at the
septa, distance between septa 826 µm (
x
=
13.08 µm, n = 30), brown to subhyaline, wall
0.31 µm wide (
x
= 0.66 µm, n = 30), smooth.
Conidia not formed in culture.
Hosts Achyranthes aspera L., A.
bidentata Blume and A. japonica (Miq.) Nakai
(Amaranthaceae).
Distribution Asia: China, India,
Japan, Korea, Laos, Taiwan; North America
and West Indies: Domican Republic, Puerto
Rico.
Material examined Vientiane Capital,
Xaysetha District, Non Kho Village, on leaves
of Achyranthes aspera, 11 May 2006, P.
Phengsintham (P43); Xaythany District, Dong
Dok Village, on leaves of A. aspera, 9 June
2007, P. Phengsintham (P283); Dong Dok
Village, on leaves of A. aspera, 12 August
2007, P. Phengsintham (P298); Loungprabang
Province, Lak 10 Village, on leaves of A.
aspera, 7 June 2006, P. Phengsintham (P66).
Notes The collections from Laos are
similar to those described by Chupp (1954)
[conidiophores fasciculate, 2080 × 46 µm,
pale olivaceous-brown; conidia 40150 × 35
µm].
Literature Saccardo (1913: 1429),
Chupp (1954: 30), Vasudeva (1963: 31), Shin
& Kim (2001: 24), Crous & Braun (2003: 42).
(2) Cercospora alocasiae Goh & W.H. Hsieh,
Trans. Mycol. Soc. Republ. China 2: 8687,
1987. Figs 45.
Cercospora alocasiae Sawada,
Taiwan Agric. Rev. 38: 693, 1942 (nom.
inval.).
Leaf spots small to fairly large,
suborbicular to irregular, 225 mm in diam.,
grey-brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered,
white brown. Mycelium internal; hyphae
branched, 24 µm wide (
x
= 3 µm, n = 7),
septate, constricted at the septa, distance
between septa 715 µm wide (
x
= 10.5 µm, n
= 7), brownish or green-hyaline, wall 0.30.5
µm wide (
x
= 0.46 µm, n = 7), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata developed,
small to medium-sized, globular to
subglobular, substomatal and intraepidermal,
1732 µm in diam. (
x
= 22.8 µm, n = 7), dark
brown to black in mass, composed of swollen
hyphal cells, subglobose, rounded to angular in
outline, 510 µm wide (
x
= 7.9 µm, n = 7),
brown to dark brown, wall 0.50.8 µm wide (
x
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= 0.59 µm, n = 7), smooth. Conidiophores
fasciculate, arising from stromata (27 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 10
88 × 46 µm (
x
= 43.4 × 5.2 µm, n = 13), 03-
septate, distance between septa 737 µm (
x
=
17.4 µm, n = 17), medium brown, paler at the
apex, wall 0.50.8 µm wide (
x
= 0.63 µm, n =
17), smooth, 02-times geniculate.
Conidiogenous cells terminal, cylindrical, 20
37 × 46 µm (
x
= 27.3 × 5 µm, n = 8), pale
brown; conidiogenous loci conspicuous,
subcircular, 1.52 µm wide (
x
= 1.75 µm, n =
8), wall 0.50.8 µm thick (
x
= 0.57 µm, n =
8), thickened and darkened. Conidia solitary,
acicular to obclavate, straight to curved, 57
108 × 23 µm (
x
= 79 × 2.6 µm, n = 10), 6
11-septate, hyaline to subhyaline, thin-walled,
0.3 µm (
x
= 0.3 µm, n = 10), smooth, tip
acute, base truncate to obconically truncate;
hila thickened and darkened, 0.52 µm wide
(
x
= 1.33 µm, n = 10), wall of the hila 0.30.5
µm (
x
= 0.36 µm, n = 8) thick.
Colonies on PDA after 3 weeks at 25
°C grey, 1020 mm diam., surface ridged and
smooth, mycelium light brown-violet.
Hosts Alocasia indica (Lour.) Spach,
A. macrorrhiza (L.) G. Don, A. odora (Lindl.)
K. Koch, Alocasia sp., Pistia stratioites L.
(Araceae).
Distribution Asia: China, India,
Japan, Laos, Myanmar, Nepal, Taiwan,
Thailand; North America and West Indies:
Cuba; South America: Venezuela.
Material examined Vientiane
Province, Home District, Pha En Village,
mixed deciduous forest, on leaves of Alocasia
macrorrhiza, 18 November 2009, P.
Phengsintham (P464); Phongsali Province,
Phongsali District, Phon Hin Village, mixed
deciduous forest, on leaves of A. macrorrhiza,
22 June 2010, P. Phengsintham (P598).
(3) Cercospora apii Fresen., Beitr. Mykol.
3:91, 1863. Figs 67 s. lat. (sensu Crous &
Braun 2003).
Cercospora penicillata var. apii
Fuckel, Hedwigia 2: 132, 1863.
Leaf spots subcircular to irregular, 13
mm diam., brown to dark brown in the centre,
margin yellowish. Caespituli amphigenous,
scattered, dark brown. Mycelium internal;
hyphae branched, 25 µm wide (
x
= 3 µm, n =
11), septate, constricted at the septa, distance
between septa 412 µm (
x
= 7.2 µm, n = 11),
brownish or green hyaline, wall 0.30.8 µm
wide (
x
= 0.50 µm, n = 11), smooth, forming
plate like plectenchymatous stromatic hyphal
aggregations. Stromata well developed, oval to
ellipsoidal, 1030 µm diam. (
x
= 20 µm, n =
13), brown, substomatal, intraepidermal,
composed of swollen hyphal cells, subglobose,
rounded and angular in outline, 37 µm wide
(
x
= 6 µm, n = 14), brown to dark brown, wall
0.51 µm wide (
x
= 0.9 µm, n = 15).
Conidiophores formed singly or fasciculate,
arising from stromata (17 per fascicle),
emerging through stomata, unbranched,
straight to curved, cylindrical, 1481 × 46 µm
(
x
= 45.3 × 4,7 µm, n = 30), 03-septate,
distance between septa 1035 µm long (
x
=
21.1 µm, n = 30), medium brown, paler at the
apex, wall 0.50.8 µm wide (
x
= 0.79 µm, n =
30), smooth, 01-times geniculate, width
uniform; conidiogenous cells integrated,
terminal or intercalary, cylindrical, 1035 × 3
5 µm, (
x
= 22.9 × 4.46 µm, n = 28), pale
brown; conidiogenous loci conspicuous,
subcircular, 23 µm wide (
x
= 0.63 µm, n =
30), dark brown, wall 0.60.8 µm thick (
x
=
0.70 µm, n = 30). Conidia solitary, acicular,
straight to curved, 9154 × 27 µm (
x
= 108.5
Fig. 2 Cercospora achyranthis from
Achyranthes aspera: 12. Conidiophores. 3.
Stroma with attached conidiophores. 45.
Conidiophores. 69. Conidia. Bar = 10 µm.
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Fig. 3 Cercospora achyranthis on
Achyranthes asspera: 12. Lesions on host
leaves (1. upper surface, 2. lower surface). 3.
Caespituli. 4. Stroma. 5. Internal hyphae. 68.
Conidiophores. 912. Conidia. 13. Culture.
Bars 412 = 10 µm, 13 = 10 mm.
Fig. 4 Cercospora alocasiae on Alocasia
macrorrhiza from leaf spots: 1. Stroma with
attached conidiophores. 23. Conidiophores. 4
7. Conidia. Bar = 10 µm.
Fig. 5 Cercospora alocasiae on Alocasia
macrorrhiza from leaf spots: 12. Lesions on
host leaves (1. upper surface, 2. lower surface).
3. Stroma. 45. Stromata with attached
conidiophores. 610. Conidia. 11. Culture. Bars
310 = 10 µm, 11 = 10 mm.
×4.7 µm, n = 6), 519-septate, hyaline, thin
walled 0.250.3 µm wide, smooth, tip acute,
base truncate to obconically truncate, hila
thickened and darkened, wall 23 µm wide,
wall of the hila 0.5 µm thick.
Colonies on PDA after 3 weeks at 25°C
grey, 25 mm diam., spreading surface ridged
and smooth, mycelium brown, hyphae 29 µm
wide (
x
= 3.5 µm, n = 30), septate, constricted
at the septa, distance between septa 1037 µm
(
x
= 20.2 µm, n = 30), brown to hyaline, wall
0.30.8 µm wide (
x
= 0.6 µm, n = 30), smooth.
Conidia not formed in culture.
Hosts On a wide range of hosts of
many genera belonging to numerous unrelated
families.
Distribution worldwide.
Material examined: Vientiane Capital,
Xaythany District, Nong Viengkham Village,
fallow forest, on leaves of Byttneria
andamensis Kurz, fallow forest, 22 April 2006,
P. Phengsintham (P18); ibid., Xaythany
District, Houay Den Muang Village, fallow
forest, on leaves of B. andamensis, 12
September 2006, P. Phengsintham (P167).
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Notes This is the first record of a
cercosporoid hyphomycete on a host of the
genus Byttneria. This taxon is morphologically
indistinguishable from Cercospora apii s. lat.
(C. apii complex) as defined and circumscribed
by Crous & Braun (2003). Within this complex,
the morphology and cultures are not sufficient
to indicate if taxa on new hosts are different
species or new hosts for the species. Biological
data (inoculation experiments) and/or molecular
sequence analyses are necessary. The whole
taxonomy and biology within this complex is
complicated. Therefore, we follow the advice of
Crous & Braun (2003) to simply assign such
collections to C. apii s. lat.
Literature Chupp (1954: 568), Ellis
(1971: 276278), Crous & Braun (2003: 388).
Fig. 6 Cercospora apii on Byttneria
andamensis from leaf spots: 1. Stroma with
attached conidiophores. 25. Conidiophores.
69. Conidia. Bar = 10 µm. 69. Conidia. Bar = 10 µm.
(4) Cercospora artemisiae Y. L. Guo & Y.
Jiang, Mycosystema 19: 445, 2000. Figs 89.
Leaf spots on cladodes and branches
small oval to elliptic in shape, 0.52 mm
diam., pale grey to dingy grey-violet in the
centre, and with a fairly wide reddish brown
margin. Caespituli amphigenous, scattered,
dark brown. Mycelium internal; hyphae
branched, 34 µm wide (
x
= 3.5 µm, n = 7),
septate, constricted at the septa, distance betw-
Fig. 7 Cercospora apii on Byttneria
andamensis from leaf spots: 12. Lesions on
host leaves (1. upper surface, 2. lower surface).
3. Stroma. 47. Stromata with attached
conidiophores. 8. Internal mycelium. 913.
Conidia (12. Base of conidium). 14. Culture.
Bars 313 = 10 µm, 14 = 10 mm.
een septa 510 µm (
x
= 8.25 µm, n = 7),
brownish or green-hyaline, wall 0.50.8 µm
wide (
x
= 0.57 µm, n = 7), smooth, forming
plate-like plectenchymatous stromatic hyphal
aggregations. Stromata oval to ellipsoidal,
substomatal, 1530 µm diam. (
x
= 22.5 µm, n =
9), brown, composed of swollen hyphal cells,
subglobose, rounded and angular in outline, 48
µm wide (
x
= 6.2 µm, n = 9), brown to dark
brown, wall 0.50.8 µm wide (
x
= 0.57 µm, n =
9), smooth. Conidiophores solitary or
fasciculate, arising from stromata (311 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 34
85 × 45 µm (
x
= 63.8 × 4.25 µm, n = 13), 14-
septate, distance between septa 1028 µm (
x
=
16.4 µm, n = 30), medium brown, paler at the
apex, wall 0.50.8 µm wide (
x
= 0.57 µm, n =
30), smooth, 01-times geniculate, width
uniform; conidiogenous cells integrated,
terminal, cylindrical, 1528 × 34 µm (
x
= 20.3
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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× 3.67 µm, n = 9), pale brown; conidiogenous
loci conspicuous, subcircular, 0.72 µm wide
(
x
= 1.23 µm, n = 25), dark brown, wall 0.5
0.8 µm thick (
x
= 0.6 µm, n = 25). Conidia
solitary, acicular, straight to curved, 2549 × 2
4 µm (
x
= 37.55 × 3 µm, n = 9), 14-septate,
hyaline, thinwalled, smooth, tip subotuse to
acute, base truncate, hila thickened and
darkened, 0.72 µm wide (
x
= 1.56 µm, n = 9),
wall of the hila 0.250.3 µm (
x
= 0.28 µm, n =
9) thick.
Hosts Artemisia caudata Michx., A.
lactiflora Wall. ex DC. (Asteraceae).
Distribution Asia: China, Laos,
Thailand.
Material examined Phongsali
Province, Phongsali District, Phon Hin Village,
on leaves of Artemisia caudata, 24 June 2010,
P. Phengsintham (P597).
Notes This species belongs to the
Cercospora apii (s. lat.) complex (Crous &
Braun 2003).
Literature Crous & Braun (2003: 67).
Fig. 8 Cercospora artemisiae from
Artemisia caudata: 1. Stroma with attached
conidiophores. 23. Conidiophores. 46.
Conidia. Bar = 10 µm.
Fig. 9 Cercospora artemisiae from Artemisia
caudata: 1. Stroma with attached
conidiophores. 24. Conidiophores. 56.
Conidia. Bars = 10 µm.
(5) Cercospora asparagi Sacc., Michelia 1: 88,
1877. Figs 1011.
= Cercospora caulicola G. Winter. J.
Mycol. 1: 125, 1885.
= Cercosporina asparagicola Speg.,
Anal. Mus. Buenos Aires 20: 424, 1910.
Cercosporina asparagicola (Speg.)
Vassiljevsky, in Vassiljevsky & Karakulin,
Fungi imperfecti parasitici. 1. Hyphomycetes:
296, 1937.
Leaf spots on cladodes and branches,
small oval to elliptic in shape, 0.52 mm diam.,
pale tan to dingy grey in the centre, and with a
fairly wide reddish brown margin. Caespituli
amphigenous, scattered, dark brown. Mycelium
internal. Stromata well-developed, oval to
ellipsoidal, substomatal, up to 32 µm diam.,
brown, composed of swollen hyphal cells,
subglobose, rounded and angular in outline, 5
13 µm wide (
x
= 8.8 µm, n = 13),
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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brown to dark brown, wall 0.50.8 µm wide
(
x
= 0.6 µm, n = 13), smooth. Conidiophores
solitary or fasciculate, arising from stromata (2
15 per fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 28
63 × 46 µm (
x
= 43.5 × 4.56 µm, n = 10), 13-
septate, distance between septa 436 µm (
x
=
15 µm, n = 17), medium brown, paler at the
apex, wall 0.40.5 µm wide (
x
= 0.49 µm, n =
10), smooth, 01-times geniculate, width
uniform; conidiogenous cells integrated,
terminal, cylindrical, 1032 × 45 µm (
x
= 21.4
× 4.5 µm, n = 11), pale brown; conidiogenous
loci conspicuous, subcircular, 1.53 µm wide
(
x
= 2.5 µm, n = 25), dark brown, wall 0.30.5
µm thick (
x
= 0.4 µm, n = 25). Conidia solitary,
acicular, straight to curved, 54112 × 45 µm
(
x
= 80 × 4 µm, n = 5), 18-septate, hyaline,
thin-walled, smooth, tip subotuse to acute, base
truncate to obconically truncate, hila thickened
and darkened, 23 µm wide (
x
= 2.5 µm, n =
5), wall of the hila 0.30.5 µm (
x
= 0.4 µm, n =
5) thick.
Hosts Asparagus officinalis L., A.
plumosus (Baker) Oberm. (Asparagaceae).
Distribution: Africa: Ghana, Kenya,
Malawi, South Africa, Zimbabwe; Asia:
Brunei, Cambodia, China, Hong Kong, India,
Israel, Japan, Korea, Laos, Malysia, Nepal,
Pakistan, Taiwan, Thailand; Europe: Italy,
Ukraine, Serbia; North America and West
Indies: Cuba, USA (CA, FL, HI, IL, NC, NE).
Oceania: Solomon Islands; South America:
Argentina, Brazil, Colombia.
Material examined Vientiane Capital,
Xaythany District, Xay Village, garden, on
leaves of Asparagus officinalis, 30 June 2006,
P. Phengsintham (P57).
Notes Crous & Braun (2003)
considered Cercospora asparagi close to or
identical with C. apii s. lat. In the Laos
collection conidiophores were fasciculate, 28
63 × 46 µm and conidia are 54112 × 45 µm,
which is similar to those reported by Ellis
(1976) [conidiophores 40150 × 38 µm and
conidia 80130 × 45 µm], Hsieh & Goh
(1990) [conidiophores 30170 × 47 µm and
conidia 35130 × 2.55 µm] and Chupp (1954).
Literature Saccado (1886: 477),
Chupp (1954: 343), Ellis (1976: 270), Hieh &
Goh (1990: 208), Crous & Braun (2003: 68).
Fig. 10 Cercospora asparagi from Asparagus
officinalis: 1. Stroma with attached
conidiophores. 23. Conidiophores. 45.
Conidia. Bar = 10 µm.
Fig. 11 Cercospora asparagi from Asparagus
officinalis: 12. Stroma with attached
conidiophores. 3. Conidium. Bars = 10 µm.
(6) Cercospora begoniae Hori, Lecture on plant
diseases (Shokubutsu Bybai Kowa) 2: 181,
1916. Figs 1213.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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(= Cercospora apii s. lat.)
Leaf spots small to fairly large,
suborbicular to irregular, 14 mm in diam.,
grey-brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered, dark
brown. Mycelium internal, inconspicuous.
Stromata developed, small to medium-sized,
globular to subglobular, substomatal and
intraepidermal, 1015 µm in diam. (
x
= 12.5
µm, n = 5), dark brown to black in mass,
composed of swollen hyphal cells, subglobose,
rounded to angular in outline, 58 µm wide (
x
= 6.7 µm, n = 11), brown to dark brown, wall
0.50.8 µm wide (
x
= 0.7 µm, n = 11), smooth.
Conidiophores fasciculate, arising from
stromata (23 per fascicle), emerging through
stomata, unbranched, straight to curved,
cylindrical, 5593 × 45 µm (
x
= 65.3 × 4.4
µm, n = 11), 24-septate, distance between
septa 936 µm (
x
= 18 µm, n = 30), medium
brown, paler at the apex, wall 0.50.8 µm wide
(
x
= 0.59 µm, n = 30), smooth, 03-times
geniculate. Conidiogenous cells terminal,
cylindrical, 1736 × 3.54 µm (
x
= 28.3 × 3.83
µm, n = 7), pale brown; conidiogenous loci
conspicuous, subcircular, 23 µm wide (
x
=
2.6 µm, n = 7), wall 0.50.8 µm thick (
x
= 0.62
µm, n = 7), thickened and darkened. Conidia
solitary, acicular to obclavate, straight to
curved, 57150 × 23 µm (
x
= 103.5 × 2.5 µm,
n = 8), 712-septate, hyaline to subhyaline,
thin-walled 0.30.5 µm (
x
= 0.35 µm, n = 8),
smooth, tip acute, base truncate to obconically
truncate; hila thickened and darkened 1.52 µm
wide (
x
= 1.75 µm, n = 8), wall of the hila 0.3
0.5 µm (
x
= 0.37 µm, n = 8) thick.
Hosts Begonia argenteo-guttata M.
Lemoine, B. evansiana C. Andrews, B. inflata
Clarke, B. palmata D. Don, B. rex Putz., B. rex-
culturum hybrid, B. semperflorens Link & Otto,
Begonia sp. (Begoniaceae).
Distribution Africa: Zimbabwe; Asia:
Brunei, China, India, Japan, Laos, Malaysia,
Taiwan, Thailand; Europe: Poland; North
America and West Indies: USA (FL).
Material examined Xiangkhouang
Province, Paek District, Phonsavane Village, on
leaves of Begonia inflata, 3 January 2010, P.
Phengsintham (P517).
Notes The collection from Laos agrees
with the description of Cercospora begoniae by
Chupp (1954) and Hsieh & Goh (1990)
[conidiophores 20200 × 35 µm and conidia
50300 × 23.5 µm].
Literature Chupp (1954: 79), Katsuki
(1965: 14), Hsieh & Goh (1990: 42), Crous &
Braun (2003: 78).
Fig. 12 Cercospora begoniae on Begonia
inflata from leaf spots: 1. Stroma with
attached conidiophores. 24. Conidiophores.
5. Conidium. Bar = 10 µm.
(7) Cercospora bidentis Tharp, Mycologia 9:
108, 1917. Figs 1415.
= Cercospora bidentis Marchal &
Stayaert, Bull. Soc. Roy. Bot. Belgiques 61:
167, 1954.
= Cercospora bidentis-pilosae
Sawada, Rep. Gov. Agric. Res. Inst. Taiwan
85: 98, 1943, nom. inval.
Leaf spots orbicular to irregular, 210
mm diam., dark brown to black in the centre,
and with brown to dark brown margin.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 13 Cercospora begoniae on Begonia
inflata from leaf spots: 12. Lesions on host
leaves (1. upper surface, 2. lower surface). 3.
Caespituli. 4. Stroma with attached
conidiophores. 57. Conidiophores. 8.
Conidium. Bars = 10 µm.
Caespituli amphigenous, scattered,
brown to dark brown. Mycelium internal;
hyphae branched, 35 µm wide (
x
= 3.69 µm,
n = 13), septate, constricted at the septa,
distance between septa 614 µm (
x
= 10.8 µm,
n = 13), brownish or green-hyaline, wall 0.3
0.5 µm wide (
x
= 0.46 µm, n = 13), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata oval to
ellipsoidal, substomatal, 1020 µm diam. (
x
=
16.5 µm, n = 15), brown, composed of swollen
hyphal cells, subglobose, rounded and angular
in outline, 511 µm wide (
x
= 7.7 µm, n = 23),
brown to dark brown, wall 0.51 µm wide (
x
=
0.88 µm, n = 23), smooth. Conidiophores
fasciculate, arising from stromata (12 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 25
117 × 47 µm (
x
= 75 × 4.95 µm, n = 22), 05-
septate, distance between septa 835 µm (
x
=
19.9 µm, n = 30), medium brown, paler at the
apex, wall 0.51 µm wide (
x
= 0.7 µm, n =
30), smooth, 02-times geniculate, width
uniform. Conidiogenous cells integrated,
terminal, cylindrical, 735 × 35 µm (
x
= 25.4
× 4.27 µm, n = 11), pale brown; conidiogenous
loci conspicuous, subcircular, 23 µm wide (
x
= 2.4 µm, n = 14), dark brown, wall 0.50.8 µm
thick (
x
= 0.53 µm, n = 11). Conidia solitary,
acicular, straight to curved, 3162 × 23 µm (
x
= 43.8 × 2.2 µm, n = 7), 26-septate, hyaline,
thin-walled, smooth, tip acute, base truncate to
obconically truncate, hila thickened and
darkened, 0.82 µm wide (
x
= 1.18 µm, n = 7),
wall of the hila 0.30.5 µm (
x
= 0.35 µm, n =
7) thick.
Hosts Bidens bipinnata L., B.
biternata (Lour.) Merr. & Sherff, B. cernua L.,
B. coronata (L.) Fisch. ex Steud., B. laevis (L.)
Britton, Sterns & Poggenb., B. nashii Small, B.
pilosa L., Bidens spp., Centaurea americana
Nutt., Chrysanthemum hortorum Bailey,
Coreopsis drummondii Torr. & A. Grey, C.
lanceolata L., Coreopsis spp., Conyza sp.,
Cosmos bipinnatus Cav., Erigeron floribundus
(Kunth) Sch. Bip., Helianthus annuus L., H.
tuberosus L., Helichrysum brassii Brenan,
Pseudelephantopus spicatus (Juss. ex Aubl.)
Rohr, Rudbeckia laciniata L., Senecio cruentus
(Masson ex L'Hér.) DC., Solidago spp..
Tithonia speciosa (Hook.) Hook. ex Griseb.,
Tridax procumbens L., Vernonia glabra
(Steetz) Vatke (Asteraceae).
Distribution Widespread in tropical
and subtropical countries. Africa: Congo,
Ghana, Kenya, Malawi, Mauritius, Nigeria,
South Africa, Sudan, Tanzania, Zimbabwe;
Asia: China, India, Indonesia, Japan, Laos,
Malaysia, Myanmar, Nepal, Taiwan, Thailand;
North America and West Indies: Cuba,
Trinidad and Tobago Panama, USA (FL, TX,
WI); Oceania: Papua New Guinea, Solomon
Islands, Tonga, American Samoa; South
America: Brazil, Venezuela.
Material examined Luangprabang
Province, Phoukhoun District, Phadeng Village,
fallow forest, on leaves of Bidens bipinnata, 18
June 2006, P. Phengsintham (P102).
Notes The collection from Laos is
characterized by forming conidiophores singly
or only three in a small fascicle, which differs
from other samples on Bidens pilosa with 320
conidiophores per fascicle (e.g. Hsieh & Goh
1990).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Literature Saccado (1931: 871; 1972:
1369), Chupp (1954: 123124), Katsuki
(1965: 20), Vasudeva (1963: 50), Ellis (1976:
250), Hsieh & Goh (1990: 62).
Fig. 14 Cercospora bidentis on Bidens
pilosa: 13. Conidiophores. 46. Conidia.
Bar = 10 µm.
(8) Cercospora brassicicola Henn., Bot. Jahrb.
Syst. 37: 166, 1905. Figs 1617.
= Cercospora brassicae-campestris
Rangel, Arq. Mus. Nac., Rio de Janeiro 18: 16,
1917.
Cercosporina brassicae-campestris
(Rangel) Sacc., Syll. Fung. 25: 899, 1931.
= Cercospora brassicae-junceae
Sawada (Brassicae-yunceae), Special Publ.
Coll. Agric. Natl. Taiwan Univ. 8: 212, 1959
(nom. nud.).
= Cercospora bloxami auct. sensu E.
Young, Mycologia 8: 43, 1916.
Leaf spot circular to angular or a long
the margin of the leaves, 125 mm diam., pale
green or pale brown to dark brown or black in
the center, and with pale green or yellowish
margin. Caespituli amphigenous, dense, grey.
Fig. 15 Cercospora bidentis on Bidens pilosa
from leaf spots: 1. Lesions on host leaves (1.
upper surface, 2. lower surface). 3. Internal
mycelium. 45. Stromata with attached
conidiophores. 610. Conidia. Bars 1 = 10 mm,
310 = 10 µm.
Mycelium internal; hyphae branched, 14 µm
wide (
x
= 3.1 µm, n = 30), septate, constricted
at the septa, distance between septa 515 µm
(
x
= 8.17 µm, n = 30), subhyaline or
olivaceous brown, wall 0.50.9 µm wide (
x
=
0.61 µm, n = 23), smooth. Stromata
substomatal, intraepidermal, oval, ellipsoidal,
1530 µm diam. (
x
= 20.86 µm, n = 8), dark
brown, stromatal cells oval, angular, obclavate,
39 µm diam. (
x
= 6.47 µm, n = 30), dark
brown, wall 0.51 µm wide (
x
= 0.7 µm, n =
30). Conidiophores fasciculate, arising from
stromata (220 per fascicle), emerging through
stomata, cylindrical, 15232 × 46 µm (
x
=
109.4 × 5 µm, n = 30), 18-septate, distance
between septa 958 µm (
x
= 25 µm, n = 30),
pale olivaceous to medium brown, oldest ones
uniform in colour and width, wall 0.51 µm
wide (
x
= 0.8 µm, n = 30), smooth, 12 times
geniculate; conidiogenous cells terminal, 1368
× 46 µm (
x
= 33.27 × 4.7 µm, n = 30);
conidiogenous loci conspicuous, subcircular in
outline, planate, 24 µm wide (
x
= 2.83 µm, n
= 30), thickened, darkened. Conidia solitary,
acicular, curved or undulate, 30288 × 1.55
µm (
x
= 120 × 3.52 µm, n = 30), 320-septate,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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hyaline, wall 0.250.5 µm wide (
x
= 0.27 µm,
n = 30), smooth, tip acute, base truncate to
obconically truncate, hila 14 µm wide (
x
=
2.47 µm, n = 30), wall of the hila 0.250.5 µm
thick (
x
= 0.27 µm, n = 30), thickened and
darkened.
Hosts Brassica alba (L.) Rabenh., B.
alboglabra L.H. Bailey, B. campestris L., B.
chinensis L., B. integrifolia (H. West) Rupr., B.
juncea (L.) Coss., B. kaber (DC.) L.C. Wheeler,
B. napus L., B. nigra (L.) W.D.J. Koch, B.
oleracea L., B. pekinensis (Lour.) Rupr., B.
rapa L., Brassica sp., Matthiola incana (L.)
W.T. Aiton, Raphanus sativus L.
(Brassicaceae).
Distribution Africa: Angola, Kenya,
Malawi, Mauritius, Nigeria, Sierra Leone,
Somalia, South Africa, Sudan, Tanzania, Togo,
Uganda; Asia: China, India, Indonesia, Japan,
Kazakhstan, Korea, Laos, Malaysia, Myanmar,
Philippines, Sri Lanka, Taiwan, Thailand;
Europe: Armenia, Belarus, Estonia, Great
Britain, Latvia, Lithuania, Russia, Ukraine;
North America and West Indies: Cuba,
Dominican Republic, Jamaica, Puerto Rico,
Trinidad and Tobago, USA (AL, CA, DE, FL,
GA, HI, IN, LA, MS, NC, NH, NJ, OK, TX,
VA); Australia; Oceania: Niue, Papua New
Guinea, Solomon Islands; South America:
Brazil, Colombia, Peru.
Material examined Vientiane Capital,
Xaythany District, Xay Village, garden, on
leaves of Brassica integrifolia, 21 April 2006,
P. Phengsintham (P14); ibid., 9 June 2007, P.
Phengsintham (P281).
Notes The collections from Laos have
conidiophores up to 232 µm long, which is
shorter than the conidiophores of Cercospora
brassicicola described by Chupp (1954), which
are up to 500 µm. However, the length of
conidiophores in Cercospora spp. is often
extremely variable and depends on external
ecological conditions (Crous & Braun 2003).
Literature Saccado (1913: 1413), Chupp
(1954: 180), Ellis (1971: 255), Crous & Braun
(2003: 88), To-anun et al. (2011: 51).
(9) Cercospora cannabis Hara & Fukui, Dis.
Cult. Plant, 2nd ed.: 594, 1925. Figs 1819.
= Cercosporina cannabis Hara,
Pathology of crop plants: 195, 1928.
Cercospora cannabis (Hara) Chupp,
Trans. Wisconsin Acad. Sci. 36: 262, 1946.
= Cercospora hosodae Fukui (hosodai),
J. Plant Protect. 12: 448, 1925.
Fig. 16 Cercospora brassicicola from
Brassica integrifolia: 12. Stromata with
attached conidiophores. 3. Conidiophore. 4.
Stromata with attached young conidiophores.
58. Conidia. Bar = 10 µm.
Fig. 17 Cercospora brassicicola from
Brassica integrifolia: 1. Caespituli. 23.
Stromata with attached conidiophores. 4.
Conidiophore. 58. Conidia. Bars = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Leaf spots circular to angular or a long
the margin of the leaves, 115 mm diam., pale
green or pale brown to dark brown or black in
the center, and with pale green or yellowish
margin. Caespituli amphigenous, dense, grey.
Mycelium internal; hyphae branched, 23 µm
wide (
x
= 2.66 µm, n = 10), septate, constricted
at the septa, distance between septa 510 µm
(
x
= 7.33 µm, n = 10), subhyaline or
olivaceous brown, wall 0.30.5 µm wide (
x
=
0.36 µm, n = 10), smooth. Stromata
substomatal, intraepidermal, oval, ellipsoidal,
1222 µm diam. (
x
= 20.5 µm, n = 5), dark
brown, stromatal cells oval, angular, obclavate,
46 µm diam. (
x
= 5.2 µm, n = 7), dark brown,
wall 0.50.8 µm wide (
x
= 0.62 µm, n = 7).
Conidiophores solitary or fasciculate, arising
from stromata (24 per fascicle), emerging
through stomata, cylindrical, 12105 × 35 µm
(
x
= 50.6 × 4 µm, n = 9), 07-septate, distance
between septa 822 µm (
x
= 14.8 µm, n = 12),
pale olivaceous to medium brown, oldest ones
uniform in colour and width, wall 0.50.8 µm
wide (
x
= 0.6 µm, n = 12), smooth, 12 times
geniculate; conidiogenous cells terminal, 1222
× 46 µm (
x
= 16.22 × 4.7 µm, n = 6);
conidiogenous loci conspicuous, subcircular in
outline, planate, 23.5 µm wide (
x
= 3.63 µm,
n = 6), thickened, darkened. Conidia solitary,
acicular, curved or undulate, 83125 × 2.53
µm (
x
= 106.33 × 2.8 µm, n = 7), 69-septate,
hyaline, wall 0.250.3 µm wide (
x
= 0.28 µm,
n = 7), smooth, tip acute to subacute, base
truncate to obconically truncate, hila 1.52.5
µm wide (
x
= 2 µm, n = 7), wall of the hila
0.250.3 µm thick (
x
= 0.27 µm, n = 7),
thickened and darkened.
Hosts Cannabis sativa L., Humulus
lupulus L. (Cannabaceae).
Distribution Asia: China, India, Japan,
Nepal, Laos; North America and West Indies:
USA (MO, WI); South America: Colombia.
Material examined Khammoune
Province, Nakai District, Nahao Village,
garden, on leaves of Cannabis sativa, 20 July
2011, P. Phengsintham (P646).
Notes The collection from Laos has
conidiophores up to 125 µm long, which is
longer than the conidiophores of Cercospora
cannabis described by Chupp (1954)
[conidiophores 10100 × 3.55.5 µm and
conidia 2090 × 24 µm].
Literature Chupp (1954: 394),
Vasudeva (1963: 64), Katsuki (1965: 47).
Fig. 18 Cercospora cannabis on
Cannabis sativa: 1. Stroma with attached
conidiophores. 23. Conidiophores. 4.
Stroma with attached conidiophores 56.
Conidia. Bar = 10 µm.
Fig. 19 Cercospora cannabis on Cannabis
sativa: 13. Stroma with attached
conidiophores. 45. Conidiophores. 6. Conidia.
Bars = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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(10) Cercospora capsicigena Bhartiya, R,
Dubey & S.K. Singh, Indian Phytopathol. 5:
149, 2000. Figs 2021.
(= Cercospora apii s. lat.)
Leaf spots suborbicular to irregular, 25
mm in diam., grey-brown in the centre, and
with dark brown margin. Caespituli
amphigenous, scattered, whitish or grey.
Mycelium internal; hyphae branched, 23 µm
wide (
x
= 2.25 µm, n = 9), septate, constricted
at the septa, distance between septa 49 µm (
x
= 7 µm, n = 9), brownish or green-hyaline, wall
0.30.5 µm wide (
x
= 0.45 µm, n = 9), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata developed, small
to medium-sized, globular to subglobular,
substomatal and intraepidermal, 1830 µm in
diam. (
x
= 24 µm, n = 4), dark brown to black
in mass, composed of swollen hyphal cells,
subglobose, rounded to angular in outline, 47
µm wide (
x
= 6 µm, n = 30), brown to dark
brown, wall 0.50.8 µm wide (
x
= 0.54 µm, n
= 30), smooth. Conidiophores solitary or
fasciculate, arising from stromata (27 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 21
63 × 46 µm (
x
= 39.8 × 5 µm, n = 15), 13-
septate, not geniculate, distance between septa
534 µm (
x
= 14.4 µm, n = 30), medium
brown, paler at the apex, wall 0.50.8 µm wide
(
x
= 0.6 µm, n = 30), smooth. Conidiogenous
cells terminal, cylindrical, 1334 × 45 µm (
x
= 21.3 × 4.14 µm, n = 7), pale brown;
conidiogenous loci conspicuous, subcircular,
1.53 µm wide (
x
= 2.07 µm, n = 5), wall 0.5
0.8 µm thick (
x
= 0.7 µm, n = 5), thickened
and darkened. Conidia solitary, acicular to
obclavate, straight to curved, 4970 × 34 µm
(
x
= 54.75 × 3.25 µm, n = 11), 45-septate,
hyaline to subhyaline, thin-walled 0.30.5 µm
(
x
= 0.35 µm, n = 11), smooth, tip acute, base
truncate to obconically truncate; hila thickened
and darkened, 1.53 µm wide (
x
= 2.12 µm, n
= 11), wall of the hila 0.30.5 µm (
x
= 0.35
µm, n = 11) thick.
Colonies on PDA after 3 weeks at 25°C
with grey-brown mycelium, reaching 68 mm
diam. Hosts Capsicum annuum L.
(Solanaceae).
Distribution Asia: India, Laos,
Thailand.
Material examined Bolikhamsay
Province, Lak 20 District, Nongsong Village,
garden, on leaves of Capsicum annuum, 17 July
2008, P. Phengsintham (P325); Oudomxay
Province, Houn District, C. annuum, 6 October
2008, P. Phengsintham (P380). GenBank
accession no (ITS, KC677884; LSU,
KC677918).
Notes The collections from Laos are
close to C. apii complex (Crous & Braun,
2003). Literature Crous & Braun (2003: 103).
Fig. 20 Cercospora capsicigena on Capsicum
annuum from leaf spots: 1. Stroma with attached
conidiophores. 23. Conidiophores. 47.
Conidia. Bar = 10 µm.
(11) Cercospora cocciniae Munjal, Lall &
Chona, Indian Phytopathol. 12: 86, 1959. Figs
2223. Leaf spots oval to elliptic in shape, 16
mm diam. (
x
= 4 µm, n = 11), white-grey in the
centre, and with a white-greyish margin.
Caespituli amphigenous, scattered, dark brown.
Mycelium internal, inconspicuous. Stromata
oval to ellipsoidal, substomatal, 1535 µm diam.
(
x
= 24.1 µm, n = 18), brown, composed of
swollen hyphal cells, subglobose, angular in out-
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
58
Fig. 21 Cercospora capsicigena on Capsicum
annuum from leaf spots: 12. Lesions on host
leaf (1. upper surface. 2. lower surface). 3.
Caespituli. 4. Stroma with attached
conidiophores. 56. Conidiophores. 710.
Conidia. 11. Culture. Bars 12 = 10 mm, 410
= 10 µm.
line, 37 µm wide (
x
= 5.1 µm, n = 30), brown
to dark brown, wall 0.51 µm wide (
x
= 0.79
µm, n = 25), smooth. Conidiophores solitary or
fasciculate, arising from stromata (217 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 7
92 × 47 µm (
x
= 32 × 5 µm, n = 26), 04-
septate, distance between septa 735 µm (
x
=
16.28 µm, n = 21), medium brown, paler at the
apex, wall 0.81 µm wide (
x
= 0.82 µm, n =
26), smooth, 01-times geniculate, width
uniform. Conidiogenous cells integrated,
terminal, cylindrical, 1024 × 35 µm (
x
= 17
× 4.21 µm, n = 17), pale brown; conidiogenous
loci conspicuous, subcircular, 1.53 µm wide
(
x
= 2.45 µm, n = 30), dark brown, wall 0.81
µm thick (
x
= 0.84 µm, n = 30). Conidia
solitary, acicular, straight to curved, 24180 ×
37 µm (
x
= 53.61 × 3.92 µm, n = 26), 313-
septate, hyaline, thin-walled, smooth, tip
subotuse to acute, base truncate to obconically
truncate, hila thickened and darkened, 1.53 µm
wide (
x
= 2.21 µm, n = 19), wall of the hila
0.51 µm (
x
= 0.81 µm, n = 19) thick.
Hosts Coccinia indica Wight & Arn.,
Momordica charantia L. (Cucurbitaceae).
Distribution Asia: Brunei, India, Laos,
Pakistan, Thailand.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Coccinia indica, Xay Village, 28 June 2006, P.
Phengsintham (P106); ibid., on leaves of C.
indica, 28 December 2008, P. Phengsintham
(P392).
Notes Crous & Braun (2003)
classified this species as morphologically
distinct from C. apii s. str. by having obclavate
conidia. The Laos collections have distinctly
obclavate conidia, with long obconically
truncate bases. The conidiophores and conidia
are similar to those reported from Brunei
(Braun & Sivapalan 1999).
Literature Chupp (1954: 65), Hsieh &
Goh (1990: 98), Braun & Sivapalan (1999),
Crous & Braun (2003: 129).
Fig. 22 Cercospora cocciniae on Coccinia
indica: 1. Stroma with attached conidiophores.
24. Conidiophores. 58. Conidia. Bars = 10
µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 23 Cercospora cocciniae on Coccinia
indica from leaf spots: 12. Lesions on host
leaves (1. upper surface, 2. lower surface). 3.
Stromata with Conidiophore. 45.
Conidiophores. 68. Conidia. 9. Based of
conidia. Bars 12 = 10 mm, 39 = 10 µm.
(12) Cercospora duranticola sp. nov.
Figs 2425.
MycoBank, MB 801726.
Diagnosis Differs from the
Cercospora apii s. lat. complex in having
uniformly short conidiophores arising from
well-developed stromata and acicular to
narrowly obclavate conidia with truncate to
distinctly obconically truncate base.
Leaf spots circular or angular, 14 mm
diam., grayish brown to brown in the centre,
and with brown to dark brown margin.
Caespituli amphigenous, scattered, yellow to
brown. Mycelium internal; hyphae branched, 2
4 µm wide (
x
= 3 µm, n = 6), septate,
constricted at the septa, distance between septa
510 µm (
x
= 7.1 µm, n = 6), brownish or
green-hyaline, wall 0.30.5 µm wide (
x
= 0.36
µm, n = 6), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata well-developed, oval to
ellipsoidal, substomatal, 1752 µm diam. (
x
=
30.3 µm, n = 8), brown, composed of swollen
hyphal cells, subglobose, rounded and angular
in outline, 510 µm wide (
x
= 6.6 µm, n = 27),
brown to dark brown, wall 0.51 µm wide (
x
=
0.67 µm, n = 27), smooth. Conidiophores
fasciculate, arising from stromata (111 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical to
distinctly geniculate, uniformly short, 1735 ×
45 µm (
x
= 23.1 × 4.6 µm, n = 11), 02-
septate, distance between septa 525 µm (
x
=
15.9 µm, n = 14), medium brown, paler at the
apex, wall 0.30.5 µm wide (
x
= 0.47 µm, n =
14), smooth, 02-times geniculate, pale and
more narrow towards the tip. Conidiogenous
cells integrated, terminal, cylindrical, 825 × 3
5 µm (
x
= 17.3 × 4.28 µm, n = 9), pale brown;
conidiogenous loci conspicuous, subcircular, 1
3 µm wide (
x
= 1.73 µm, n = 26), dark brown,
wall 0.30.8 µm thick (
x
= 0.31 µm, n = 26).
Conidia solitary, acicular to narrowly obclavate,
straight to curved, 24144 × 24 µm (
x
= 52 ×
3.35 µm, n = 10), 313-septate, hyaline, thin-
walled, smooth, tip acute, base truncate to
obconically truncate, hila thickened and
darkened, 0.52 µm wide (
x
= 1.64 µm, n =
10), wall of the hila 0.30.5 µm (
x
= 0.32 µm,
n = 10) thick.
Hosts Duranta repens L.
(Verbenaceae).
Distribution Asia: Laos.
Material examined Xiengkhouang
Province, Phonsavanh District, Phonsavanh
Village, urban area, on leaves of Duranta
repens, 3 January 2010, P. Phengsintham
(P515, MFLU12-2197, holotype). GenBank
accession no (ITS, KC677885).
Notes Cercospora durantae Chupp &
A.S. Mull. is an invalid name. The type material
was re-examined and the conidiogenous loci
and hila at the base of conidia found to be
unthickened and not darkened; the species was
validated as Pseudocercospora durantae Pons,
U. Braun & Crous (in Crous & Braun 2003).
The collection from Laos is quite distinct and
represents a true Cercospora s. str. different
from C. apii s. lat. (sensu Crous & Braun 2003)
by having uniformly short conidiophores
arising from well-developed stromata and
acicular to narrowly obclavate conidia with
truncate to distinctly obconically truncate base.
Cercospora on Duranta in Laos warrants to be
considered a separate species.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 24 Cercospora duranticola on Duranta
repens: 12. Stroma with attached
conidiophores. 3. Conidiophore. 410.
Conidia. Bar = 10 µm.
Fig. 25 Cercospora duranticola on Duranta
repens from leaf spots: 1. Lesions on host
leaves (1. upper surface, 2. lower surface). 3.
Stroma with attached conidiophores. 47.
Conidia. Bars 1 = 10 mm, 37 = 10 µm.
(13) Cercospora erechtitis G.F. Atk., J. Elisha
Mitchell Sci. Soc. 8: 66, 1892. Figs 2627.
= Cercospora erechtiticola Sawada,
nom. nud. (Chupp 1954: 134).
Leaf spots circular or suborbicular, 112
mm diam., greyish brown to dark brown in the
centre, and brown to dark brown margin.
Caespituli amphigenous, scattered, dark brown.
Mycelium internal; hyphae branched, 24 µm
wide (
x
= 3 µm, n = 30), septate, constricted at
the septa, distance between septa 513 µm (
x
=
9.37 µm, n = 30), brownish or green-hyaline,
wall 0.30.5 µm wide (
x
= 0.37 µm, n = 30),
smooth, forming plate-like plectenchymatous
stromatic hyphal aggregations. Stromata well
developed, oval to ellipsoidal, substomatal, 15
30 µm diam. (
x
= 20 µm, n = 4), brown,
composed of swollen hyphal cells, subglobose,
rounded and angular in outline, 514 µm wide
(
x
= 9.23 µm, n = 30), brown to dark brown,
wall 0.81 µm wide (
x
= 0.89 µm, n = 30),
smooth. Conidiophores solitary or fasciculate,
arising from stromata (25 per fascicle),
emerging through stomata, unbranched, straight
to curved, cylindrical, 435 × 58 µm (
x
=
24.1 × 5.68 µm, n = 19), 01-septate, distance
between septa 722 µm (
x
= 15.2 µm, n = 19),
medium brown, paler at the apex, wall 0.51
µm wide (
x
= 0.65 µm, n = 19), smooth, 01-
times geniculate, width uniform. Conidiogenous
cells integrated, terminal, cylindrical, 1225 ×
56 µm (
x
= 19.1 × 5.5 µm, n = 14), pale
brown; conidiogenous loci conspicuous,
subcircular, 1.53 µm wide (
x
= 2.11 µm, n =
19), dark brown, wall 0.50.8 µm thick (
x
=
0.6 µm, n = 19). Conidia solitary, acicular,
straight to curved, 2883 × 23 µm (
x
= 62 ×
2.67 µm, n = 5), 37-septate, hyaline, thin-
walled, smooth, tip acute, base truncate to
obconically truncate, hila thickened and
darkened, 2 µm wide (
x
= 2 µm, n = 5), wall of
the hila 0.30.5 µm (
x
= 0.37 µm, n = 5) thick.
Hosts Erechtites hieraciifolius (L.)
Raf. ex DC., E. valerianifolius (Link ex
Spreng.) DC., Hieracium aurantiacum L.,
Ligularia sp. (Asteraceae).
Distribution Asia: Laos, Taiwan.
South America: Colombia.
Material examined Vientiane Capital,
Xaythany District, Xay Village, garden, on
leaves of Erechtites valerianifolius, 8 May
2006, P. Phengsintham (P35).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
61
Notes Morphologically Cercospora
erechtitis is indistinguishable from C. apii s. lat.
(Crous & Braun 2003). However, inoculation
results (biological specialization) and molecular
sequence analyses are not available, and hence,
the taxonomic status of this species remains
unclear. The conidiophores and conidia of the
Cercospora from Laos (conidiophores 435 ×
58 µm, conidia 2883 × 23 µm) are shorter
than C. erechtitis described in Hsieh & Goh
(1990) [conidiophores 30300 × 46 µm and
conidia 40120 × 24.5 µm]. The length of
conidiophores and conidia in Cercospora
species is, however, often variable, depending
on age and external conditions (Crous & Braun
2003).
Literature Chupp (1954: 134), Hsieh
& Goh (1990: 65), Crous & Braun (2003: 35).
Fig. 26 Cercospora erechtitis from
Erechtites valerianifolius: 1. Stroma with
attached conidiophores. 2. Stromatal cells
with attached conidiophore. 36. Conidia.
Bar = 10 µm.
Fig. 27 Cercospora erechtitis on Erechtites
valerianifolius: 1. Lesions on host leaf (upper
surface). 2. Internal hyphae. 35. Stromata with
attached conidiophores. 6. Stromatal cells with
attached conidiophore. 7. Conidium. 8. Hilum
of conidium. Bars 1 = 10 mm, 28 = 10 µm.
(14) Cercospora hyptidicola R.K.Srivast., N.
Srivast. & A.K. Srivast., Proc. Natl. Acad. Sci.
India, Section B, Biol. Sci., 64: 111, 1994. Figs
2829.
(= Cercospora apii s. lat.)
Leaf spots indistinct to large rusty
brown blotches, 18 mm diam., reddish brown
to grey-brown in the centre, with yellowish to
pale brown margin. Caespituli amphigenous,
scattered, dark brown. Mycelium internal;
hyphae branched, 24 µm wide (
x
= 3.7 µm, n
= 6), septate, constricted at the septa, distance
between septa 514 µm (
x
= 8.17 µm, n = 6),
brownish or green-hyaline, wall 0.250.3 µm
wide (
x
= 0.29 µm, n = 6), smooth, forming
plate like plectenchymatous stromatic hyphal
aggregations. Stromata oval to ellipsoidal,
substomatal, 1324 µm diam. (
x
= 17.5 µm, n
= 4), brown, composed of swollen hyphal cells,
subglobose, rounded and angular in outline, 5
10 µm wide (
x
= 6.21 µm, n = 14), brown to
dark brown, wall 0.81 µm wide (
x
= 0.87 µm,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
62
n = 14), smooth. Conidiophores fasciculate,
arising from stromata (17 per fascicle),
emerging through stomata, unbranched, straight
to curved, cylindrical, 30120 × 46 µm (
x
=
63.3 × 5.33 µm, n = 12), 15-septate, distance
between septa 924 µm (
x
= 15.4 µm, n = 30),
medium brown, paler at the apex, wall 0.81
µm wide (
x
= 0.91 µm, n = 12), smooth, 03-
times geniculate, width uniform; conidiogenous
cells integrated, terminal, cylindrical, 530 × 3
6 µm (
x
= 18 × 4.4 µm, n = 12), pale brown;
conidiogenous loci conspicuous, subcircular,
1.53 µm wide (
x
= 2.1 µm, n = 14), dark
brown, wall 0.50.8 µm thick (
x
= 0.78 µm, n
= 14). Conidia solitary, acicular, straight to
curved, 22170 × 13 µm (
x
= 68.1 × 2.35 µm,
n = 20), 220-septate, hyaline, thin-walled,
smooth, tip acute, base truncate to obconically
truncate, hila thickened and darkened, 12 µm
wide (
x
= 1.7 µm, n = 23), wall of the hila 0.5
1 µm (
x
= 0.67 µm, n = 23) thick.
Colonies on PDA after 3 weeks at 25°C,
grey, 15 mm diam., spreading surface ridged
and smooth, hyphae brown, 28 µm wide (
x
=
5.27 µm, n = 30), septate, constricted at the
septa, distance between septa 425 µm (
x
=
14.37 µm, n = 30), hyaline, wall 0.81 µm thick
(
x
= 0.87 µm, n = 30), smooth. Conidia not
formed in culture.
Hosts Hyptis suaveolens (L.) Poit.
(Lamiaceae).
Distribution Asia: India, Laos.
Material examined Vientiane Capital,
Xaythany District, Nong Viengkham Village,
rice paddy, on leaves of Hyptis suaveolens, 26
April 2006, P. Phengsintham (P22).
Notes The collection from Laos agrees
with Cercospora hyptidicola, described from
India on Hyptis suaveolens. Cercospora
hyptidicola Chupp & A.S. Mull. (nom. inval.) is
a synonym of Pseudocercospora lycopodis
(Ellis & Everh.) Deighton (Crous & Braun
2003). Literature Chupp (1954: 268), Crous
& Braun (2003: 223).
(15) Cercospora ipomoeae G. Winter,
Hedwigia 26: 34, 1887. Figs 3031.
= Cercospora stuckertiana Syd & P.
Syd., Mem. Herb. Boissier 8(4): 2, 1900.
= Cercospora dichondrae Katsuki, Ann.
Phytopathol. Soc. Japan 20: 72, 1955.
Fig. 28 Cercospora hyptidicola from
Hyptis suaveolens: 12. Conidiophores. 3.
Stroma with attached conidiophore. 47.
Conidia. Bars = 10 µm.
Fig. 29 Cercospora hyptidicola on Hyptis
suaveolens: 12. Lesions on host leaves (1.
upper surface, 2. lower surface). 3. Stroma. 46.
Conidiophores. 7. Internal mycelium. 812.
Conidia (12. Base of conidia). 13. Culture. Bars
12, 13 = 10 mm, 312 = 10 µm.
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Leaf spots small to fairly large,
suborbicular to irregular, 0.53 mm in diam.,
grey-brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered, dark
brown. Mycelium internal; hyphae branched, 1
4 µm wide (
x
= 2.97 µm, n = 30), septate,
constricted at the septa, distance between septa
421 µm (
x
= 8.5 µm, n = 30), brownish or
green-hyaline, wall 0.250.5 µm wide (
x
= 0.34
µm, n = 30), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata developed, small to
medium-sized, globular to subglobular,
substomatal and intraepidermal, 1332 µm in
diam. (
x
= 20.1 µm, n = 10), dark brown to
black in mass, composed of swollen hyphal
cells, subglobose, rounded to angular in outline,
410 µm wide (
x
= 6.2 µm, n = 30), brown to
dark brown, wall 0.51 µm wide (
x
= 0.9 µm, n
= 30), smooth. Conidiophores fasciculate,
arising from stromata (16 per fascicle),
emerging through stomata, unbranched, straight
to curved, cylindrical, 2070 × 46 µm (
x
=
36.1 × 4.8 µm, n = 20), 15-septate, distance
between septa 733 µm (
x
= 15.8 µm, n = 30),
medium brown, paler at the apex, wall 0.51
µm wide (
x
= 0.63 µm, n = 20), smooth, 02-
times geniculate. Conidiogenous cells
integrated, terminal, cylindrical, 828 × 45 µm
(
x
= 19.4 × 4.08 µm, n = 12), pale brown;
conidiogenous loci conspicuous, subcircular,
1.53 µm wide (
x
= 2.07 µm, n = 30), wall 0.5
0.8 µm thick (
x
= 0.53 µm, n = 30), thickened
and darkened. Conidia solitary, acicular to
obclavate, straight to curved, 12152 × 25 µm
(
x
= 59.7 × 3.03 µm, n = 30), 016-septate,
hyaline to subhyaline, thin-walled 0.250.3 µm
(
x
= 0.25 µm, n = 30), smooth; tip acute; base
truncate to obconically truncate, hila thickened
and darkened, 13 µm wide (
x
= 1.95 µm, n =
30), wall of the hila 0.30.8 µm (
x
= 0.51 µm, n
= 30) thick.
Hosts Argyreia tiliifolia (Desr.)
Wight, Convolvulus arvensis L., Dichondra
repens J.R. Forst. & G. Forst., Hewittia bicolor
Wight & Arn., Hewittia sp., Ipomoea
acuminata Ruiz & Pav., I. alba L., I. aquatica
Forssk., I. armata Roem. & Schult., I. asarifolia
(Desr.) Roem. & Schult., I. batatas (L.) Lam., I.
biloba Forssk., I. bona-nox L., I. cairica (L.)
Sweet, I. carnea Jacq., I. clarensis Alain, I.
coccinea L., I. cordofana Choisy, I. cymosa
(Desr.) Roem. & Schult., I. eriocarpa R. Br., I.
fistulosa Mart. ex Choisy, I. forsteri A. Grey ex
Hillebr., I. hederacea Jacq., I. hildebrandtii
Vatke, I. indica (Burm.) Merr., I. involucrata P.
Beauv., I. kentrocarpa Hochst. ex A. Rich., I.
lacunosa L., I. leari Knight ex Paxton, I.
longicuspis Meisn., I. nil (L.) Roth, I.
pandurata (L.) G. Mey., I. pes-caprae (L.) R.
Br., I. pestigridis L., I. pes-caprae subsp.
brasiliensis (L.) Ooststr., I. purpurea (L.) Roth,
I. quamoclit L., I. ramonii Choisy, I. reptans
Poir., I. sepiaria Koenig ex Roxb., I. triloba L.,
I. turpethum (L.) R. Br., I. villosa Ruiz & Pav.,
Jacquemontia tamnifolia (L.) Griseb.,
Merremia chryseides (Ker Gawl.) Hallier f., M.
emarginata (Burm. f.) Hallier f., M. umbellata
(L.) Hallier f., Operculina sp.
(Convolvulaceae).
Distribution Africa: Ivory Coast,
Kenya, Mauritius, Sierra Leone, Sudan,
Tanzania; Asia: Brunei, China, Hong Kong,
India, Indonesia, Japan, Korea, Laos, Malaysia,
Myanmar, Pakistan, Taiwan, Thailand;
Europe: Italy; North America and West
Indies: Antigua and Barbuda, Barbados, Costa
Rica, Cuba, Guam, Jamaica, Kansas, Panama,
Puerto Rico, USA (AL, GA, FL, HI, IL, IN,
KS, MO, NC, NE, NJ, OH, TX, VA);
Australia; Oceania: America Samoa, Cook
Islands, Kiribati, Marshall Islands, New
Caledonia, New Zealand, Fiji, Samoa, Solomon
Islands, Papua New Guinea, Vanuatu; South
America: Argentina, Brazil, Venezuela.
Material examined Vientiane Capital,
Xaythany District, Dong Makhai Village, rice
paddy, on leaves of Ipomoea involucrata, 5
May 2006, P. Phengsintham (P34);
Xiangkhouang Province, Paek District,
Phonsavan Village, rice paddy, on leaves of I.
aquatica, 3 January 2010, P. Phengsintham
(P514).
Notes The collections from Laos agree
well with C. ipomoeae as circumscribed by
Chupp (1954), Hsieh & Goh (1990) and other
authors. C. ipomoeae is part of the C. apii
complex (Crous & Braun 2003) from which it is
morphologically barely distinguishable.
Literature Chupp (1954: 171), Ellis
(1976: 253), Hsieh & Goh (1990: 8990),
Crous & Braun (2003: 228).
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Fig. 30 Cercospora ipomoeae on Ipomoea
involucrata from leaf spots: 1. Conidiophore. 2
3. Stromata with attached conidiophores. 4.
Conidiophore. 510. Conidia. Bar = 10 µm.
Fig. 31 Cercospora ipomoeae on Ipomoea
involucrata from leaf spots: 1. Lesions on host
leaf (lower surface). 2. Caispituli. 3. Stromatal
cells. 4. Internal mycelia. 58. Stromata with
attached conidiophores. 912. Conidia. Bars 1 =
10 mm, 312 = 10 µm.
(16) Cercospora meliicola Speg., Annales
Mus. Nac. Buenos Aires 20: 440, 1910. Figs
3233. Leaf spots small to fairly large,
suborbicular to irregular, 0.52 mm in diam.,
grey-brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered, dark
brown. Mycelium internal, inconspicious.
Stromata developed, small to medium-sized,
globular to subglobular, substomatal and
intraepidermal, 1034 µm in diam. (
x
= 24.7
µm, n = 5), dark brown to black in mass,
composed of swollen hyphal cells, subglobose,
rounded to angular in outline, 510 µm wide (
x
= 8.5 µm, n = 7), brown to dark brown, wall
0.51 µm wide (
x
= 0.7 µm, n = 7), smooth.
Conidiophores solitary or fasciculate, arising
from stromata (216 per fascicle), emerging
through stomata, unbranched, straight to
curved, cylindrical, 10402 × 45 µm (
x
= 200
× 4.4 µm, n = 13), 015-septate, distance
between septa 740 µm (
x
= 24 µm, n = 12),
medium brown, paler at the apex, wall 0.50.8
µm wide (
x
= 0.65 µm, n = 12), smooth,
geniculate. Conidiogenous cells terminal,
cylindrical, 1330 × 45 µm (
x
= 19.4 × 4 µm,
n = 12), pale brown; conidiogenous loci
conspicuous, subcircular, 34 µm wide (
x
=
3.25 µm, n = 4), wall 0.50.8 µm thick (
x
=
0.56 µm, n = 12), thickened and darkened.
Conidia solitary, acicular to obclavate, straight
to curved, 83105 × 34 µm (
x
= 94 × 3.5 µm,
n = 5), 514-septate, hyaline to subhyaline,
thin-walled 0.250.3 µm (
x
= 0.28 µm, n = 5),
smooth, tip acute, base truncate to obconically
truncate; hila thickened and darkened, 23 µm
wide (
x
= 2.5 µm, n = 5), wall of the hila 0.3
0.35 µm (
x
= 0.32 µm, n = 5) thick.
Colonies on PDA after 3 weeks at 25°C
are brown-grey mycelium, reaching 2530 mm
diam. Hosts Azadirachta indica A. Juss.,
Chukrasia tabularis A. Juss., Melia azadirachta
L., Toona sinensis (A. Juss.) M. Roem.
(Meliaceae).
Distribution Asia: China, India, Laos;
North America and West Indies: Panama;
South America: Argentina.
Material examined Khammoune
Province, Yommalad District, Nahao Village,
mixed deciduous forest, on leaves of Chukrasia
tabularis, 6 March 2010, P. Phengsintham
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(P581). GenBank accession no (LSU,
KC677920).
Notes The collection from Laos agrees
well with C. apii s. lat. as circumscribed by
Crous & Braun (2003) [conidiophores 50250 ×
4.57 µm and conidia 40200 × 24.4 µm].
Literature Saccado (1913: 639640),
Chupp (1954: 385).
Fig. 32 Cercospora meliicola on Chukrasia
from leaf spots: 1. Stroma with attached
conidiophores. 23. Conidiophores. 45.
Conidia. Bar = 10 µm.
(17) Cercospora nasturtii Pass. Hedwigia 16:
124, 1877. Figs 3435.
Leaf spots orbicular in shape, 17 mm
diam., pale tan to dingy grey in the centre, and
with a dark grey or brown margin. Caespituli
amphigenous, scattered, dark brown. Mycelium
internal. Hyphae branched, 25 µm wide (
x
=
3.5 µm, n = 6); septate, constricted at the septa,
distance between septa 814 µm long (
x
= 8.5
µm, n = 6); brown to subhyaline; wall 0.30.5
µm (
x
= 0.43 µm, n = 6), smooth. Stromata
developed, oval to ellipsoidal, substomatal, up
to 15 µm diam. wide, brown, composed of
swollen hyphal cells, subglobose, rounded and
angular in outline, 510 µm wide (
x
= 7.14
µm, n = 7), brown to dark brown, wall 0.81
µm wide (
x
= 0.84 µm, n = 7), smooth.
Fig. 33 Cercospora meliicola on Chukrasia
tabularis from leaf spots: 1 Caespituli. 2.
Stroma. 36. Conidiophores. 79. Conidia. 10.
Culture. Bars 29 = 10 µm, 10 = 10 mm.
Conidiophores solitary or fasciculate,
arising from stromata (212 per fascicle),
emerging through stomata, unbranched, straight
to curved, cylindrical, 20134 × 45 µm (
x
=
64.4 × 4.9 µm, n = 15), 19-septate, distance
between septa 322 µm (
x
= 12.4 µm, n = 30),
medium brown, paler at the apex, wall 0.50.8
µm wide (
x
= 0.56 µm, n = 15), smooth, 02-
times geniculate, width uniform. Conidiogenous
cells integrated, terminal, cylindrical, 1455 ×
45 µm (
x
= 27.4 × 4.5 µm, n = 9), pale
brown; conidiogenous loci conspicuous,
subcircular, 23 µm wide (
x
= 2.42 µm, n = 9),
dark brown, wall 0.81 µm thick (
x
= 0.81 µm,
n = 9). Conidia solitary, acicular, straight to
curved, 2275 × 34 µm (
x
= 36.4 × 3.7 µm, n
= 10), 17-septate, hyaline, thin-walled,
smooth, tip subotuse to acute, base truncate to
obconically truncate, hila thickened and
darkened, 23 µm wide (
x
= 2.5 µm, n = 12),
wall of the hila 0.51 µm (
x
= 0.77 µm, n = 12)
thick. Hosts Arabis glabra (L.) Bernh., A.
pendula L., Barbarea orthoceras Ledeb.,
Berteroa incana (L.) DC., Cardamine flexuosa
With., Descurainia pinnata (Walter) Britton,
Lepidium sativum L., Nasturtium officinale
W.T. Aiton, Rorippa amphibia (L.) Besser, R.
indica (L.) L.H. Bailey, R. islandica (Oeder ex
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Murray) Borbás, R. montana (Wall. ex Hook. f.
& Thomson) Small, R. palustris (L.) Besser, R.
sinapis (Burm. f.) Ohwi & H. Hara, R. sinuata
(Nutt.) Hitchc., R. sylvestris (L.) Besser,
Rorippa sp., Sisymbrium officinale (L.) Scop.,
Stanleya pinnata (Pursh) Britton
(Brassicaceae).
Distribution Africa: Angola,
Mauritius, Morocco, Sao Tome Principe; Asia:
Bhutan, China, Hong Kong, India, Japan,
Korea, Kirghizia, Laos, Taiwan, Thailand;
Europe: Armenia, Azerbaijan, Estonia,
Germany, Great Britan, Italy, Latvia, Lithuania,
Romania, Russia, Slovakia, Slovenia, Ukraine;
North America and West Indies: Canada,
Cuba, Dominican Republic, Mexico, Panama,
USA (CA, CO, DE, FL, HI, IN, KS, NH, OK,
TX, WI, WV); Oceania: New Caledonia, New
Zealand, Papua New Guinea, Vanuatu; South
America: Brazil.
Material examined Vientiane Capital,
Xaythany District, Dong Dok Village, garden,
on leaves of Nasturtium officinale, 2 February
2007, P. Phengsintham (P220); Xiangkhouang
Province, Kham District, Napa Village, on
leaves of N. officinale, 3 January 2010, P.
Phengsintham (P503). GenBank accession no
(ITS, KC731559; LSU, KC731563).
Notes In the Lao collections the
conidiophores are 20134 × 45 µm and the
conidia are 2275 × 34 µm, which is similar to
those reported by Hsieh & Goh (1990)
[conidiophores 3590 × 46 µm and conidia
2085 × 34.5 µm] and Chupp (1954)
[conidiophores 20100(150) × 46.5 µm and
conidia 2085(125) × 45(6) µm].
Literature Saccardo (1886: 533),
Chupp (1954: 183), Katsuki (1965: 26), Hieh &
Goh (1990: 95), Shin & Kim (2001: 89), Crous
& Braun (2003: 289).
(18) Cercospora nicotianae Ellis & Everh.,
Proc. Acad. Sci. Philadelphia 45: 170, 1893.
Figs 3637.
(= Cercospora apii s. lat.)
Leaf spots small to fairly large,
suborbicular to irregular, 0.53 mm in diam.,
grey-brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered, dark
brown. Mycelium internal; hyphae branched, 3
6 µm wide (
x
= 4.2 µm, n = 15), septate,
constricted at the septa, distance between septa
Fig. 34 Cercospora nasturtii from
Nasturtium officinale: 1. Stroma with attached
conidiophores. 24. Conidiophores. 59.
Conidia. Bars = 10 µm.
Fig. 35 Cercospora nasturtii from Nasturtium
officinale: 1. Internal mycelia. 2. Stroma with
attached conidiophores. 36. Conidia. Bars = 10
µm.
715 µm (
x
= 10.73 µm, n = 15), brownish
or green-hyaline, wall 0.50.8 µm wide (
x
=
0.52 µm, n = 15), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata developed, small to
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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medium-sized, globular to subglobular,
substomatal and intraepidermal, 1033 µm in
diam. (
x
= 22.7 µm, n = 7), dark brown to
black in mass, composed of swollen hyphal
cells, subglobose, rounded to angular in
outline, 615 µm wide (
x
= 7.9 µm, n = 30),
brown to dark brown, wall 0.51 µm wide (
x
= 0.66 µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (18 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical,
20395 × 47 µm (
x
= 237 × 5.54 µm, n =
13), 118-septate, distance between septa 9
40 µm (
x
= 24.3 µm, n = 30), medium
brown, paler at the apex, wall 0.50.8 µm
wide (
x
= 0.69 µm, n = 30), smooth, 02-
times geniculate. Conidiogenous cells
terminal, cylindrical, 940 × 34 µm (
x
= 24
× 3.5 µm, n = 8), pale brown; conidiogenous
loci conspicuous, subcircular, 34 µm wide
(
x
= 3.25 µm, n = 4), wall 0.50.8 µm thick
(
x
= 0.57 µm, n = 4), thickened and
darkened. Conidia solitary, acicular to
obclavate, straight to curved, 94267 × 34
µm (
x
= 149.6 × 3.6 µm, n = 5), 58-septate,
hyaline to subhyaline, thin-walled 0.3 µm (
x
= 0.3 µm, n = 5), smooth, tip acute, base
truncate to obconically truncate; hila
thickened and darkened, 23 µm wide (
x
=
2.5 µm, n = 5), wall of the hila 0.30.5 µm
(
x
= 0.46 µm, n = 5) thick.
Hosts Nicotiana tabacum L. and
other species of this genus (Solanaceae)
Distribution Worldwide.
Material examined Khammoune
Province, Yommalad District, Nahao Village,
garden, on leaves of Nicotiana tabacum, 6
March 2010, P. Phengsintham (P583).
Notes The collection from Laos
agrees well with C. apii as circumscribed by
Crous & Braun (2003). C. nicotianae is part
of the C. apii complex from which it is
morphologically barely distinguishable. C.
nicotianicola J.M. Yen (Yen & Lim 1980) is
distinguished from C. nicotianae by its small
whitish leaf spots, long conidiophores
strongly geniculate in the upper half and long
acicular to filiform conidia, up to 480 µm in
length. Literature Yen & Lim (1980: 163),
Crous & Braun (2003).
Fig. 36 Cercospora nicotianae on Nicotiana
tabacum from leaf spots: 1. Stroma with
attached conidiophores. 24. Conidia. Bar = 10
µm.
Fig. 37 Cercospora nicotianae on Nicotiana
tabacum from leaf spots: 1. Lesions on host leaf
(lower surface). 2. Internal mycelium. 34.
Stromata with attached conidiophores. 56.
Conidiophores. 79. Conidia. Bars 1 = 10 mm,
29 = 10 µm.
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(19) Cercospora paederiicola Y.L. Guo,
Mycosystema 4: 119, 1991. Figs 3839.
Leaf spots subcircular to irregular, 18
mm diam., pale brown to greyish brown in the
center, and with dark brown margin. Caespituli
amphigenous, scattered, dark brown. Mycelium
internal; hyphae branched, 27 µm wide (
x
=
3.76 µm, n = 30), septate, constricted at the
septa, distance between septa 516 µm (
x
=
9.69 µm, n = 17), brownish or green-hyaline,
wall 0.30.8 µm wide (
x
= 0.52 µm, n = 30),
smooth, forming plate-like plectenchymatous
stromatic hyphal aggregations. Stromata well-
developed, oval to ellipsoidal, 1560 µm diam.
(
x
= 27 µm, n = 8), brown, substomatal,
composed of swollen hyphal cells, subglobose,
rounded to angular in outline, 510 µm wide (
x
= 6 µm, n = 12), brown to dark brown, wall
0.50.8 µm wide (
x
= 0.53 µm, n = 12).
Conidiophores fasciculate, arising from
stromata (27 per fascicle), emerging through
stomata, unbranched, straight to curved,
cylindrical, 20126 × 46 µm (
x
= 52.53 × 5
µm, n = 19), 14-septate, distance between
septa 1532 µm (
x
= 23.65 µm, n = 20),
medium brown, paler at the apex, wall 0.50.8
µm wide (
x
= 0.69 µm, n = 30), smooth, 02
times geniculate, width uniform; conidiogenous
cells integrated, terminal or intercalary,
cylindrical, 1530 × 46 µm, pale brown;
conidiogenous loci conspicuous, subcircular, 2
3 µm wide (
x
= 2.53 µm, n = 15), dark brown,
wall 0.81 µm wide (
x
= 0.84 µm, n = 15).
Conidia solitary, cylindrical or obclavate-
cylindrical when short, fully developed long
conidia always acicular, straight to curved, 25
157 × 1.53 µm (
x
= 85.86 × 2.7 µm, n = 8),
619-septate, hyaline, thin-walled, smooth, tip
acute, base truncate to obconically truncate, hila
1.53 µm wide (
x
= 2.21 µm, n = 7), wall 0.3
0.5 µm (
x
= 0.41 µm, n = 8), thickened and
darkened.
Colonies on PDA after 3 weeks at 25°C
grey, 12 mm diam., spreading surface ridged
and smooth, mycelium brown, hyphae 27 µm
wide (
x
= 3.6 µm, n = 30), septate, constricted
at the septa, distance between septa 417 µm
long (
x
= 8.9 µm, n = 30), wall 0.44 µm,
smooth. Conidia not formed in culture.
Host Paederia scandens (Lour.) Merr.
(Rubiaceae).
Distribution Asia: China, Laos.
Material examined Vientiane Capital,
Xaythany District, Dong Makkhai Village,
mixed deciduous forest, on leaves of Paederia
scandens, 29 March 2006, P. Phengsintham
(P01). Notes The collection from Laos differs
from the Chinese type material of Cercospora
paederiicola in having well-developed
stromata, up to 60 µm diam. (versus small or
almost lacking stromata, reduced to a few
brown cells). Morphologically this species
belongs to the Cercospora apii complex,
characterized by having long, brown
conidiophores and long, acicular, pluriseptate,
hyaline conidia (Crous & Braun 2003).
Literature Crous & Braun (2003: 35).
Fig. 38 Cercospora paederiicola on
Paederia scandens from leaf spots: 1.
Stroma with attached conidiophores. 24.
Conidiophores. 58. Conidia. Bar = 10 µm.
(20) Cercospora physalidis Ellis, Amer.
Naturalist 16: 810, 1882. Figs 4041.
Cercosporina physalidis (Ellis)
Miura, South Manch, Railway Co. Agric.
Rep. 27: 525, 1928.
= Cercospora physalidicola Ellis &
Barthol., Erythea 4: 28, 1896.
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Fig. 39 Cercospora paederiicola on Paederia
scandens from leaf spots/lesions: 12. Lesions
on host leaves (1. upper surface, 2. lower
surface). 3. Caespituli. 4. Stroma with attached
young conidiophores. 5. Internal mycelium. 6
8. Conidiophores. 911. Conidia (10. base of
conidium, 11. apex of conidium). 13. Culture.
Bars 12, 13 = 10 mm, 312 = 10 µm.
= Cercospora physalidicola Speg.,
Anales Mus. Nac. Buenos Aires II, 3: 342, 1899
(nom. illeg.), homonym of C. physalidicola
Ellis & Barthol., 1896.
= Cercosporina physalidicola Speg.,
Anales Mus. Nac. Hist. Nat. Buenos Aires 20:
425, 1910.
Leaf spots circular or suborbicular, 110
mm diam., greyish brown to medium brown in
the centre, and with medium brown to dark
brown margin. Caespituli amphigenous,
scattered, dark brown. Mycelium internal;
hyphae branched, 36 µm wide (
x
= 4.5 µm, n
= 10), septate, constricted at the septa, distance
between septa 614 µm (
x
= 10.3 µm, n = 10),
brownish or green-hyaline, wall 0.250.8 µm
wide (
x
= 0.48 µm, n = 10), smooth, forming
plate-like plectenchymatous stromatic hyphal
aggregations. Stromata well-developed, oval to
ellipsoidal, substomatal, 1532 µm diam. (
x
=
23 µm, n = 15), brown, composed of swollen
hyphal cells, subglobose, rounded to angular in
outline, 412 µm wide (
x
= 7.83 µm, n = 30),
brown to dark brown, wall 0.51 µm wide (
x
=
0.72 µm, n = 30), smooth. Conidiophores
solitary or fasciculate, arising from stromata (2
8 per fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 10
56 × 36 µm (
x
= 38 × 5.73 µm, n = 22), 02-
septate, distance between septa 735 µm (
x
=
19.7 µm, n = 22), medium brown, paler at the
apex, wall 0.50.8 µm wide (
x
= 0.51 µm, n =
22), smooth; conidiogenous cells integrated,
terminal, cylindrical, 1735 × 46 µm (
x
= 21.8
× 4.62 µm, n = 14), pale brown; conidiogenous
loci conspicuous, subcircular, 22.5 µm wide
(
x
= 2.03 µm, n = 17), dark brown, wall 0.51
µm thick (
x
= 0.79 µm, n = 17). Conidia
solitary, acicular, straight to curved, 5259 × 3
4 µm (
x
= 55.5 × 3.4 µm, n = 6), 34-septate,
hyaline, thin-walled, smooth, tip acute, base
truncate to obconically truncate, hila thickened
and darkened, 2 µm wide (
x
= 2 µm, n = 6),
wall of the hila 0.50.8 µm (
x
= 0.65 µm, n =
6) thick.
Hosts Physalis alkekengi L., P.
angulata L., P. franchetii Mast., P. heterophylla
Nees, P. hybrida Vilm., P. lanceolata Michx.,
P. lobata Torr., P. longifolia Nutt., P. minima
L., P. mollis Nutt., P. parviflora Lag., P.
pubescens L., P. subglabrata Mack. & Bush, P.
variabilis Fries, P. violacea Carrière, P.
virginica A. Grey, P. viscosa L., Physalis sp.
(Solanaceae).
Distribution Africa: Congo, Ethiopia,
Gabon, Gambia, Ghana, Guinea, Kenya, Libya,
Malawi, Mauritius, Morocco, Nigeria, Samalia,
Sourth Africa, Seychelles, Sierra Leone, Sudan,
Tanzania, Togo, Uganda, Zambia, and
Zimbabwe; Asia: Afghanistan, Bangladesh,
Bhutan, Brunei, Cambodia, China, Guam, Hong
Kong, India, Indonesia, Iraq, Japan, Jordan,
Laos, Korea, Malaysia, Myanmar, Nepal,
Pakistan, Philippines, Singapore, Sri Lanka,
Taiwan, Thailand, Yemen; Europe: Armenia,
Bulgaria, Cyprus, Georgia, Germany, Romania,
Russia, Spain, Switzerland, Ukraine; North
America and West Indies: Barbados, Cuba,
Dominican Republic, French Antilles, El
Salvador, Guatemala, Haiti, Jamaica, Mexico,
Panama, Puerto Rico, Trinidad and Tobago,
Virgin islands, USA (CA, CO, Eastern states,
FL, GA, HI, IA, IN, KS, KY, MI, NE, OK, TX,
WI); Australia; Oceania: American Samoa,
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Fiji, Micronesia, New Caledonia, New Zealand,
Palau, Papua New Guinea, Samoa, Solomon
Islands, Tonga, Vanuatu, Wallis and Futuna;
South America: Argentina, Bolivia, Brazil,
Colombia, Surinam, Venezuela.
Material examined Vientiane Capital,
Sisathanak District, Had Donchanh, garden, on
leaves of Physalis angulata, 3 May 2006, P.
Phengsintham (P33).
Notes The collection from Laos has
conidiophores (1056 × 36 µm) and conidia
(5259 × 34 µm) with a similar size as
Cercospora physalidis. They are, however,
rather short, probably due to a relatively
immature stage in which the fungus has been
collected. The taxonomy of Cercospora on
Physalis spp. and other hosts of the Solanaceae
is still confused and unclear. Various
Cercospora species described from different
solanaceous hosts are morphologically
indistinguishable, so that Braun & Melnik
(1997) merged them in a single compound
     physalidis
Since C. physalidis emend. U. Braun & Melnik
is morphologically also indistinguishable from
C. apii, Crous & Braun (2003) reduced the
whole C. physalidis complex to synonym with
C. apii s. lat. However, detailed inoculation
experiments and molecular sequence analyses
of this complex of fungi are not yet available.
Hence, we prefer to use the traditional name.
Literature Saccado (1886: 450),
Chupp (1954: 533), Ellis (1976: 286), Braun &
Melnik (1997), Crous & Braun (2003: 321).
(21) Cercospora ricinella Sacc. & Berl., Atti
Reale Ist. Ven. Sci. Lett. Art. 6, Ser. 3: 721,
1885. Figs 4243.
Cercosporina ricinella (Sacc. & Berl.)
Speg., Anales Mus. Nac. Hist. Nat. Buenos
Aires 20: 429, 1910.
= Cercospora albido-maculans G.
Winter, Hedwigia 24: 202. 1885; also in J.
Mycol. 1: 124, 1885.
= Cercospora ricini Speg., Anales Mus.
Nac. Hist. Nat. Buenos Aires Ser. 2. 3: 343,
1899. Leaf spots small, suborbicular to
irregular, 0.52 mm in diam., grey-brown in the
centre, and with dark brown margin. Caespituli
amphigenous, scattered, dark brown. Mycelium
internal, inconspicuous. Stromata developed,
Fig. 40 Cercospora physalidis from Physalis
angulata: 1. Stroma with attached
conidiophores. 24. Conidiophores. 56.
Conidia. Bar = 10 µm.
Fig. 41 Cercospora physalidis on Physalis
angulata: 1. Lesion on host leaf (upper surface).
2. Internal hyphae. 35. Stromata with attached
conidiophores. 6. Conidiophore. 78. Conidia.
Bars 1 = 10 mm, 28 = 10 µm.
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small to medium-sized, globular to subglobular,
substomatal and intraepidermal, 1520 µm in
diam. (
x
= 17.5 µm, n = 5), dark brown to
black in mass, composed of swollen hyphal
cells, subglobose, rounded to angular in outline,
37 µm wide (
x
= 5.3 µm, n = 9), brown to
dark brown, wall 0.50.8 µm wide (
x
= 0.58
µm, n = 9), smooth. Conidiophores fasciculate,
arising from stromata (211 per fascicle),
emerging through stomata, unbranched, straight
to curved, cylindrical, 15105 × 46 µm (
x
=
46.4 × 4.94 µm, n = 13), 13-septate, distance
between septa 551 µm (
x
= 20.3 µm, n = 30),
medium brown, paler at the apex, wall 0.50.8
µm wide (
x
= 0.63 µm, n = 30), smooth, 02-
times geniculate. Conidiogenous cells terminal,
cylindrical, 1028 × 46 µm (
x
= 17.4 × 4.8
µm, n = 8), pale brown; conidiogenous loci
conspicuous, subcircular, 1.53 µm wide (
x
=
2.12 µm, n = 8), wall 0.50.8 µm thick (
x
=
0.65 µm, n = 8), thickened and darkened.
Conidia solitary, acicular to obclavate, straight
to curved, 3298 × 34 µm (
x
= 54.8 × 3.2 µm,
n = 5), 311-septate, hyaline to subhyaline,
thin-walled 0.250.3 µm (
x
= 0.29 µm, n = 5),
smooth, tip acute, base truncate to obconically
truncate; hila thickened and darkened 34 µm
wide (
x
= 3.2 µm, n = 5), wall of the hila 0.25
0.3 µm (
x
= 0.28 µm, n = 5) thick.
Hosts Ricinus communis L.
(Euphorbiaceae).
Distribution Africa: Angola, Egypt,
Ethiopia, Ghana, Gulf States, Kenya, Malawi,
Mauritius, Morocco, Mozambique, Nigeria,
Sierra Leone, Somalia, South Africa, Sudan,
Tanzania, Togo, Uganda, Zimbabwe; Asia:
Bangladesh, Cambodia, China, India,
Indonesia, Japan, Kazakhstan, Korea, Laos,
Malaysia, Myanmar, Nepal, Pakistan,
Philippines, Sri Lanka, Taiwan, Thailand;
Europe: Bulgaria, Georgia, Russia, Ukraine;
North America and West Indies: Barbados,
Cuba, Dominican Republic, El Salvador,
Guatemala, Haiti, Jamaica, Panama, Puerto
Rico, Trinidad and Tobago, USA (CA, FL,
MO); Australia; Oceania: French Polynesia,
New Caledonia, Vanuatu; South America:
Argentina, Brazil, Colombia, Venezuela.
Material examined Phongsali
Province, Phongsali District, Hathin Village, on
leaves of Ricinus communis, riverbank, 23 June
2010, P. Phengsintham (P594); Vientiane
Capital, Had Donechan, Mekong riverbank, on
leaves of R. communis, 27 July 2010, P.
Phengsintham (P606).
Notes A true Cercospora s. str. close
to or identical with C. apii s. lat. (Crous &
Braun 2003). The collections from Laos agree
with C. ricinella as circumscribed by Chupp
(1954) [conidiophores 1090 × 4.55 µm and
conidia 15120 × 2.54.5 µm], and Hsieh &
Goh (1990) [conidiophores 1090 × 46 µm
and conidia 15120 × 2.55 µm].
Literature Chupp (1964: 229),
Vasudeva (1963: 174), Katsuki (1965: 32), Ellis
(1976: 259), Hsieh & Goh (1990: 112), Shin &
Kim (2001: 97), Cous & Braun (2003: 255).
Fig. 42 Cercospora ricinella on Ricinus
communis from leaf spots: 1. Stroma with
attached conidiophores. 24.
Conidiophores. 5. Conidia. Bar = 10 µm.
(22) Cercospora senecionis-walkeri
Phengsintham; Chukeatirote, McKenzie,
K.D. Hyde & U. Braun, Pl. Pathol. &
Quarantine 2(1): 7071, 2012. Figs 4445.
Leaf spots circular to slightly
irregular, 23 mm diam., at first dark
green, later becoming brown to dark brown
in the centre, dark brown margin.
Caespituli amphigenous, conspicuous,
scattered, dark brown. Mycelium internal,
internal hyphae branched, 34 µm wide (
x
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 43 Cercospora ricinella on Ricinus
communis from leaf spots: 1. Lesions and
Caespituli on host leaf (lower surface). 2.
Internal mycelium. 3. Stroma with attached
conidiophores. 46. Conidiophores. 7.
Conidiophore with attached conidium. 8.
Conidium. 9. Apex of conidium. Bars = 10 µm.
=3.5 µm, n = 7), septate, constricted at the
septa, distance between septa 1214 µm (
x
=
13 µm, n = 7), subhyaline, wall 0.3 µm wide (
x
= 0.3 µm, n = 7), smooth. Stromata
substomatal, intraepidermal, ellipsoidal,
lenticular 1025 µm diam. (
x
= 18.8 µm, n =
6), brown, stromatal cells 410 µm diam. (
x
=
6 µm, n = 20), wall 0.51 µm wide (
x
= 0.78
µm, n = 20), smooth. Conidiophores single or
fasciculate, arising from stromata (18 per
fascicle), 05 geniculate, cylindrical, straight to
curved, 67170 × 56 µm (
x
= 114 × 5.53 µm,
n = 20), 08-septate, distance between septa
1032 µm (
x
= 21 µm, n = 30), pale brown or
olivaceous brown; wall 0.51 µm wide (
x
=
0.82 µm, n = 30), smooth. Conidiogenous cells
intergrated, terminal, cylindrical, tapering to the
apex, 1430 × 45 µm (
x
= 21,8 × 4.5 µm, n =
9); conidiogenous loci (scars) conspicuous,
thickened and darkened, 24 µm wide (
x
=
3.07 µm, n = 30), wall of the loci 0.51 µm (
x
= 0,54 µm, n = 30); thick. Conidia solitary,
clavate, cylindrical-clavate, obclavate, straight
to curved, 1782 × 47 µm (
x
= 50.66 × 5.66
µm, n = 10), 08-sepate, slightly constricted at
the septa, subhyaline or olivaceous-brown,
smooth, wall 0.30.5 µm thick (
x
= 0.37 µm, n
= 10), apex subobtuse, based truncate, hila 23
µm wide (
x
= 2.2 µm, n = 10), wall of the hila
0.5 µm wide (
x
= 0.5 µm, n = 10), darkened.
Hosts Senecio aureus L., S. aureus
var. balamitea Torr. & Grey, S. walkeri Arn.
(Asteraceae).
Distribution Asia: China, Laos,
Thailand.
Material examined Bokeo Province,
Houay Xay District, Phimonsine Village, on
leaves of Senecio walkeri, 20 February 2010, P.
Phengsintham (P567, MFLU 12-2478,
holotype). GenBank accession no (ITS,
KC677887; LSU, KC677921).
Notes Several Cercospora species
have been described from Senecio spp., but all
are distinct from this species. C. senecionis
Ellis & Everh. was reduced to synonym with C.
jacquiniana Thüm. by Chupp (1954). However,
based on a re-examination of type material,
     
C. senecionis represents a distinct true species
of Cercospora with acicular conidia, similar to
those of C. apii s. lat., but 80200 µm long and
above all 36 µm wide. C. jacquiniana is
similar to C. senecionis-walkeri with regard to
its conidial shape and pigmentation, but has
much shorter conidiophores and shorter conidia,
usually only 13-sepate, which are hyaline to
faintly pigmented. Therefore, this species was
reallocated to Passalora by Braun (in Braun &
    C. senecionis-
grahamii Thirum. & Govindu (Thirumalachar
& Govindu 1962) on Senecio grahamii Benth.
is close to C. senecionis, but differs in having
acicular to obclavate conidia, only 34 µm
wide. Collections on Senecio walkeri from Laos
and Thailand were originally referred to as C.
senecionicola Davis (Phengsintham et al.
2012), but further examinations and a detailed
comparison with the latter species showed that
the Asian collections are not conspecific with
this North American species, which is
morphologically easily distinguishable from C.
senecionis-walkeri by its narrower acicular-
subcylindrical conidia, only 23.5 µm wide
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
73
(Chupp 1954). The South American Passalora
senecionicola U. Braun & Delhey (Braun et al.
2006) on Senecio bonariensis in Argentina is
morphologically very close to C. senecionis-
walkeri but characterized by having quite
distinct lesions, larger stromata, up to 60 µm
diam. and short conidia that are cylindrical. P.
senecionicola was assigned to Passalora due to
subhyaline to pale olivaceous conidia, but it is
possible that this species belongs in Cercospora
which may be suggested by the phylogenetic
position of C. senecionis-walkeri. Despite
having almost hyaline to somewhat pigmented
conidia, the latter species clusters within the
Cercospora clade in an isolated, basal position
adjacent to C. zeae-maydis Tehon & E.Y.
Daniels and C. zeina Crous & U. Braun
(Groenewald et al. 2012).
Literature Chupp (1954: 22),
Thirumalachar & Govindu (1962: 244288),
Ellis (1971: 279284), Braun  
(1997), Crous & Braun (2003: 21), Braun et al.
(2006).
Fig. 44 Cercospora senecionis-walkeri on
Senecio walker from leaf spots: 1. Stroma
with attached conidiophores. 2. Conidiophore.
34. Conidia. Bar = 10 µm.
Fig. 45 Cercospora senecionis-walkeri on
Senecio walker from leaf spots/lesions: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Caespituli. 4. Internal
mycelium. 57. Conidiophores. 810. Conidia.
Bars 12 = 10 mm, 410 = 10 µm.
(23) Cercospora sp. (C. apii s. lat.). Figs 4647.
Leaf spots angular to irregular, 18 mm
diam., grey-brown in the centre, and with dark
brown margin. Caespituli amphigenous,
scattered, dark brown. Mycelium internal;
hyphae branched, 24 µm wide (
x
= 3.5 µm, n
= 28), septate, constricted at the septa, distance
between septa 614 µm (
x
= 7.8 µm, n = 20),
brownish or green-hyaline, wall 0.30.5 µm
wide (
x
= 0.43 µm, n = 28), smooth, forming
plate-like plectenchymatous stromatic hyphal
aggregations. Stromata developed, small to
medium-sized, globular to subglobular,
substomatal and intraepidermal, 852 µm diam.
(
x
= 36.6 µm, n = 5), dark brown to black in
mass, composed of swollen hyphal cells,
subglobose, rounded to angular in outline, 512
µm wide (
x
= 8.13 µm, n = 30), brown to dark
brown, wall 0.51 µm wide (
x
= 0.91 µm, n =
30), smooth. Conidiophores fasciculate, arising
from stromata (14 per fascicle), emerging
through stomata, unbranched, straight to
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
74
curved, cylindrical, 3380 × 57 µm (
x
= 51.9
× 5.27 µm, n = 11), 13-septate, distance
between septa 831 µm (
x
= 19 µm, n = 20),
medium brown, paler at the apex, wall 0.51
µm wide (
x
= 0.83 µm, n = 11), smooth, 01-
times geniculate; conidiogenous cells
integrated, terminal, cylindrical, 1631 × 45
µm (
x
= 22.8 × 4.67 µm, n = 6), pale brown;
conidiogenous loci conspicuous, subcircular, 2
3 µm wide, wall 0.50.8 µm thick (
x
= 0.56
µm, n = 4), thickened and darkened. Conidia
solitary, acicular, straight to curved, 43185 × 2
µm (
x
= 81.25 × 2 µm, n = 4), 312-septate,
hyaline to subhyaline, thin-walled, smooth, tip
acute, base truncate to obconically truncate, hila
thickened and darkened, 11.5 µm wide, wall of
the hila 0.5 µm thick.
Colonies on PDA after 3 weeks at 25°C
spreading surface ridged, white-grey in the
centre, brown margin, reaching 1025 mm
diam., hyphae 16 µm wide (
x
= 3.9 µm, n =
30), septate, constricted at the septa, distance
between septa 816 µm (
x
= 12 µm, n = 30),
brownish to subhyaline, wall 0.30.8 µm thick
(
x
= 0.51 µm, n = 30), smooth or finely
verruculose. Conidia not formed in the culture.
Hosts Oroxylum indicum (L.) Kurz
(Bignoniaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Houay Daenmeuang Village,
fallow forest, on leaves of Oroxylum indicum,
26 April 2006, P. Phengsintham (P32).
Notes Pseudocercospora oroxyli
(A.K. Kar & M. Mandal) Deighton (
Cercospora oroxyli A.K. Kar & M. Mandal,
1969) described from India differs from the
specimen collected in Laos in having
inconspicuous, unthickened conidiogenous loci.
The cercosporoid fungus on Oroxylum indicum
from Laos agrees well with Cercospora apii s.
lat. (Crous & Braun 2003) [conidiophores 10
450 × 28 µm and conidia 10380 × 1.55.5
µm]. Literature Crous & Braun (2003: key).
(24) Cercospora stahlianthi Z.D. Jiang & P.K.
Chi, in Chi, Fungal diseases of medicinal plants
in Guangdong province: 162, 1994. Figs 4849.
Leaf spots circular to irregular, 15 mm
diam., pale brown to dark brown in the centre,
Fig. 46 Cercospora sp. on Oroxylum
indicum from leaf spots: 1. Stroma with
attached conidiophores. 23. Conidiophores.
47. Conidia. Bar = 10 µm
Fig. 47 Cercospora sp. on Oroxylum indicum
from leaf spots: 1. Lesions on host leaf (lower
surface). 2. Internal mycelium. 34. Stromata
with attached conidiophores. 56.
Conidiophores. 78. Conidia. 9. Culture. Bars
28 = 10 µm, 9 = 10 mm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
75
and with yellowish to medium brown margin.
Caespituli amphigenous, scattered, dark brown.
Mycelium internal; hyphae branched, 26 µm
wide (
x
= 3.8 µm, n = 30),septate, constricted
at the septa, distance between septa 618 µm
(
x
= 10.07 µm, n = 30), brownish, wall
approximately 0.30.5 µm wide (
x
= 0.46 µm,
n = 30), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata well-developed, oval to
ellipsoidal, substomatal, 840 µm diam. (
x
=
24.14 µm, n = 7), brown, composed of swollen
hyphal cells, subglobose, rounded to angular in
outline, 517 µm wide (
x
= 8.3 µm, n = 30),
brown to dark brown, wall 0.51 µm wide (
x
=
0.81 µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (215 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 20
240 × 46 µm (
x
= 78.2 × 4.83 µm, n = 30), 1
6-septate, distance between septa 665 µm (
x
=
27.5 µm, n = 30), medium brown, paler at the
apex, wall 0.51 µm wide (
x
= 0.77 µm, n =
30), smooth, 02 times geniculate.
Conidiogenous cells integrated, terminal,
cylindrical, 1565 × 45 µm (
x
= 34.6 × 4.35
µm, n = 17), pale brown; conidiogenous loci
conspicuous, subcircular, 24 µm wide (
x
=
2.83 µm, n = 30), dark brown, wall 0.50.8 µm
thick (
x
= 0.51 µm, n = 30). Conidia solitary,
acicular, straight to curved, 30240 × 24 µm
(
x
= 83.37 × 3.73 µm, n = 30), 223-septate,
hyaline, thin-walled, smooth, tip acute, base
truncate to obconically truncate, hila thickened
and darkened, 1.53 µm wide (
x
= 2.28 µm, n
= 30), wall of the hila 0.30.5 µm (
x
= 0.49
µm, n = 30) thick.
Hosts Stahlianthus involucratus (King
ex Baker) Craib and S. thorelii Gagnep.
(Zingiberaceae).
Distribution Asia: China, Laos.
Material examined Vientiane Capital,
Xaythani District, Dong Makhai village, dry
dipterocarp forest, on leaves of Stahlianthus
thorelii, 20 May 2006, P. Phengsintham (P51);
Xaythani District, Dongdok Village, on leaves
of S. thorelii, 12 August 2006, P. Phengsintham
(P141).
Notes The collections from Laos have
a size of conidiophores and conidia close to that
of C. apii s. lat.
Literature Crous & Braun (2003: 386).
Fig. 48 Cercospora stahlianthi on
Stahlianthus thorelii: 12. Stromata with
attached conidiophores. 35. Conidia. Bars = 10
µm.
Fig. 49 Cercospora stahlianthi on
Stahlianthus thorelii: 1. Lesions on host leaf
(upper surface). 2. stroma. 3. Internal hyphae.
45. Stromata with attached conidiophores. 6
7. Conidiophores. 811. Conidia. Bars 1 = 10
mm, 211 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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(25) Cercospora taccae (Syd. & P. Syd.)
Chupp. A monograph of the fungus genus
Cercospora 560, 1954. Figs 5051.
Cercosporina taccae Syd & P. Syd.,
Ann. Mycol. 11: 406, 1913.
Leaf spots small to fairly large,
suborbicular to irregular, 122 mm in diam.,
dark brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered, dark
brown. Mycelium internal; hyphae branched, 3
5 µm wide (
x
= 3.5 µm, n = 7), septate,
constricted at the septa, distance between septa
1015 µm (
x
= 11.25 µm, n = 7), brownish or
green-hyaline, wall 0.50.8 µm wide (
x
= 0.57
µm, n = 7), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata developed, small to
medium-sized, globular to subglobular,
substomatal and intraepidermal, 1535 µm in
diam. (
x
= 21.7 µm, n = 10), dark brown to
black in mass, composed of swollen hyphal
cells, subglobose, rounded to angular in outline,
511 µm wide (
x
= 7.8 µm, n = 18), brown to
dark brown, wall 0.51 µm wide (
x
= 0.83 µm,
n = 18), smooth. Conidiophores fasciculate,
arising from stromata (113 per fascicle),
emerging through stomata, unbranched, straight
to curved, cylindrical, 35179 × 46 µm (
x
=
98 × 4 µm, n = 11), 110-septate, distance
between septa 838 µm (
x
= 18 µm, n = 24),
medium brown, paler at the apex, wall 0.50.8
µm wide (
x
= 0.66 µm, n = 24), smooth,
geniculate. Conidiogenous cells integrated,
terminal, cylindrical, 830 × 45 µm (
x
= 18.8
× 4.5 µm, n = 6), pale brown; conidiogenous
loci conspicuous, subcircular, 1.53 µm wide
(
x
= 2.5 µm, n = 15), wall 0.50.8 µm thick (
x
= 0.6 µm, n = 15), thickened and darkened.
Conidia solitary, acicular to obclavate, straight
to curved, 73195 × 36 µm (
x
= 115.25 ×
4.75 µm, n = 7), 920-septate, hyaline to
subhyaline, thin-walled 0.250.3 µm (
x
= 0.29
µm, n = 9), smooth, tip acute, base truncate to
obconically truncate; hila thickened and
darkened 12 µm wide (
x
= 1.75 µm, n = 9),
wall of the hila 0.250.3 µm (
x
= 0.28 µm, n =
9) thick.
Hosts Tacca chantrieri André, T.
cristata Jack, T. integrifolia Ker Gawl., T.
involucrata Schumach. & Thonn., T.
leontopetaloides (L.) Kuntze, T. macrantha H.
Limpr., T. palmata Blume, T. pinnatifida J.R.
Forst. & G. Forst., Tacca sp. (Taccaceae).
Distribution Africa: Gabon, Malawi,
Sierra Leone; Asia: India, Indonesia, Laos,
Malaysia, Phillipines, Thailand; Australia;
Oceania: American Samoa, Cook Islands, Fiji,
Kiribati, Micronesia, Niue, Palau, Papua New
Guinea, Samoa, Tonga, Tuvalu, Wallis and
Futuna.
Material examined Luangprabang
province, Xiengngeun District, Lak 10 village,
on leaves of Tacca integrifoia, 7 February
2007, P. Phengsintham (P244).
Notes A true Cercospora s. str. close
to or identical with Cercospora apii s. lat.
(Crous & Braun 2003). The collection from
Laos agrees with C. taccae as circumscribed by
Chupp (1954) [conidiophores 2575 × 46 µm,
conidia 50150 × 24 µm]
Literature Chupp (1954: 560), Crous
& Braun (2003: 395).
Fig. 50 Cercospora taccae on Tacca
integrifolia: 1. Stroma with attached
conidiophores. 34. Conidiophores. 57.
Conidia. Bar = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 51 Cercospora taccae on Tacca
integrifolia from leaf spots: 12. Lesions on
host leaves (1. upper surface, 2. lower surface).
3. Caespituli. 4. Stroma with attached
conidiophores. 56. Conidiophores. 78.
Conidia. Bars 12 = 10 mm, 48 = 10 µm.
(26) Cercospora trewiae A.K. Kar & M. Madal,
Trans. Brit. Mycol. Soc. 53: 347, 1969.
Figs 5253.
Leaf spots small to fairly large,
suborbicular to irregular, 0.510 mm in diam.,
grey-brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered, dark
brown. Mycelium internal; hyphae branched, 3
6 µm wide (
x
= 4.2 µm, n = 5), septate,
constricted at the septa, distance between septa
810 µm (
x
= 8.8 µm, n = 5), brownish or
green-hyaline, wall 0.30.5 µm wide (
x
= 0.46
µm, n = 5), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata developed, small to
medium-sized, globular to subglobular,
substomatal and intraepidermal, 1072 µm in
diam. (
x
= 39.2 µm, n = 9), dark brown to
black in mass, composed of swollen hyphal
cells, subglobose, rounded to angular in outline,
513 µm wide (
x
= 8.2 µm, n = 21), brown to
dark brown, wall 0.50.8 µm wide (
x
= 0.64
µm, n = 21), smooth. Conidiophores
fasciculate, arising from stromata (223 per
fascicle), emerging through stomata,
unbranched, straight to curved, cylindrical, 35
215 × 47 µm (
x
= 130 × 5.33 µm, n = 9), 19-
septate, distance between septa 835 µm (
x
=
20 µm, n = 30), medium brown, paler at the
apex, wall 0.50.8 µm wide (
x
= 0.59 µm, n =
30), smooth, 12-times geniculate.
Conidiogenous cells terminal, cylindrical, 15
38 × 45 µm (
x
= 27.1 × 4.57 µm, n = 7), pale
brown; conidiogenous loci conspicuous,
subcircular, 23 µm wide (
x
= 2.33 µm, n = 7),
wall 0.50.8 µm thick (
x
= 0.6 µm, n = 7),
thickened and darkened. Conidia solitary,
acicular to obclavate, straight to curved, 74135
× 35 µm (
x
= 108 × 3.75 µm, n = 8), 411-
septate, hyaline to subhyaline, thin-walled 0.3
0.5 µm (
x
= 0.33 µm, n = 8), smooth, tip acute,
base truncate to obconically truncate; hila
thickened and darkened 1.52 µm wide (
x
=
1.9 µm, n = 5), wall of the hila 0.30.5 µm (
x
=
0.34 µm, n = 5) thick.
Colonies on PDA after 3 weeks at 25 °C
grey, 1015 mm diam., grey green in colour in
the centre and dark green margin, smooth,
hyphae brown.
Hosts Trewia nudiflora L.
(Euphorbiaceae)
Distribution Asia: India, Laos.
Material examined Khammoune
Province, Yommalad District, Nahao Village,
Riverbank, on leaves of Trewia nudiflora, 6
March 2010, P. Phengsintham (P580);
Phongsali Province, Phongsali District, Hathin
Village, riverbank, on leaves of T. nudiflora, 23
June 2010, P. Phengsintham (P595).
Notes A true Cercospora s. str.
distinct from C. apii s. lat. (Crous & Braun
2003). Literature Kar & Madal (1969: 347),
Crous & Braun (2003: 409).
(27) Cercospora volkameriae Speg., Revista
Mus. La Plata 15: 47, 1908. Figs 5455.
Leaf spots angular to irregular, 18 mm
diam., reddish brown to grey brown in the
center, margin yellowish to pale brown.
Caespituli amphigenous, scattered, dark brown.
Mycelium internal; hyphae branched, 26 µm
wide (
x
= 4.1 µm, n = 20), septate, constricted
at the septa, distance between septa 614 µm
(
x
= 7.8 µm, n = 20), brownish or green-
hyaline, wall 0.51 µm wide (
x
= 0.70 µm, n =
20), smooth, forming plate-like
plectenchymatous stromatic hyphal
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 52 Cercospora trewiae on Trewia
nudiflora from leaf spots: 1. Stroma with
attached conidiophores. 2. Conidiophore.
34. Conidia. Bar = 10 µm.
Fig. 53 Cercospora trewiae on Trewia
nudiflora from leaf spots: 1. Caespituli. 23.
Stromata with attached conidiophores. 45.
Conidia. 67. Culture. Bars 1, 67 = 10 mm, 2
5 = 10 µm.
aggregations. Stromata well-developed, oval to
ellipsoidal, substomatal and intraepidermal, 19
45 µm diam. (
x
= 37.6 µm, n = 8), brown,
composed of swollen hyphal cells, subglobose,
rounded and angular in outline, 48 µm diam.
(
x
= 6.2 µm, n = 15), brown to dark brown,
wall 12 µm wide (
x
= 1.47 µm, n = 15),
smooth. Conidiophores fasciculate, arising from
stromata (222 per fascicle), emerging through
stomata, unbranched, straight to curved,
cylindrical, 12148 × 45 µm (
x
= 48.9 × 4.4
µm, n = 30), 15-septate, distance between
septa 924 µm (
x
= 15.4 µm, n = 30), medium
brown, paler at the apex, wall 0.51 µm wide
(
x
= 0.79 µm, n = 26), smooth, 05 times
geniculate, width uniform; conidiogenous cells
integrated, terminal or intercalary, cylindrical,
930 × 45 µm (
x
= 21 × 4.3 µm, n = 20), pale
brown; conidiogenous loci conspicuous,
subcircular, 13 µm wide, dark brown, wall of
the loci 0.51 µm wide (
x
= 0.54 µm, n = 12).
Conidia solitary, acicular, straight to curved,
47145 × 23 µm (
x
= 77 × 3 µm, n = 5), 3
16-septate, hyaline, thin-walled, smooth, tip
acute, base truncate to obconically truncate; hila
12 µm wide, wall of the hila 0.3 µm wide,
thickened and darkened.
Hosts Clerodendrum fragrans var.
pleniflora Schauer and C. schmidtii C.B. Clarke
(Verbenaceae).
Distribution Africa: Ghana, Guinea,
Nigeria, Sierra Leone, Sudan, Tanzania; Asia:
Brunei, China, India, Java, Laos, Taiwan;
North America and West Indies: Cuba,
Jamaica.
Material examined Vientiane Capital,
Xaythany District, Nong Viengkham Village,
fallow forest, on leaves of Clerodendron
schmidtii, 22 April 2006 (P17); Bolikhamsai
Province, Lak 20 District, Nongxong Village,
on leaves of C. schmidtii, 28 August 2008, P.
Phengsintham (363).
Notes Chupp (1954), based on an
examination of type material, described
Cercospora volkameriae as lacking stromata. In
the collections from Laos, well-developed
stromata are, however, present.
Morphologically this species belongs to the
Cercospora apii complex, characterized by
having long, brown conidiophores and long,
acicular, pluriseptate, hyaline conidia (Crous &
Braun 2003).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 54 Cercospora volkameriae from
Clerodendron schmidtii: 14. Conidiophores.
5. Stroma with attached conidiophores. 610.
Conidia. Bar = 10 µm.
Fig. 55 Cercospora volkameriae on
Clerodendron schmidtii: 12. Lesions on host
leaves (1. upper surface, 2. lower surface). 3.
Stromata. 45. Stromata with attached
conidiophores. 610. Conidiophores. 1112.
Conidia. 13. Base of conidium. Bars 12 = 10
mm, 313 = 10 µm.
Literature Saccardo (1913:1424),
Chupp (1954: 597), Vasudeva (1963: 212), Ellis
(1976: 292), Hsieh & Goh (1990: 346), Braun
(2000: 74), Shin & Kim (2001: 107), Crous &
Braun (2003: 428).
(28) Cercospora zinniae Ellis & G. Martin, J.
Mycol. 1: 20, 1885. Figs 5657.
= Cercospora atricincta Heald & F.A.
Wolf, Mycologia 3: 14, 1911.
= Cercosporina zinniae Takah. & Yosh.,
Pl. Protect. Tokyo 7: 17, 1953.
(= Cercospora apii s. lat.).
Leaf spots angular to irregular, 13 mm
diam., reddish brown to grey- brown in the
centre, with yellowish to pale brown margin.
Caespituli amphigenous, scattered, dark brown.
Mycelium internal; hyphae branched, 24 µm
wide (
x
= 3 µm, n = 9), septate, constricted at
the septa, distance between septa 510 µm (
x
=
9 µm, n = 9), brownish or green-hyaline, wall
0.30.5 µm wide (
x
= 0.49 µm, n = 9), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata lacking to well
developed, oval to ellipsoidal, substomatal, 10
20 µm diam. (
x
= 16.3 µm, n = 4), brown,
composed of swollen hyphal cells, subglobose,
rounded and angular in outline, 510 µm wide
(
x
= 5.5 µm, n = 30), brown to dark brown,
wall 0.50.8 µm wide (
x
= 0.62 µm, n = 30),
smooth. Conidiophores solitary or fasciculate,
arising from stromata (210 per fascicle),
emerging through stomata, unbranched, straight
to curved, cylindrical, 3295 × 46 µm (
x
=
77.6 × 5.14 µm, n = 7), 17-septate, distance
between septa 1225 µm (
x
= 16.6 µm, n =
18), medium brown, paler at the apex, wall 0.5
0.8 µm wide (
x
= 0.7 µm, n = 18), smooth, 01
times geniculate, width uniform. Conidiogenous
cells integrated, terminal, cylindrical, 1425 ×
45 µm (
x
= 19 × 4.4 µm, n = 12), pale brown;
conidiogenous loci conspicuous, subcircular, 1
3 µm wide (
x
= 2 µm, n = 10), dark brown,
wall 0.50.8 µm thick (
x
= 0.56 µm, n = 10).
Conidia solitary, acicular, straight to curved,
30102 × 23 µm (
x
= 72 × 2.4 µm, n = 12),
39-septate, hyaline, thin-walled, smooth, tip
acute, base truncate to obconically truncate, hila
thickened and darkened, 1.53 µm wide (
x
=
2.2 µm, n = 12), wall of the hila 0.30.5 µm (
x
= 0.34 µm, n = 12) thick.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Hosts Cosmos sp., Zinnia elegans
Jack., Z. multiflora L., Z. pauciflora L., Z.
peruviana L., Z. violacea Cav., Zinnia sp.
(Asteraceae).
Distribution Africa: Ghana, Malawi,
Mauritius, Nigeria, Tanzania, Togo, South
Africa, Sudan, Uganda, Zambia, Zimbabwe;
Asia: Bangladesh, Bhutan, Brunei, China,
Hong Kong, India, Indonesia, Laos, Malaysia,
Japan, Korea, Myanmar, Nepal, Pakistan,
Philippines, Singapore, Taiwan; Europe:
Lithuania; North America and West Indies:
Cuba, Dominican Republic, El Salvador,
Guatemala, Haiti, Jamaica, Mexico, Panama,
Puerto Rico, Trinidad & Tobago, USA (AI, CO,
FL, IN, KS, MS, NC, PA, SC, SE states, TX);
Oceania: American Samoa, Cook Islands, Fiji,
Guam, Micronesia, New Caledonia, Papua New
Guinea, Samoa, Solomon Islands, Tonga,
Tuvalu, Vanuatu, Virgin Islands; South
America: Brazil, Colombia, Venezuela.
Material examined Luang Prabang
Province, Nan District, Phonhin Village, on
leaves of Zinnia elegans, July 2006, P.
Phengsintham (P82).
Notes The collection from Laos agrees
with the description of Cercospora zinniae
published by Chupp (1954).
Literature Saccardo (1886, 443; 1931,
873), Chupp (1954: 186), Vasudeva (1963:
216), Katsuki (1965: 24), Ellis (1976: 252),
Shin & Kim (201: 111), Crous & Braun (2003:
434).
Fig. 56 Cercospora zinniae from Zinnia
elegans: 1. Stroma with attached
conidiophore. 24. Conidiophores. 58.
Conidia. Bar = 10 µm.
Fig. 57 Cercospora zinniae from Zinnia
elegans: 12. Lesions on host leaves (1. upper
surface, 2. lower surface). 3. Caespituli. 47.
Conidiophores. 812. Conidia. Bars 12 = 10
mm, 412 = 10 µm.
(29) Passalora aenea (Cif.) U. Braun & Crous,
in Crous & Braun, CBS Biodiversity Series 1:
46, 2003. Figs 5859.
Berteromyces aeneus Cif., Sydowia 8:
267, 1954.
= Cercospora cassiae Henn., Bull.
Herb. Boissier 1: 121, 1893, non Passalora
cassiae Syd., 1939.
Cercosporidium cassiae (Henn.)
Deighton, Mycol. Pap. 112: 66, 1967.
Phaeoisariopsis cassiae (Henn.) Arx,
Proc. K. Ned. Akad. Wet., C 86: 43, 1983.
Passalora cassiae (Henn.) Poonam
Srivast, J. Living World 1: 114, 1994 (nom.
inval. et illeg.).
Passalora cassiae (Henn.) U. Braun,
Mikol. Fitopatol. 30: 6, 1996 (nom. illeg.).
= Cercospora cassiicola Roum, Fungi
sel. exs. No 4486, 1888.
Leaf spots subcircular to irregular,
zonate spots, 15 mm diam., brown or dark
brown in the centre, and with dark brown
margin. Caespituli hypophyllous, scattered.
Mycelium internal, inconspicuous. Stromata
oval or ellipsoidal, 1035 µm diam. (
x
= 23.72
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
81
µm, n = 11), dark brown, stromatal cells
angular in outline, 47 µm wide (
x
= 5.83 µm,
n = 30), wall 0.30.8 µm (
x
= 0.64 µm, n =
30), smooth. Conidiophores densely fasciculate,
arising from stromata (17 per fascicle),
emerging through stromata, unbranched, not
geniculate, mostly short, cylindrical, 15140 ×
35 µm (
x
= 58.6 × 4.26 µm, n = 19), 35-
septate, distance between septa 640 µm (
x
=
20.6 µm, n = 30), uniformly pale to medium
olivaceous-brown, wall 0.51 µm wide (
x
=
0.78 µm, n = 30), smooth. Conidiogenous cells
terminal, cylindrical, 1740 × 35 µm (
x
=
24.5 × 4 µm, n = 17); conidiogenous loci small,
at the apex, conspicuous, ovoid to oval, 1.52
µm wide (
x
= 1.83, n = 17), slightly thickened,
but distinctly darkened, wall 0.50.8 µm thick
(
x
= 0.7 µm, n = 17). Conidia solitary,
obclavate or cylindrical, straight to curved, 19
53 × 46 µm (
x
= 40.8 × 5.12 µm, n = 30), 2
5-septate, pale olivaceous brown, wall 0.51
µm thick (
x
= 0.74 µm, n = 30), smooth, tip
subobtuse, base obconic to somewhat
obconically truncate, 1.53 µm wide (
x
= 2.16
µm, n = 30), wall of the hila 0.51 µm (
x
=
0.64 µm, n = 30), somewhat thickened and
darkened.
Hosts Cassia fistula L., C. floribunda
Cav., C. goratensis Fresen., C. grandis L. f., C.
javanica L., C. leptocarpa Benth., C.
marylandica L., C. Cassia sp., Chamaecrista
nictitans (L.) Moench, Senna alata (L.) Roxb.,
S. bicapsularis (L.) Roxb., S. hirsuta (L.) H.S.
Irwin & Barneby, S. macranthera (DC. ex
Collad.) H.S. Irwin & Barneby, S. occidentalis
(L.) Link, S. petersiana (Bolle) Lock, S.
septemtrionalis (Viv.) H. S. Irwin & Barneby,
S. siamae Lamk. (Fabaceae).
Distribution Africa: Ethiopia,
Tanzania, Uganda, Zambia; Asia: India, Laos,
Thailand; North America and West Indies:
Barbador, Jamaica, USA (MO); South
America: Brazil, Colombia.
Material examined Vientiane Capital,
Xaythany District, Xay Village, Village area,
on leaves of Cassia siamea, 28 December 2008,
P. Phengsintham (P399).
Notes The conidiophores are 15140 ×
35 µm and conidia are 1953 × 46 µm in the
collection from Laos, which is narrower than
    s (1954) original
description [conidiophores 4657 × 712 µm
and conidia 6075 × 69 µm]. This species is
well characterized by having rather wide
clavate conidiophores in compact fascicles.
Literature Chupp (1954: 290),
Deighton (1976: 66), Ellis (1976: 269), Crous
& Braun (2003: 46).
Fig. 58 Passalora aenea on Cassia
siamea: 13. Conidiophores. 49. Conidia.
Bar = 10 µm.
Fig. 59 Passalora aenea on Cassia siamea: 1.
Lesions on host leaf (upper surface). 2. Stroma
with attached conidiophores. 35.
Conidiophores. 611. Conidia. Bars 1 = 10 mm,
211 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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(30) Passalora bougainvilleae (Munt.-Cvetk.)
R.F. Castañeda & U. Braun, Cryptog. Bot. 2:
291, 1991. Figs 6061.
Cercospora bougainvilleae Munt.-
Cvetk., Revista Argent. Agron. 24: 84, 1957
Cercosporidium bouganvilleae
(Munt.-Cvetk.) Sobers & C.P. Seymour, Proc.

Leaf spots circular to irregular, 15 mm
diam., pale brown or white in the centre, and
with dark brown margin. Caespituli
hypophyllous, inconspicuous. Mycelium
internal; hyphae branched, 23 µm wide,
septate, constricted at the septa, distance
between septa 1113 µm, subhyaline, wall
smooth. Stromata oval or ellipsoidal, 1545 µm
diam. (
x
= 28 µm, n = 9), dark brown,
stromatal cells angular in outline, 510 µm
wide (
x
= 7.67 µm, n = 12), wall 0.81 µm (
x
= 0.95 µm, n = 12), smooth. Conidiophores
fasciculate, arising from stromata (1424 per
fascicle), emerging through stromata, not
branched, not geniculate, mostly short,
cylindrical, 1263 × 46 µm (
x
= 31.87 × 4.97
µm, n = 30), 02-septate, distance between
septa 816 µm (
x
= 11 µm, n = 6), uniformly
pale to medium olivaceous-brown, wall 0.50.7
µm wide (
x
= 0.57 µm, n = 9), smooth.
Conidiogenous cells integrated, terminal,
cylindrical, 1235 × 56 µm (
x
= 20 × 5 µm, n
= 8); conidiogenous loci small, at the apex,
conspicuous, ovoid to oval, 13 µm (
x
= 2 µm,
n = 21), slightly thickened, but distinctly
darkened, wall 0.50.9 µm wide (
x
= 0.68 µm,
n = 21). Conidia solitary, obclavate or
cylindrical, straight to curved, 665 × 4.56 µm
(
x
= 43 × 5.87 µm, n = 30), 24-septate, pale
olivaceous brown, wall 0.51 µm wide (
x
=
0.78 µm, n = 30), smooth, tip subobtuse, base
obconic, hila 13 µm wide (
x
= 1.9 µm, n = 6),
wall 0.51 µm (
x
= 0.7 µm, n = 6), thickened
and darkened.
Colonies on PDA after 3 weeks at 25°C
with white-grey in the centre, and dark grey at
the margin, reaching 4 mm diam., hyphae 28
µm wide (
x
= 4.23 µm, n = 30), septate,
constricted at the septa, distances between septa
710 µm (
x
= 13.4 µm, n = 30), hyaline or
brownish, wall 0.31 µm (
x
= 0.65 µm, n =
10), smooth. Conidia not formed in culture.
Hosts Bougainvillea glabra Choisy, B.
spectabilis Willd. (Nyctaginaceae).
Distribution Asia: Brunei, China,
India, Indonesia, Japan, Laos, Thailand; North
America and West Indies: Cuba, El Salvador,
Jamaica, USA (FL, HI); South America:
Argentina, Brazil, Venezuela.
Material examined Vientiane Capital,
Xaythany District, Dong Dok Village, on leaves
of Bougainvillea spectabilis, 15 April 2006, P.
Phengsintham (P05); Vientiane Province, Home
District, Houay Xay Village, on leaves of B.
spectabilis, 28 May 2009, P. Phengsintham
(P411).
Notes On account of conspicuous,
slightly thickened and somewhat darkened
conidiogenous loci and conidial hila, the
collections from Laos clearly belong to
Passalora bougainvilleae. In the collections
from Laos, the conidia are quite smooth-walled,
differing from Ellis (1976) who described
minutely verruculose conidia. However, conidia
of this species are at first smooth and may turn
asperulate with age.
Literature Ellis (1976: 297), Crous &
Braun (2003: 86).
Fig. 60 Passalora bougainvilleae on
Bougainvillea spectabilis: 1. Stroma. 2.
Stroma with Conidiophore. 3. Conidiophore.
4. Conidiophore with attached young
conidium. 59. Conidia. Bar = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 61 Passalora bougainvilleae from
Bougainvillea spectabilis from leaf spots: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Stroma with attached
conidiophores. 45. Conidiophores. 6.
Conidiophore with attached Conidium. 710.
Conidia. 1112. Culture. Bars 12, 11 = 10
mm, 310 = 10 µm.
(31) Passalora capsicicola (Vassiljevsky) U.
Braun & F.O. Freire, Cryptog. Mycol. 23: 299,
2002. Figs 6263.
Cercospora capsicicola Vassiljevsky,
in Vassiljevsky & Karakulin, Fungi imperfecti
parasitici, 1, Hyphomycetes: 344, 1937.
Phaeoramularia capsicicola
(Vassiljevsky) Deighton, in Ellis, More
Dermatiaceous Hyphomycetes: 323, 1976.
Phaeoramularia capsicicola
(Vassiljevsky) Deighton, Trans. Brit. Mycol.
Soc. 67: 140, 1976.
= Cercospora capsici E.J. Marchal &
Stayaert, Bull. Soc. Roy. Bot. Belgique 61: 167,
1929.
Cladosporium capsici Kovatch., Z.
Pflanzenkr. 48: 321, 1938.
= Cercospora capsici Unamuno, Bol.
Soc. Esp. Hist. Nat. 32: 161, 1932.
= Cercospora unamunoi Castell.,
Revista Agric. Subtrop. Trop. 42: 20, 1948.
= Phaeoramularia unamunoi (Castell.)
Munt.-Cvetk., Lilloa. 30: 183, 1960.
Leaf spots circular to slightly irregular,
18 mm diam., dark brown in the centre, dark
brown to yellowish margin. Caespituli
amphigenous, inconspicuous. Mycelium
internal; internal hyphae branched, 23 µm
wide (
x
= 2.5 µm, n = 8), septate, constricted at
the septa, distances between septa 518 µm (
x
= 9.75 µm, n = 8), subhyaline, wall 0.30.5 µm
wide (
x
= 0.4 µm, n = 8), smooth. Stromata
substomatal, intraepidermal, ellipsoidal, 1750
µm diam. (
x
= 36.3 µm, n = 9), brown,
stromatal cells 59 µm diam. (
x
= 7 µm, n =
10), wall 0.50.8 µm wide (
x
= 0.53 µm, n =
10), smooth. Conidiophores fasciculate, arising
from stromata (15 per fascicle), or born on
external mycelium, unbranched, 01 geniculate,
cylindrical, straight to curved, 1334 × 46 µm
(
x
= 23.3 × 5 µm, n = 10), 01-septate,
distance between septa 525 µm (
x
= 14 µm, n
= 14), pale brown or olivaceous-brown; wall
0.50.8 µm wide (
x
= 0.52 µm, n = 14),
smooth. Conidiogenous cells integrated,
terminal, cylindrical, tapering to the apex, 10
20 × 45 µm (
x
= 16.7 × 4.5 µm, n = 6);
conidiogenous loci (scars) small, slightly
thickened and darkened, 12 µm diam. (
x
=
1.42 µm, n = 6); wall of the loci 0.50.8 µm
thick (
x
= 0.5 µm, n = 7). Conidia solitary or
catenate, cylindrical or narrowly obclavate,
straight to curved, 1492 × 36 µm (
x
= 44.07
× 4.28 µm, n = 14), 09-septate, slightly
constricted at the septa, subhyaline or
olivaceous-brown, wall 0.30.5 µm thick (
x
=
0.47 µm, n = 14); apex subobtuse, 1.52 µm
wide (
x
= 1.58 µm, n = 6), wall of the hila 0.3
0.5 µm wide (
x
= 0.46 µm, n = 6), darkened;
based long obconically truncate, hila 1.52 µm
wide (
x
= 1.9 µm, n = 14), wall of the hila 0.3
0.5 µm wide (
x
= 0.48 µm, n = 14), darkened.
Colonies on PDA after 3 weeks at 25°C
white to grey in the centre, margin dark grey,
reaching 36 mm diam., hyphae 14(5) µm
wide (
x
= 1.9 µm, n = 30), septate, distance
between septa 519 µm (
x
= 12.37 µm, n =
30), primary mycelium brownish, but the
second and following ones hyaline, wall
smooth. Conidia not formed in culture.
Hosts Capsicum annuum L., C.
frutescens L., C. grossum L., Capsicum sp.
(Solanaceae).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Distribution Africa: Congo, Ethiopia,
Ghana, Kenya, Malawi, Mauritius, Morocco,
Nigeria, Senegal, Sierra Leone, Somalia, Sudan,
Tanzania, Uganda, Zambia, Zimbabwe; Asia:
Cambodia, China, India, Indonesia, Jordan,
Laos, Malaysia, Myanmar, Nepal, Thailand,
Yemen; Europe: Romania; North America
and West Indies: French Antilles, Jamaica,
Panama, USA (CA, FL, GA, TX); South
America: Argentina, Brazil.
Material examined Xiengkhouang
Province, Paek District, Phonsavan Village,
garden, on leaves of Capsicum annuum, 3
January 2010, P. Phengsintham (P513).
Notes The collection from Laos is
similar to the description of Passalora
capsicicola in Ellis (1976) [conidiophores up to
70 × 35 µm and conidia 1780 × 35 µm].
Literature Saccardo (1971: 1336),
Chupp (1954: 552), Vadsudeva (1963: 206),
Ellis (1976: 323), Crous & Braun (2003: 103).
Fig. 62 Passalora capsicicola on Capsicum
annuum: 1. Stroma with attached conidiophores.
23. Conidiophore. 49. Conidia. Bar = 10 µm.
Fig. 63 Passalora capsicicola on Capsicum
annuum on host leaf: 1. Lesions on host leaf
(upper surface). 3. Caespituli. 4. Stroma with
attached conidiophores. 59. Conidia. Bars 12
= 10 mm, 49 = 10 µm.
(32) Passalora dipterocarpi Phengsintham,
Chukeatirote, Abdelsalam, K.D. Hyde & U.
Braun, Cryptog.. Mycol. 31(2): 167, 2010. Figs
6465. Leaf spots circular to slightly irregular,
27 mm diam., at first reddish, later becoming
dark brown in the centre, the oldest leaf spots
having a grey to reddish margin. Caespituli
amphigenous, inconspicuous. Mycelium
internal and external. Internal hyphae branched,
13 µm wide (
x
= 2 µm, n = 17), septate,
constricted at the septa, distances between septa
410 µm (
x
= 6.47 µm, n = 17), subhyaline,
wall 0.50.8 µm wide (
x
= 0.63 µm, n = 17),
smooth; external hyphae, branched, 25 µm
wide (
x
= 2.60 µm, n = 30), septate, constricted
at the septa, distance between septa 419 µm
(
x
= 10.1 µm, n = 30), brownish to dark brown,
wall 0.30.9 µm wide (
x
= 0.63 µm, n = 30),
smooth. Stromata substomatal, intraepidermal,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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ellipsoidal, 1545 µm diam. (
x
= 27.27 µm, n =
15) brown, stromatal cells 37 µm diam. (
x
=
4.9 µm, n = 30), wall 0.50.8 µm wide (
x
=
0.69 µm, n = 30), smooth. Conidiophores single
or fasciculate, arising from stromata (112 per
fascicle), or born on external mycelium,
unbranched or branched, 01 geniculate,
cylindrical, straight to curved, (9)1448(67)
× (2)34 µm (
x
= 27 × 3.3 µm, n = 30), 19-
septate, distance between septa 410 µm (
x
=
6.7 µm, n = 30), pale brown or olivaceous-
brown; wall 0.30.9 µm wide (
x
= 0.70 µm, n
= 25), smooth. Conidiogenous cells intergratae,
terminal, cylindrical, tapering to the apex, 510
× 24 µm (
x
= 6,55 × 2.95 µm, n = 22);
conidiogenous loci (scars) small, thickened and
slightly darkened, 12 µm diam., wall of the
loci approximately 0.8 µm thick. Conidia
solitary or caternate, cylindrical or narrowly
obclavate, straight to curved, 430(36) × (1
)25 µm (
x
= 15.33 × 2.71 µm, n = 30), 05-
sepate, slightly constricted at the septa,
subhyaline or olivaceous brown, wall 0.251
µm thick (
x
= 0.57 µm, n = 30), apex
subobtuse, based long obconically truncate, hila
0.82 µm wide (
x
= 1.2 µm, n = 14), wall of
the hila 0.61 µm wide (
x
= 0.86 µm, n = 14),
darkened.
Colonies on PDA after 3 weeks at 25°C
whitegrey in the centre, margin dark grey,
reaching 36 mm diam., hyphae 15 µm wide
(
x
= 1.9 µm, n = 30), septate, distances
between septa 519 µm (
x
= 12.37 µm, n =
30), primary mycelium brownish, but the
second and following ones hyaline, wall
smooth. Conidia not formed in culture.
Hosts Dipterocarpus alatus Roxb., D.
obtusifolius Teijsm. ex Miq.
(Dipterocarpaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Dipterocarpus alatus, rice paddy area, 19 April
2006, P. Phengsintham (P11, MFLU12-2198,
holotype); same locality and collector, on
leaves of D. obtusifolius, 8 August 2006, P.
Phengsintham (P129, paratype).
Notes Several cercosporoid
hyphomycete species are known from hosts of
the Dipterocarpaceae, but all of them have been
described from Shorea spp. and belong in the
genera Pseudocercospora (conidiogenous loci
inconspicuous, unthickened, not darkened) and
Stenella (verruculose superficial mycelium),
viz., Pseudocercospora shoreae-robustae U.
Braun (1995) [ Pseudocercosporella shoreae
A.N. Rai, B. Rai & Kamal], Stenella shoreae
M.K. Khan & Kamal (Khan et al. 1995) and S.
shoreicola Crous & U. Braun (2003) [
Cercospora shoreae Thirum. & Chupp,
Pseudocercospora shoreae (Thirum. & Chupp)
Deighton, Stenella shoreae (Thirum. & Chupp)
Crous & U. Braun, non M.K. Khan & Kamal
1995]. The new species on Dipterocarpus spp.
from Laos belongs, however, in Passalora,
characterized by having smooth mycelium,
conspicuous conidiogenous loci and pigmented
conidia.
Literature Braun (1995), Khan et al.
(1995), Crous & Braun (2003).
Fig. 64 Passalora dipterocarpi on
Dipterocarpus alatus: 1. Stroma with attached
conidiophores. 2. Stroma with attached
conidiophores and conidia. 3. External hypha
with attached young conidiophores. 5.
Conidiophore. 617. Conidia. Bar = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 65 Passalora dipterocarpi on
Dipterocarpus alatus from leaf spots: 1.
Lesions on host leaf (upper surface). 2. Stroma
with attached conidiophoes. 37.
Conidiophores. 810. Conidia. 11. Culture.
Bars 1, 11 = 10 mm, 36 = 10 µm.
(33) Passalora erythrinae (Ellis & Everh.) U.
Braun & Crous, CBS Biodiversity Series 1:
176, 2003. Figs 6667.
Cercospora erythrinae Ellis & Everh.,
J. Mycol. 3: 18, 1888.
Leaf spots subcircular to irregular,
zonate spots, 13 mm diam., pale brown or dark
brown in the centre, and with yellow-brown
margin. Caespituli hypophyllous, scattered.
Mycelium internal, inconspicuous. Stromata
oval or ellipsoidal, up to 40 µm diam., dark
brown. Conidiophores densely fasciculate,
arising from stromata (up to 17 per fascicle),
emerging through stromata, unbranched, not
geniculate, mostly short, cylindrical, 1854 ×
46 µm (
x
= 36.67 × 4.67 µm, n = 5), 01-
septate, distance between septa 519 µm (
x
=
10.5 µm, n = 6), uniformly pale to medium
olivaceous-brown, wall 0.50.8 µm wide (
x
=
0.60 µm, n = 5), smooth. Conidiogenous cells
terminal, cylindrical, 13 × 5 µm; conidiogenous
loci small, at the apex, conspicuous, ovoid to
oval, 2 µm wide, slightly thickened, but
distinctly darkened, wall 0.81 µm thick (
x
=
0.9 µm, n = 5). Conidia solitary, obclavate or
cylindrical, straight to curved, 4358 × 45 µm
(
x
= 50.29 × 4.86 µm, n = 8), 03-septate, pale
olivaceous brown, wall 0.50.8 µm thick (
x
=
0.6 µm, n = 8), smooth, tip subobtuse, base
obconic, 23 µm wide (
x
= 2.2 µm, n = 8), wall
of the hila 0.81 µm (
x
= 0.9 µm, n = 8),
somewhat thickened and darkened.
Hosts Erythrina crista-galli L. and E.
stricta Roxb. (Fabaceae).
Distribution Asia: Laos; North
America: USA (FL, LA, TX).
Material examined Vientiane Capital,
Xaythany District, Xay Village, garden, on
leaves of Erythrina stricta, 27 April 2006, P.
Phengsintham (P27).
Notes This species is characterized by
having conspicuous conidiogenous loci and
narrowly obclavate, subhyaline to pale
olivaceous conidia (Crous & Braun 2003). The
Laos collection is similar to the description of
Passalora erythrinae in Ellis (1976)
[conidiophores 3050 × 35 µm and conidia
2255× 33.5 µm, 25-septate].
Literature Chupp (1954: 305), Ellis (1976:
269), Crous & Braun (2003: 176).
Fig. 66 Passalora erytrinae on Erytrina
stricta: 13. Conidiophores. 49. Conidia. Bar
= 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 67 Passalora erythrinae on Erytrina
stricta: 1. Lesions on host leaf (upper surface).
2. Stroma with attached conidiophores. 35.
Conidiophores. 611. Conidia. Bars 1 = 10 mm,
211 = 10 µm.
(34) Passalora haldinae C. Nakash. &
Meeboon [as 'haldiniae'], in Nakashima,
Meeboon, Motohashi & To-anun, Fungal
Diversity 26(1): 259, 2007. Figs 6869.
Leaf spots circular to irregular, 224
mm diam. (
x
= 9 mm, n = 18), pale olivaceous
in the centre, and with dark olivaceous margin.
Caespituli inconspicuous. Mycelium internal
not seen; External hyphae branched, 45 µm
wide, septate, constricted at the septa, distances
between septa 515 µm, subhyaline, wall
smooth. Stromata oval or ellipsoidal, up to 32
µm diam. (
x
= 28 µm, n = 9), dark brown,
stromatal cells angular in outline, 510 µm
wide (
x
= 7.67 µm, n = 12), wall 0.81 µm (
x
= 0.95 µm, n = 12), smooth. Conidiophores
fasciculate, arising from stomata (17 per
fascicle) and solitary borne on external mycelial
hyphae, unbranched, 01-geniculate,
cylindrical, 1270 × 25 µm (
x
= 31 × 3 µm, n
= 16), 18-septate, distance between septa 510
µm (
x
= 8 µm, n = 9), uniformly pale to
medium olivaceous-brown, wall 0.30.5 µm
wide (
x
= 0.45 µm, n = 12), smooth.
Conidiogenous cells integrated, terminal,
cylindrical, 521 × 23 µm (
x
= 11.8 × 2.4 µm,
n = 5); conidiogenous loci small, at the apex,
conspicuous, ovoid to oval, slightly thickened,
but distinctly darkened. Conidia solitary,
obclavate or cylindrical, straight to curved, 65
70 × 23 µm (
x
= 67.5 × 2.3 µm, n = 3), 34-
septate, pale olivaceous-brown, wall 0.3 µm
wide, smooth, tip subobtuse, base obconic, hila
12 µm wide (
x
= 1.3 µm, n = 3), wall 0.3 µm
(
x
= 0.3 µm, n = 3), thickened and darkened.
Colonies on PDA after 3 weeks at 25 °C
with white-grey in the centre, and dark grey at
the margin, reaching 4 mm diam.
Hosts Haldina cordifolia (Roxb.)
Ridsdale (Rubiaceae).
Distribution Asia: Laos, Thailand.
Material examined Vientiane Capital,
Xaythany District, Dong Makkhai Village, on
leaves of Haldina cordifolia, dry dipterocarp
forest, 20 May 2006, P. Phengsintham (P53);
ibid., 9 December 2008, P. Phengsintham
(P382). GenBank accession no (ITS,
KC677893; LSU, KC677925).
Notes The Laos collections agree with
the description of Passalora haldiniae in
Nakashima et al. (2007) [conidiophores 1563
× 2.83.6 µm and conidia 2480 × 2.75 µm],
but the material from Laos differs in having
smaller stromata (up to 32 µm diam.).
Literature Nakashima et al. (2007:
257270).
(35) Passalora helicteris-viscidae
Phengsintham, Chukeatirote, Abdelsalam, K.D.
Hyde & U. Braun, Cryptog. Mycol. 31(2): 171,
2010. Figs 7071.
Leaf spots circular to irregular, 15 mm
diam., reddish brown to medium brown in the
centre, and with a brown to dark brown margin.
Caespituli amphigenous, scattered. Mycelium
internal, inconspicuous. Stromata lacking or
moderately developed, substomatal,
subglobular, 824 µm diam. (
x
= 15 µm, n =
4), brown to dark brown, stroma cells oval,
ellipsoidal to angular in outline, 510 µm wide
(
x
= 7.14 µm, n = 7), dark brown, wall 0.81
µm wide (
x
= 0.93 µm, n = 7), smooth.
Conidiophores fasciculate, arising from
stromata (26 per fascicle), erect, straight or
curved, unbranched or branched, 2258 × 46
µm (
x
= 43.7 × 4.75 µm, n = 12), 04-septate,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 68 Passalora haldiniae on Haldina
cordifolia: 1. Stroma with Conidiophore. 2.
Conidiophores. 3. Conidiophore with attached
young Conidium. 4. Conidiophore, 56.
Conidia. Bar = 10 µm.
Fig. 69 Passalora haldiniae from Haldina
cordifolia from leaf spots: 12. Lesions on host
leaves (1. upper surface, 2. lower surface). 3.
Stroma with attached conidiophores. 410.
Conidiophores. 1112. Conidia. Bars 12 = 10
mm, 312 = 10 µm.
distance between septa 523 µm (
x
= 14.9 µm,
n = 18), pale to moderately olivaceous-brown,
wall 0.50.8 µm wide (
x
= 0.55 µm, n = 12),
smooth. Conidiogenous cells integrated, 1220
× 34 µm (
x
= 15.4 × 3.5 µm, n = 8), apex 12
µm wide, wall 0.8 µm thick, subtruncate,
cicatrized, pale olivaceous or brown;
conidiogenous loci conspicuous, 12 µm wide
(
x
= 1.5 µm, n = 8), wall 0.30.8 µm wide (
x
= 0.52 µm, n = 8), smooth. Conidia solitary or
catenate, cylindrical, straight to moderately
curved, (8)1044 × 13 µm (
x
= 21.7 × 1.93
µm, n = 30), 04-septate, slightly constricted at
the septa, pale olivaceous, wall 0.20.3 µm
wide (
x
= 0.25 µm, n = 30), smooth or finely
verruculose, both ends subtruncate when
catenate, bluntly rounded at the apex in solitary
and primary conidia, apical hila 11.5 µm wide
(
x
= 1.76 µm, n = 22), wall 0.30.5 µm (
x
=
0.32 µm, n = 15) thick, with subtruncate base,
basal hila 0.51 µm wide (
x
= 1.87 µm, n =
22), wall 0.30.5 µm (
x
= 0.32 µm, n = 22)
thick. Colonies on PDA after 3 weeks at 25°C
black in the centre and margin, reaching 26
mm diam., hyphae 27 µm wide (
x
= 3.3 µm, n
= 30), septate, distance between septa 432 µm
(
x
= 13.8 µm, n = 30), primary mycelium
brownish, but the second and following ones
hyaline, wall smooth. Conidia not formed in
culture.
Hosts Helicteres viscida Blume
(Malvaceae).
Distribution Asia: Laos
Material examined Vientiane Capital,
Xaythany District, Nongviengkham Village, on
leaves of Helicteres viscida, fallow forest, 14
May 2006, P. Phengsintham (P47, MFLU12-
2199, holotype); ibid., Houay Ngang, fallow
forest, 17 July 2009, P. Phengsintham (P414).
GenBank accession no (ITS, KC677894; LSU,
KC677926).
Notes Several species of Passalora on
Sterculia spp. are known. P. sterculiacearum U.
Braun & Crous ( Cercospora helicteris Syd. &
P. Syd., Cercosporina helicteris (Syd. & P.
Syd.) Sacc., Passalora helicteris (Syd. & P.
Syd.) U. Braun & Crous, 2003, nom. illeg., non
Passalora helicteris (Soni, Dadwal &
Jamaluddin) Poonam Srivast., 1994) differs
from the new species described from Laos in
having well-developed superficial hyphae with
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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solitary narrower conidiophores
(mycovellosiella-like) and longer subhyaline
conidia, up to 120 µm in length, with up to six
septa (Chupp 1954, Crous & Braun 2003,
Braun & Crous 2007). Passalora meridiniana
(Chupp) U. Braun & Crous is a phaeoramularia-
like species with densely fasciculate
conidiophores in coremioid conidiomata and
much longer conidia, up to 125 µm in length
(Chupp 1954, Crous & Braun 2003). Passalora
helicteris is easily distinguishable from the new
species by its much longer conidiophores, up to
450 µm, and much wider conidia, 2050 × 7.5
12.5 µm, formed singly (Soni et al. 1984, Crous
& Braun 2003).
Literature Crous & Braun (2003: key).
Fig. 70 Passalora helicteris-viscidae on
Helicteres viscida: 1. Stroma with attached
conidiophores. 27. Conidia. Bar = 10 µm.
(36) Passalora henningsii ( 
& U. Braun, Cryptog. Bot. 1(1): 46,
1989. Figs 7273.
Cercospora henningsii Allesch., in
Engler, Pflanzenwelt Ostafrikas, Teil C: 35,
1895.
Cercospora henningsii (Allesch.)
Deighton, in Ellis, More demateaceous
hyphomycetes: 295, 1976.
Passalora henningsii (Allesch.)
Poonam Srivast., J. Living World 1: 116, 1994.
= Cercospora cassavae Ellis & Everh.,
Bull. Torrey Bot. Club. 22: 438, 1895.
= Cercospora manihotis Henn.,
Hedwigia 41: 18, 1902.
Fig. 71 Passalora helicteris-viscidae on
Helicteres viscida from leaf spots: 12. Lesions
on host leaves (1. upper surface, 2. lower
surface). 3. Caespituli. 45. Stroma with
attached conidiophores and conidium. 6.
Conidiophore; 69. Conidia.10. Culture. Bars
12, 10 = 10 mm, 49 = 10 µm.
= Cercospora cearae Petch, Ann. Roy.
Bot. Gard. Peradeniya 3: 10, 1910.
= Septogloeum manihotis Zimm.,
Centralbl. Bakteriol., Abt. 2, 8: 218, 1912.
= Helminthosporium manihotis Rangle,
Arch. Jard. Bot. Rio de Janeiro 2: 71, 1902.
Leaf spots circular to irregular, 415
mm diam., pale brown or dark brown.
Caespituli amphigenous, scattered. Mycelium
internal; hyphae branched, 36 µm wide (
x
= 4
µm, n = 9), septate, constricted at the septa,
distance between septa 520 µm (
x
= 10.33
µm, n = 9), subhyaline, wall smooth. Stromata
oval or ellipsoidal, 1740 µm diam. (
x
= 28.36
µm, n = 11), dark brown, stroma cells angular
in outline, 38 µm wide (
x
= 5.17 µm, n = 30),
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
90
wall 0.31 µm (
x
= 0.65 µm, n = 30), smooth.
Conidiophores densely fasciculate, arising from
stromata (830 per fascicle), emerging through
stromata, not branched, not geniculate, mostly
short, cylindrical, 1048 × 46 µm (
x
= 31.87
× 5.07 µm, n = 30), 02-septate, distance
between septa 526 µm (
x
= 14.4 µm, n = 30),
uniformly pale to medium olivaceous-brown,
wall 0.5-0.8 µm wide (
x
= 0.55 µm, n = 30),
smooth. Conidiogenous cells terminal,
cylindrical, 1026 × 45 µm (
x
= 19.1 × 4 µm,
n = 14); conidiogenous loci small, at the apex,
conspicuous, ovoid to oval, 12 µm wide (
x
=
1.83 µm, n = 14), slightly thickened, but
distinctly darkened, wall 0.51 µm thick (
x
=
0.91 µm, n = 30). Conidia solitary, obclavate or
cylindrical, straight to curved, 1453 × 46 µm
(
x
= 43 × 5.37 µm, n = 30), 07-septate, pale
olivaceous brown, wall 0.51 µm thick (
x
=
0.78 µm, n = 30), smooth, tip subobtuse, base
obconic, 12 µm wide (
x
= 1.87 µm, n = 19),
wall of the hila 0.51 µm (
x
= 0.9 µm, n = 19),
somewhat thickened and darkened.
Colonies on PDA after 3 weeks at 25°C
with grey to dark grey, reaching 1517 mm
diam., hyphae 29 µm wide (
x
= 5 µm, n = 20),
septate, constricted at the septa, distance
between septa 526 µm (
x
= 11.37 µm, n =
20), brownish or subhyaline, wall 0.31 µm
wide (
x
= 0.61 µm, n = 20), smooth. Conidia
not formed in culture.
Hosts Manihot glaziovii Müll. Arg.,
M. manihot (L.) H. Karst., M. piauhyensis Ule,
M. utilissima Pohl (= M. esculenta Crantz)
(Euphorbiaceae).
Distribution Africa: Angola, Congo,
Gabon, Ghana, Ivory Coast, Kenya,
Madagascar, Malawi, Mauritius, Nigeria, Sierra
Leone, Somalia, South Africa, Sudan, Taiwan,
Tanzania, Togo, Uganda, Zimbabwe; Asia:
Brunei, Cambodia, China, India, Indonesia,
Laos, Malaysia, Philippines, Singapore, Sri
Lanka, Timor. Thailand; North America and
West Indies: Antigua and Barbuda, Barbados,
Costa Rica, Cuba, Dominican Republic, El
Salvador, Haiti, Jamaica, Panama, Puerto Rico,
Trinidad and Tobago, USA (FL, HI, TX),
Virgin Islands; Australia; Oceania: Fiji,
French Polynesia, New Caledonia, Palau,
Solomon Islands, Vanuatu, Wallis and Futuna
Islands; South America: Brazil, Colombia,
Peru, Suriname, Venezuela.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Manihot utilissima, garden, 27 April 2006, P.
Phengsintham (P26); Bolikhamsay Province,
Nongsong Village, garden, on leaves of M.
utilissima, 27 July 2008, P. Phengsintham
(P327).
Notes The collection from Laos has
been compared with these species and proved to
be conspecific with Passalora heningsii as
redescribed by Castañeda & Braun (1989),
based on material from Cuba, but differs in
having 07-septate conidia (versus 13-septate
in the Cuba specimens.
Literature Chupp (1954: 220), Ellis
(1976: 295),  & Braun (1989: 46),
Hsieh & Goh (1990: 116), Crous & Braun
(2003: 215).
Fig. 72 Passalora henningsii on Manihot
utilissima: 1. Stroma with attached
conidiophores. 23. Conidiophores. 410.
Conidia. Bar = 10 µm.
(37) Passalora perfoliati (Ellis & Everh) U.
Braun & Crous, in Crous & Braun, CBS
Biodiversity Series 1: 46, 2003. Figs 7475.
Cercospora perfoliati Ellis & Everh.
J. Mycol. 5, 71, 1889.
Mycovellosiella perfoliati (Ellis &
Everh.) Munt.-Cvetk., Lilloa 30: 201, 1960.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 73 Passalora henningsii on Manihot
utilissima: 12. Lesions on host leaves (1. upper
surface, 2. lower surface). 34. Stromata with
attached conidiophores. 510. Conidia. 11.
Culture. Bars 12 = 10 mm, 410 = 10 µm.
= Cercospora agerati F. Stevens. Bull.
Bernice P. Bishop. Mus. 19: 154, 1925.
Ragnhildiana agarati (F. Stevens) F.
Stevens & Solheim, Mycologia 23: 402, 1931.
Leaf spots circular to irregular, 17 mm
diam., brown in the centre, and with dark brown
margin. Caespituli amphigenous, scattered, dark
blackish brown, hairy. Mycelium internal,
inconspicuous. Stromata substomatal,
intraepidermal, ellipsoidal, 1045 µm diam. (
x
= 25.60 µm, n = 25), brown, stromatal cells 4
10 µm diam. (
x
= 6.43 µm, n = 30), wall 0.51
µm wide (
x
= 0.65 µm, n = 30), smooth.
Conidiophores solitary or fasciculate, arising
from stromata (18 per fascicle), 15150 × 36
µm (
x
= 57.36 × 4.46 µm, n = 30), 07-septate,
unbranched, geniculate, distance between septa
732 µm (
x
= 14.26 µm, n = 30), medium
brown, paler at the apex, wall 0.51 µm wide
(
x
= 0.73 µm, n = 30), smooth. Conidiogenous
cells integrated, terminal, cylindrical, 732 × 3
5 µm (
x
= 16.52 × 3.8 µm, n = 19), wall 0.51
µm wide (
x
= 0.69 µm, n = 19), pale brown;
conidiogenous loci conspicuous, integrated,
terminal, subcircular, 12 µm wide (
x
= 1.3
µm, n = 5), dark brown, wall 0.50.8 µm thick
(
x
= 0.7 µm, n = 3). Conidia solitary,
cylindrical or fusiform, straight or slightly
fcurved, 857 × 36 µm (
x
= 34.21 × 4.10 µm,
n = 23), 04-septate, subhyaline to olivaceous-
brown or dark brown, smooth, tip rounded,
subtruncate at the ends with thickened hila, 12
µm wide (
x
= 1.3 µm, n = 5), wall of apex 0.3
0.5 µm (
x
= 0.4 µm, n = 5) thick., base truncate
12 µm wide (
x
= 1.42 µm, n = 7), wall of the
hila 0.30.5 µm (
x
= 0.47 µm, n = 7) thick.
Hosts Ageratum conyzoides L.,
Chromolaena odorata (L.) R.M. King & H.
Rob., Chromolaena sp., Eupatorium
ageratifoium DC., E. perfoliatum L., E.
purpureum L., E. repandum Willd., E. rugosum
Houtt., E. sessilifolium L., Eupotorium
sp.(Asteraceae).
Distribution Africa: Kenya, Malawi,
South Africa, Sudan, Tanzania, Uganda; Asia:
China, India, Laos, Sri Lanka, Taiwan,
Thailand; Europe: Canary Islands (Spain);
North America and West Indies: Dominican
Republic, Jamaica, Haiti, Puerto Rico, Trididad
and Tobago, USA (FL, HI, IL, MI, WI);
Oceania: New Caledonia, Papua New Guinea.
Material examined Luang Prabang
Province, Phoukhoun district, Pha Ngeng Noi
village, fallow forest, on leaves of
Chromolaena sp., 17 June 2006, P.
Phengsintham (P101).
Notes The collection from Laos differs
from Passalora perfoliati described by Hsieh &
Goh (1990) [stromata lacking, conidiophores
mostly not fasciculate but borne as branches
from the external mycelial hyphae which climb
up the leaf hairs] by well-developed stromata,
and fasciculate.
Literature Chupp (1954: 152),
Vasudeva (1963: 162), Deighton (1974: 69),
Hsieh & Goh (1990: 74).
(38) Passalora tithoniae (R.E.D. Baker & W.T.
Dale) U. Braun & Crous, in Crous & Braun,
CBS Diversity Series 1: 404, 2003. Figs 7677.
Cercospora tithoniae R.E.D. Baker &
W.T. Dale, Mycol. Pap. 33: 106, 1951.
Phaeoramularia tithoniae (R.E.D.
Baker & W.T. Dale) Deighton, in Ellis, More
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 74 Passalora perfoliati on Chromolaena
sp. from leaf spots. 1. Stromata with attached
conidiophores, 24. Conidiophores, 510.
Conidia. Bar = 10 µm.
Fig. 75 Passalora perfoliati on Chromolaena
sp. from leaf spots. 12. Lesions on host leaves
(1. upper surface, 2. lower surface), 3.
Caespituli, 45. Stromata with attached
conidiophores and young conidia, 67.
Conidiophores, 812. Conidia. Bars 12 = 10
mm, 412 = 10 µm.
dematiaceous hyphomycetes: 319, 1976.
= Cercospora tithoniae Chidd.,
Mycopathol. Mycol. Appl. 17: 80, 1962.
= Cercospora tithoniicola J.M. Yen.,
Rev. Mycol. 31: 144, 1936.
Leaf spots circular to irregular, 115
mm diam., brown to dark brown in the centre,
and with a brown margin. Caespituli
amphigenous, scattered. Mycelium internal,
conspicuous; internal hyphae branched, 23 µm
wide (
x
= 2.75 µm, n = 5), septate, constricted
at the septa, distance between septa 612 µm
(
x
= 9 µm, n = 5), brownish, subhyaline, wall
0.30.5 µm wide (
x
= 0.45 µm, n = 5), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata developed,
substomatal, subglobular, 3350 µm diam. (
x
=
42.4 µm, n = 5), brown to dark brown, stroma
cells oval, ellipsoidal to angular in outline, 514
µm wide (
x
= 8 µm, n = 24), dark brown, wall
0.50.8 µm wide (
x
= 0.7 µm, n = 24), smooth.
Conidiophores fasciculate, arising from
stromata (836 per fascicle), erect, straight or
curved, unbranched, not geniculate, 14144 ×
35 µm (
x
= 61.7 × 3.33 µm, n = 12), 15-
septate, distance between septa 523 µm (
x
=
15.9 µm, n = 20), pale to moderately
olivaceous-brown, wall 0.50.8 µm wide (
x
=
0.55 µm, n = 20), smooth. Conidiogenous cells
integrated, subtruncate, cicatrized, 923 × 34
µm (
x
= 17.1 × 3.1 µm, n = 9), pale olivaceous
or brown; conidiogenous loci conspicuous, 12
µm wide (
x
= 1.7 µm, n = 5), wall 0.50.8 µm
wide (
x
= 0.56 µm, n = 5), smooth. Conidia
solitary or catenate, cylindrical, straight to
moderately curved, 1775 × 36 µm (
x
= 32.23
× 3.46 µm, n = 20), 03-septate, slightly
constricted at the septa, pale olivaceous, wall
0.30.5 µm wide (
x
= 0.33 µm, n = 20),
smooth or finely verruculose, both ends
subtruncate when catenate, bluntly rounded at
the apex in solitary and primary conidia, apical
hila 1.52 µm wide (
x
= 1.54 µm, n = 10), wall
0.30.5 µm (
x
= 0.36 µm, n = 10) thick, with
subtruncate base; basal hila 1.52 µm wide (
x
= 1.55 µm, n = 20), wall 0.30.5 µm (
x
= 0.35
µm, n = 20) thick.
Colonies on PDA after 3 weeks at 25°C
with grey to dark grey, reaching 1018 mm
diam., hyphae 25 µm wide (
x
= 53.53 µm, n =
26), septate, constricted at the septa, distance
between septa 620 µm (
x
= 15.46 µm, n =
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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26), brownish or subhyaline, wall 0.30.8 µm
wide (
x
= 0.60 µm, n = 26), smooth. Conidia
solitary or catenate, cylindrical, straight to
moderately curved, 935 × 35 µm (
x
= 20.72
× 3.72 µm, n = 11), 02-septate, slightly
constricted at the septa, pale olivaceous, wall
0.30.5 µm wide (
x
= 0.46 µm, n = 11) thick;
apical hila 12 µm wide (
x
= 1.66 µm, n = 5),
wall 0.30.5 µm (
x
= 0.43 µm, n = 5) thick,
with subtruncate base; basal hila 0.52 µm wide
(
x
= 1.63 µm, n = 11), wall 0.30.5 µm (
x
=
0.42 µm, n = 11) thick.
Hosts Tithonia diversifolia (Hemsl.)
A. Grey, T. speciosa (Hook.) Hook. ex Griseb.,
T. tagetiflora Lam., Viguera dentata (Cav.)
Spreng. (Asteraceae).
Distribution Africa: Ivory Coast,
Mauritius; Asia: Hong Kong, India, Laos,
Singapore, Taiwan; North America and West
Indies: Barbados, Cuba, Trinidad and Tobago.
Material examined Luangnamtha
Province, Luangnamtha District, Chaleunsouk
Village, fallow forest, on leaves of Tithonia
diversifolia, 20 February 2010, P.
Phengsintham (P572). GenBank accession no
(ITS, KC677895; LSU, KC677927).
Notes The collection from Laos agrees
with the description of Passolora tithoniae in
Hsieh & Goh (1990) [conidiophores 3090 × 3
4 µm and conidia 3050 × 3.55 µm].
Literature Chupp (1954: 162), Ellis
(1976: 319), Hsieh & Goh (1990: 76), Crous &
Braun (2003: 404).
(39) Pseudocercospora alangii Y.L. Guo &
X.L. Liu, Mycosystema 2: 226, 1989. Figs 78
79.
= Cercospora alangii M. Madal, Indian
J. Mycol. Res. 16: 311, 1978.
Leaf spots circular, 15 mm in diam.,
with brown to dark brown and brown margin.
Caespituli amphigenous, but chiefly
hypophyllous. Mycelium internal; hyphae
branched, 23 µm wide (
x
= 2.5 µm, n = 5),
septate, constricted at the septa, distance
between septa 1014 µm (
x
= 12 µm, n = 5),
subhyaline or hyaline, wall 0.30.5 µm wide (
x
= 0.4 µm, n = 5), smooth. Stromata developed,
substomatal, subglobular, 1246 µm wide (
x
=
29 µm, n = 5), brown to dark brown, stromatal
cells oval, ellipsoidal to angular in outline, 26
µm wide (
x
= 3.8 µm, n = 30), dark brown,
Fig. 76 Passalora tithoniae on Tithonia
diversifolia: 1. Stroma with attached
conidiophores. 27. Conidia. Bars = 10 µm.
Fig. 77 Passalora tithoniae on Tithonia
diversifolia from leaf spots: 1. Caespituli. 2.
Internal mycelium. 34. Stromata with attached
conidiophores. 5. Apex of conidiophores. 611.
Conidia. Bars 2 11 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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wall 0.30.5 µm wide (
x
= 0.35 µm, n = 30),
smooth. Conidiophores fasciculate, arising from
stromata (415 per fascicle), erect, straight or
curved, unbranched, geniculate, 619 × 24 µm
(
x
= 10.1 × 2.88 µm, n = 30), 01-septate,
distance between septa 414 µm (
x
= 10 µm, n
= 30), pale to moderately olivaceous-brown,
paler and narrower towards the apex, wall 0.3
0.5 µm wide (
x
= 0.45 µm, n = 30), smooth.
Conidiogenous cells integrated, acute, 614 ×
24 µm (
x
= 9.25 × 2.94 µm, n = 15), pale
olivaceous or brown; conidiogenous loci
inconspicuous. Conidia solitary, obclavate,
straight to moderately curved, 4071 × 23 µm
(
x
= 60.4 × 2.6 µm, n = 15), 57-septate,
slightly constricted at the septa, pale olivaceous,
wall 0.30.5 µm wide (
x
= 0.38 µm, n = 15),
smooth, obtuse at the apex, with long
obconically truncate base.
Colonies on PDA after 3 weeks at 25°C
dark grey in the centre and grey margin,
spreading surface ridged and smooth, 13125
mm diam.
Hosts Alangium kurzii Craib, A.
salviifolium (L. f.) Wangerin (Cornaceae, incl.
Alangiaceae).
Distribution Asia: China, India, Laos.
Material examined: Phongsali Province,
Phongsali District, Hathin Village, Nam Ou
riverbank, on leaves of Alangium kurzii, 23
June 2010, P. Phengsintham (P596).
Notes The collection from Laos agrees
with the description of Pseudocercospora
alangii published by Guo et al. (1998).
Literature Guo et al. (1998: 1718),
Crous & Braun (2003: 49).
(40) Pseudocercospora baliospermi (S.
Chowdry) Deighton, Mycol. Pap. 140: 139,
1976. Figs 8081.
Cercospora baliospermi S. Chowdry,
Lloydia 24: 94, 1961.
= Cercospora baliospermi Pavgi & U.P.
Singh, Mycopathol. Mycol. Appl. 27: 90, 1965.
Leaf spots circular to irregular, 16 mm
diam., brown to dark brown in the centre, with a
brown to dark brown margin. Caespituli
amphigenous, scattered. Mycelium internal,
inconspicuous. Stromata developed,
substomatal, subglobular, 1535 µm diam. (
x
=
23 µm, n = 5), brown to dark brown, stromatal
cells oval, ellipsoidal to angular in outline, 57
Fig. 78 Pseudocercospora alangii on
Alangium kurzii: 1. Stroma with attached
conidiophores. 27. Conidia. Bar = 10 µm.
Fig. 79 Pseudocercospora alangii on
Alangium kurzii from leaf spots: 1. Lesions on
host leaf with caespituli. 23. Stromata with
attached conidiophores. 48. Conidia. 910.
Cultures. Bars 25 = 10 µm, 9 = 10 mm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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µm wide (
x
= 6.3 µm, n = 30), dark brown,
wall 0.50.8 µm wide (
x
= 0.57 µm, n = 30),
smooth. Conidiophores solitary or fasciculate,
arising from stromata (59 per fascicle), erect,
straight or curved, unbranched, geniculate, 16
60 × 25 µm (
x
= 44.2 × 4.4 µm, n = 15), 25-
septate, distance between septa 516 µm (
x
=
10.6 µm, n = 30), pale to moderately
olivaceous-brown, wall 0.50.8 µm wide (
x
=
0.55 µm, n = 30), smooth. Conidiogenous cells
integrated, subtruncate, cicatrized, 1017 × 45
µm (
x
= 13.5 × 4.25 µm, n = 9), pale
olivaceous or brown; conidiogenous loci
inconspicuous. Conidia solitary, obclavate,
straight to moderately curved, 15101 × 35
µm (
x
= 51.1 × 3.77 µm, n = 30), 18-septate,
slightly constricted at the septa, pale olivaceous,
wall 0.30.5 µm wide (
x
= 0.45 µm, n = 30),
smooth, bluntly rounded at the apex, with
subtruncate base, basal hila 1.52 µm wide (
x
= 1.78 µm, n = 30), wall 0.30.5 µm (
x
= 0.47
µm, n = 30) thick.
Hosts Baliospermum montanum
(Willd.) Müll. Arg. (Euphorbiaceae).
Distribution Asia: India, Laos,
Myanmar.
Material examined Xiengkhouang
Province, Kham District, Napa Village, Fallow
forest, on leaves of Baliospermum montanum, 3
January 2010, P. Phengsintham (P504);
Vientiane Province, Thalad, fallow forest, on
leaves of B. montanum, April 2010, P.
Phengsintham (P548).
Notes The collection from Laos agrees
well with the description in Deighton (1976).
Literature Deighton (1976: 139),
Crous & Braun (2003: 755).
(41) Pseudocercospora buddlejae (W. Yamam)
Goh & W.H. Hsieh, Trans. Mycol. Soc. Republ.
China 2: 114, 1987. Figs 8283.
Cercospora buddlejae W. Yamam.,
Trans. Nat. Hist. Soc. Formosa 26: 279, 1936.
= Pseudocercospora buddlejae
(Yamam.) X.J. Liu & Y.L. Guo, Mycosystema.
2: 230, 1989.
Leaf spots subcircular to irregular, 18
mm diam., at first greyish, later becoming
brown to dark brown in the center, brown to
dark brown at the margin. Caespituli
amphigenous, conspicuous. Mycelium internal,
inconspicuous. Stromata oval to ellipsoidal,
Fig. 80 Pseudocercospora baliospermi on
Baliospermum montanum: 1. Stroma with
attached conidiophores. 2. Conidiophore. 37.
Conidia. Bar = 10 µm.
Fig. 81 Pseudocercospora baliospermi on
Baliospermum montanum from leaf spots: 12.
Stromata with attached conidiophores. 47.
Conidia. Bar = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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2045 µm diam. (
x
= 32.2 µm, n = 5), brown to
dark brown, stromatal cells oval, ellipsoidal and
angular, 410 µm wide (
x
= 7.5 µm, n = 30),
dark brown, wall 0.51 µm wide (
x
= 0.7 µm,
n = 30), smooth. Conidiophores fasciculate,
arising from stromata (1631 per fascicle),
unbranched, geniculate, 25315 × 35 µm (
x
=
103 × 4 µm, n = 15), 115-septate, slightly
constricted at the septa, distance between septa
1125 µm long (
x
= 19.8 µm, n = 30),
uniformly pale to medium brown, much paler
and more narrow toward the tip, wall 0.30.8
µm (
x
= 0.55 µm, n = 30), smooth.
Conidiogenous cells terminal, 1017 × 24 µm
(
x
= 13.4 × 2.88 µm, n = 14), apex obtuse,
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 3353 × 23 µm (
x
= 46 × 2.76 µm, n = 15), 34-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
=
0.45 µm, n = 15), smooth, tip subacute, base
obconically truncate, hila 12 µm wide (
x
=
1.75 µm, n = 15).
Hosts Buddleja asiatica Lour., B.
curviflora Hook. & Arn., B. davidii Franch., B.
lindleyana Fortune, B. madagascariensis Lam.,
Buddleja sp. (Scrophulariaceae).
Distribution Asia: China, India,
Indonesia, Laos, Japan, Philippines, Taiwan.
Material examined Luangnamtha
Province, Luangnamtha District, Chaleunsouk
Village, fallow forest, on leaves of Buddleja
asiatica, 19 February 2010, P. Phengsintham
(P560).
Notes The collection from Laos differs
from the description of this species in Hsieh &
Goh (1990) in having larger stromata (2045
µm diam.) and larger conidiophore fascicles
(1631 per fascicle) [versus stromata small, and
conidiophores 212 per fascicle]. The
conidiophores are 35315 × 45 µm (versus
40120 × 3.56 µm) and the conidia are 3353
× 34 µm (versus 2575 × 3.55 µm).
Literature Chupp. (1954: 358), Hsieh
& Goh (1990: 210), Crous & Braun (2003: 90).
(42) Pseudocercospora catappae (Henn.) X.J.
Liu & Y. L. Guo, Mycosystema 2: 230. 1989.
Figs 8485.
Cercospora catalparum Henn., Bot.
Jahrb. Syst. 34: 56, 1905.
Fig. 82 Pseudocercospora buddlejae on
Buddleja asiatica: 1. Stroma with attached
conidiophores. 2. Conidiophore. 36.
Conidia. Bar = 10 µm.
= Pseudocercospora catappae Goh &
W.H. Hsieh, in Hsieh & Goh, Cercospora
and similar fungi from Taiwan: 57, 1990.
= Ramularia catappae Racib, Paras.
Algen und Pilze Javas II, Batavia: 41, 1900.
= Cercospora terminaliae Sawada,
Taiwan Agric. Rev. 38: 701, 1942.
Leaf spots subcircular to irregular, 1
14 mm diam., brown to dark brown in the
centre, yellowish at the margin. Caespituli
hypophyllous, conspicuous. Mycelium
internal, inconspicuous. Stromata oval to
ellipsoidal, 2055 µm diam. (
x
= 38.5 µm, n
= 9), brown to dark brown, stromatal cells
oval, ellipsoidal and angular, 59 µm wide
(
x
= 6 µm, n = 13), dark brown, wall 0.50.8
µm wide (
x
= 0.53 µm, n = 13), smooth.
Conidiophores fasciculate, arising from
stromata (718 per fascicle), unbranched, 0
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 83 Pseudocercospora buddlejae on
Buddleja asiatica from leaf spots: 12. Lesions
on host leaves (1. upper surface and 2. lower
surface). 3. Caespituli. 45. Stromata with
attached conidiophores. 6. Apices of
conidiophores. 710. Conidia. Bars 12 = 10
mm, 410 = 10 µm.
1-geniculate, 1225 × 35 µm (
x
= 18.5 × 4
µm, n = 11), 02-septate, slightly constricted
at the septa, distance between septa 514 µm
long (
x
= 8.25 µm, n = 17), uniformly pale to
medium brown, much paler and more narrow
toward the tip, wall 0.30.5 µm (
x
= 0.48
µm, n = 17), smooth. Conidiogenous cells
terminal, 814 × 34 µm (
x
= 10.1 × 3.29
µm, n = 11), obtuse, conidiogenous loci
inconspicuous, unthickened, not darkened.
Conidia solitary, obclavate, straight to
slightly curved, 5180 × 34 µm (
x
= 65 ×
3.7 µm, n = 7), 412-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
= 0.33 µm, n = 7), smooth, tip subacute, base
obconically truncate, hila 12 µm wide (
x
=
1.6 µm, n = 5).
Hosts Terminalia arjuna (Roxb.)
Wight & Arn., T. catappa L., T. chebula
Retz., T. crenulata Roth., T. tomentosa Wight
& Arn., Terminalia sp. (Combretaceae).
Distribution Africa: Guinea.
Tanzania; Asia: China, India, Indonesia,
Laos. Myanmar, Taiwan; North America
and West Indies: Cuba, Dominican
Republic, Panama; Oceania: America
Samoa, Fiji, Micronesia, New Caledonia,
Papua New Guinea, Samoa, Solomon
Islands.
Material examined Vientiane
Capital, Xaythany District, Dongmakhai
Village, dry dipterocarp forest, on leaves of
Terminalia tomentosa, 4 February 2010, P.
Phengsintham (P543).
Notes In the Laos specimen the
conidiophores are 1225 × 35 µm and the
conidia are 5180 × 34 µm, which is similar
to those described in Hsieh & Goh (1990)
[conidiophores 2080 × 3.55 µm, conidia
35145 × 35 µm].
Literature Chupp. (1954: 114), Hsieh
& Goh (1990: 57), Guo & Hsieh (1995: 58),
Crous & Braun (2003: 111).
Fig. 84 Pseudocercospora catappae on
Terminalia tomentosa: 1. Stroma with
attached conidiophores. 24. Conidiophores.
510. Conidia. Bar = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 85 Pseudocercospora catappae on
Terminalia tomentosa from leaf spots: 12.
Lesions on host leaves (1. upper surface and 2.
lower surface). 3. Caespituli. 45. Stromata
with attached conidiophores. 6.7.
Conidiophores. 810. Conidia. Bars 12 = 10
mm, 410 = 10 µm.
(43) Pseudocercospora cotizensis (A.S. Mull.
& Chupp) Deighton, Mycol. Pap. 140: 142,
1976. Figs 8687.
Cercospora cotizensis A.S. Mull. &
Chupp, Ceiba 1: 173, 1950.
= Cercospora crotalariae Syd., Ann.
Mycol. 28: 208, 1930 (nom.illeg.), homonym of
C. crotalariae Sacc., 1906.
= Cercospora crotalariae Sawada, J.
Taihoku Soc. Agric. 7: 118, 1942 (nom. illeg.),
homonym of C. crotalariae, 1930.
Leaf spots subcircular, 112 mm diam.,
at first yellowish, later becoming brown, dingy
grey to pale tan, yellowish margin. Caespituli
hypophyllous. Mycelium internal; hyphae
branched, 14 µm wide (
x
= 2.56 µm, n = 16),
septate, constricted at the septa, distance
between septa 518 µm (
x
= 10.5 µm, n = 16),
brownish, subhyaline, wall 0.30.8 µm wide (
x
= 0.53 µm, n = 8), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata oval to ellipsoidal, 830
µm diam. (
x
= 19.13 µm, n = 30), brown to
dark brown, stromatal cells oval, ellipsoidal and
angular, 48 µm wide (
x
= 5.67 µm, n = 30),
dark brown, wall 0.81 µm wide (
x
= 0.95 µm,
n = 30), smooth. Conidiophores fasciculate,
arising from stromata (28 per fascicle),
slightly geniculate, unbranched or branched,
1360 × 36 µm (
x
= 32.27 × 4.45 µm, n =
30), 14-septate, constricted at the septa,
distance between septa 514 µm long (
x
= 9.77
µm, n = 30), uniformly pale to medium brown,
much paler and more narrow toward the tip,
wall 0.51 µm (
x
= 0.68 µm, n = 21), smooth.
Conidiogenous cells terminal, 715 × 35 µm
(
x
= 12.83 × 4.8 µm, n = 8), apex obtuse;
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 2885 × 35 µm (
x
= 50.6 × 3.44 µm, n = 30), 08-septate, pale
olivaceous-brown, wall 0.50.8 µm wide (
x
=
0.63 µm, n = 30), smooth; apex subacute; base
obconically truncate, hila 12 µm wide (
x
=
0.62 µm, n = 30).
Colonies on PDA after 3 weeks at 25°C
black-grey mycelium, reaching 23 mm diam.;
hyphae 210 µm wide (
x
= 4.33 µm, n = 30),
septate, constricted at the septa, distance
between septa 722 µm (
x
= 13.57 µm, n =
30), brownish or subhyaline, wall 0.251 µm
wide (
x
= 0.64 µm, n = 30), smooth. Conidia
not formed in culture.
Hosts Crotalaria anagyroides Kunth,
C. greensis Guill. & Perr., C. incana L., C.
jucea L., C. mucronata Desv., C. pallida
Aiton., C. retusa L., C. spectabilis Roth, C.
sericea Willd., C. striata DC., C. uncinella
subsp. elliptica (Roxb.) Polhill., C. verrucosa L.
(Fabaceae).
Distribution Africa: Guinea. Asia:
China, Hong Kong, India, Laos, Malaysia,
Philippines, Sabah, Singapore, Sri Lanka,
Taiwan; North America and West Indies:
Cuba, Guatemala, Puerto Rico, USA (FL),
Virgin Islands; Oceania: Cook Island,
Micronesia, New Caledonia, Niue, Papua New
Guinea, Samoa, Solomon Islands; South
America: Venezuela.
Material examined Vientiane Capital,
Xaythany District, Xay Village, rice paddy, on
leaves of Crotalaria uncinella subsp. elliptica,
15 April 2006, P. Phengsintham (P06); ibid., 28
August 2008, P. Phengsintham (P412).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Notes The collections from Laos have
well developed stromata more so than
Pseudocercospora cotizensis as circumscribed
by Hsieh & Goh (1990) [conidiophores 1575 ×
35.6 µm and conidia 2080 × 35 µm].
Literature Chupp (1954: 297), Hsieh
& Goh (1990: 184185), Crous & Braun (2003:
141).
Fig. 86 Pseudocercospora cotizensis on
Crotalaria uncinella subsp. elliptica: 1.
Stroma with attached conidiophores. 2.
Conidiophore with attached young conidium.
3. Stroma with attached conidiophores. 45.
Conidiophores. 612. Conidia. Bar = 10 µm.
(44) Pseudocercospora duabangae M.D.
Mehrotra & R.K. Verma. Mycol. Res. 95:
116, 1991. Figs 8889.
Leaf spots subcircular to irregular, 1
4 mm diam., at first yellowish, later
becoming brown, dingy grey to pale tan,
brown to dark brown at the margin.
Caespituli hypophyllous, conspicuous.
Mycelium internal; hyphae branched, 25
µm wide (
x
= 2.96 µm, n = 30), septate,
constricted at the septa, distances between
septa 825 µm (
x
= 14 µm, n = 30),
brownish, subhyaline, wall 0.30.5 µm wide
(
x
= 0.35 µm, n = 30), smooth, forming
plate-like plectenchymatous stromatic hyphal
aggregations. Stromata oval to ellipsoidal, 4
65 µm diam. (
x
= 37.9 µm, n = 30), brown
to dark brown, stroma cells oval, ellipsoidal
to angular, 37 µm wide (
x
= 4.4 µm, n =
30), dark brown, wall 0.50.8 µm wide (
x
=
0.63 µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (245 per
fascicle), geniculate, unbranched, 834 × 25
µm (
x
= 18.1 × 3.7 µm, n = 15), 03-septate,
slightly constricted at the septa, distance
between septa 514 µm long (
x
= 8.37 µm, n
= 30), uniformly pale to medium brown,
much paler and narrower towards the tip,
wall 0.30.5 µm (
x
= 0.47 µm, n = 30),
smooth. Conidiogenous cells terminal, 814
× 34 µm (
x
= 10.1 × 3.43 µm, n = 14), apex
obtuse, conidiogenous loci inconspicuous,
unthickened, not darkened. Conidia solitary,
obclavate, straight to slightly curved, 1861
× 23 µm (
x
= 38.4 × 2.76 µm, n = 15), 17-
septate, pale olivaceous-brown, wall 0.30.5
µm wide (
x
= 0.31 µm, n = 15), smooth, tip
subacute, base obconically truncate, hila 12
µm wide (
x
= 1.61 µm, n = 9).
Fig. 87 Pseudocercospora cotizensis on
Crotalaria uncinella subsp. elliptica from leaf
spots: 12 Lesions on host leaves (1. upper
surface and 2. lower surface). 35.
Conidiophores. 69. Conidia. 10. Culture. Bars
12, 10 = 10 mm, 39 = 10 µm.
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Colonies on PDA after 3 weeks at 25°C
with dark grey mycelium, reaching 68 mm
diam., hyphae 25 µm wide (
x
= 2.96 µm, n =
30), septate, constricted at the septa, distance
between septa 725 µm (
x
= 14.96 µm, n =
30), brownish or subhyaline, wall 0.30.5 µm
wide (
x
= 0.35 µm, n = 30), smooth. Conidia
not formed in culture.
Hosts Duabanga grandiflora (Roxb.
ex DC.) Walp. (Lythraceae).
Distribution Asia: India, Laos,
Thailand.
Material examined Vientiane
Province, Home District, Pha En Village, on
leaves of Duabanga grandiflora, 18 November
2009, P. Phengsintham (P465); Xiangkhouang
Province, Phoukood District, Namchad Village,
on leaves of D. grandiflora, 3 January 2010, P.
Phengsintham (P511). GenBank accession no
(ITS, KC677899; LSU, KC677929).
Notes Duabanga has previously been
placed in the Duabangaceae or Sonneratiaceae.
However, according to new phylogenetic
results, Duabanga is now placed in the
  sperm Phylogeny
    
Among Pseudocercospora spp. on other hosts
of the Lythraceae, P. duabangae is
morphologically comparable with P.
lagerstroemiae-subcostatae (Sawada) Goh &
W.H. Hsieh (conidiophores up to 60 µm long,
conidia cylindrical to obclavate-cylindrical) and
P. lythracearum (Heald & F.A. Wolf) X.J. Liu
& Y.L. Guo (caespituli amphigenous,
conidiophores uniformly olivaceous or pale
olivaceous-brown, conidia up to 90 × 4 µm)
[Chupp 1954, Hsieh & Goh 1990, Guo & Hsieh
1995]. Other species on hosts of the Lythraceae
are quite distinct, e.g. P. lagerstroemiigena Goh
& W.H. Hsieh (with superficial hyphae and
solitary conidiophores, conidiophores narrower,
only 23 µm wide), P. woodfordiae X.J. Liu &
Y.L. Guo (conidiophores up to 260 µm long,
often subsynnematous, conidia 46.5 µm wide)
or P. woodfordiigena U. Braun & Crous
(stromata very large, 60120 µm diam.,
conidiophores up to 65 µm long, conidia
narrowly linear, up to 130 × 23.5 µm) [Chupp
1954, Hsieh & Goh 1990, Guo & Hsieh 1995,
Crous & Braun 2003].
Literature Chupp 1954, Hsieh & Goh
1990, Merhostra & Verma (1991, 11631168),
Guo & Hsieh 1995, Crous & Braun (2003).
Fig. 88 Pseudocercospora duabangae on
Duabanga grandiflora: 1. Stroma with attached
conidiophores. 23. Conidiophores. 49. Conidia.
Bar = 10 µm.
Fig. 89 Pseudocercospora duabangae on
Duabanga grandiflora from leaf spots: 12.
Lesions on host leaves (1. upper surface and 2.
lower surface). 3. Caespituli. 45. Stromata
with attached conidiophores. 6.7.
Conidiophores. 811. Conidia. 12. Culture.
Bars 12, 12 = 10 mm, 411 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
101
(45) Pseudocercospora eupatorii-formosani U.
Braun & Bagyan., Sydowia 51: 8, 1999. Figs
9091.
Cercospora eupatorii-formosani
Sawada, Rep. Gov. Agric. Res. Inst. Taiwan 86:
169, 1943 (nom. inval., Art. 36.1).
Pseudocercospora eupatorii-
formosani (Sawada) J.M. Yen, in Yen & Lim,
Gard. Bull. Singapore 33: 175, 1980 (comb.
inval.).
Pseudocercospora eupatorii-
formosani (Sawada ex Y.L. Guo & W.H.
Hsieh) J.M. Yen ex Y.L. Guo & W.H. Hsieh,
The genus Pseudocercospora in China: 67,
1995 (nom. inval., Art. 37.1).
Leaf spots angular to irregular, 15 mm
diam., at first yellowish, later becoming dark
brown or black, and with yellowish margin.
Caespituli amphigenous, inconspicuous.
Mycelium internal, sparsely developed; hyphae
small, branched, intercellular, 23.5 µm wide,
septate, constricted at the septa, distance
between septa 48 µm, hyaline to subhyaline,
thin-walled 0.30.5 µm wide, smooth, forming
plate-like plectenchymatous structures; external
hyphae lacking. Stromata well-developed,
substomatal, oval, ellipsoidal, 1540 µm wide
(
x
= 29.93 µm, n = 14), brown to dark brown,
stomatal cells oval, angular to obclavate in
outline, 38 µm wide (
x
= 4.75 µm, n = 16),
wall 0.61 µm wide (
x
= 0.74 µm, n = 16),
smooth. Conidiophores single or fasciculate,
arising from stromata (116 per fascicle),
emerging through stomata, nearly straight or
cylindrical to moderately geniculate-sinuous,
simple, unbranched, 422 × 24 µm (
x
= 45.45
× 2. 45 µm, n = 30), aseptate, uniformly pale to
medium brown, or much paler and more
narrower toward the tip, thin-walled 0.50 µm,
smooth. Conidiogenous cells terminal, 622 ×
23 µm, nearly straight or cylindrical to
moderately geniculate-sinuous; conidiogenous
loci inconspicuous or subdenticalate,
unthickened, and not darkened. Conidia formed
singly, narrowly obclavate, straight to slightly
curved, 1571 × 24 µm (
x
= 45.45 × 2. 45
µm, n = 30), 15-septate, pale olivaceous-
brown, wall 0.50.8 µm (
x
= 0.68 µm, n = 13),
smooth, apex (tip) subacute, base truncate, hila
1.33 µm wide, wall 0.73 µm wide, unthickened
and not darkened.
Colonies on PDA after 3 weeks at 25°C
with grey mycelium, reaching 6 mm diam.,
hyphae constricted at the septa, width of hyphae
variable, hyphae of the primary mycelium
wider than those of secondary and all following
mycelia, 16 µm wide (
x
= 2.69 µm, n = 30),
distance between septa 423 µm (
x
= 13 µm, n
= 30), thin-walled 0.30.8 µm (
x
= 0.53 µm, n
= 30), hyaline or brownish, smooth. Conidia not
formed in culture.
Hosts Ageratina adenophora
(Spreng.) R.M. King & H. Rob., Chromolaena
odorata (L.) King & Robinson., Eupatorium
ayapana Vent., E. formosanum Hayata,
Eupatorium sp. (Asteraceae).
Distribution Africa: Ivory Coast;
Asia: Brunei, Cambodia, China, India,
Indonesia, Laos, Nepal, Malaysia, Taiwan;
North America and West Indies: Cuba;
Australia; Oceania: New Zealand; South
America: Brazil.
Material examined Vientiane Capital,
Xaythany District, Dong Makhai Village,
fallow forest, on leaf of Chromolaena odorata,
19 April 2006, P. Phengsintham (P09).
GenBank accession no (ITS, KC677900; LSU,
KC677930).
Notes The determination of the
collection from Laos was difficult due to
problems to distinguish Pseudocercospora
eupatorii (Peck) U. Braun & R.F. Castañeda
and P. eupatorii-formosani. The two species are
morphologically very similar. The true P.
eupatorii is only known from North America
(U. Braun, in litt.). Based on its type material, it
is characterized by having short, broad
conidiophores, about 530 × 38 µm, and
consistently lacking superficial hypha. The
collection from Cuba on Eupatorium sp., which
was referred to as P. eupatorii by Braun &
Castañeda (1991), rather belongs to P.
eupatorii-formosani. The latter species differs
from P. eupatorii in having short but much
narrower conidiophores, ca. 24.5 µm wide.
Furthermore, superficial hyphae with solitary
conidiophores are often present in vivo, but
they can also be absent. Hsieh & Goh (1990),
based on type material of P. eupatorii-
formosani, as well as Yen & Lim (1980), based
on material from Malaysia on Chromolaena
odorata, did not find any superficial mycelium,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
102
whereas Guo & Hsieh (1995) described and
illustrated superficial hyphae with solitary
conidiophores. U. Braun (in litt.) examined
material on Chromolaena odorata and
Eupatorium spp. from Brunei, Cuba and India,
occasionally also without, but mostly with
superficial hyphae. All collections from Asia
have narrow conidiophores and seem to belong
to P. eupatorii-formosani. The collection from
Laos agrees well with the descriptions of Yen &
Lim (1980) as well as Hsieh & Goh (1990).
Pseudocercospora eupatorii and P. eupatorii-
formosani are tentatively maintained as two
different species. The true affinity of the two
species and a possible identity can only be
proven on the basis of inoculation experiments
or molecular sequence analyses.
Literature Chupp (1954: 135), Braun
& Castañeda (1991: 293), Guo & Hsieh (1995:
6768), Hsieh & Goh (1990: 84), Yen & Lim
(1980: 175176), Crous & Braun (2003: 179).
Fig. 90 Pseudocercospora eupatorii-
formosani on Chromolaena odorata: 16.
Conidiophores. 711. Conidia. Bar = 10 µm.
(46) Pseudocercospora formosana (W.
Yamam.) Deighton, Mycol. Pap. 140: 144,
1976. Figs 9293.
Cercospora formosana W. Yamam., J.
Soc. Trop. Agric. 6: 600, 1934.
= Cercospora lantanae-aculeatae J.M.
Yen, Rev. Mycol. 31: 124, 1996.
Pseudocercospora lantanae-aculeatae
(J.M. Yen) J.M. Yen, Bull. Trimestriel Soc.
Mycol. France 96:33, 1980.
= Cercospora lantanae-camarae J.M. Yen & Gilles,
Cah. Maboke 9: 106, (1971) 1973.
= Mycovellosiella lantanae var.
verbenacearum Bhalla, S.K. Singh & A.K.
Srivast., Austral. Syst. Bot. 12: 369, 1999.
Leaf spots irregular, 12.5 mm diam.,
brown-purple to dark brown in the centre, and
with pale to purplish-brown margin. Caespituli
hypophillous, scaterred, brown. Mycelium
internal; hyphae branched, 35 µm wide (
x
=
4.16 µm, n = 12), septate, constricted at the
septa, distance between septa 720 µm (
x
=
11.15 µm, n = 12), subhyaline or hyaline, wall
approximately 0.50.8 µm wide (
x
= 0.52 µm,
n = 12), smooth. Stromata developed,
substomatal, subglobular, 1545 µm diam. (
x
=
27.5 µm, n = 7), brown to dark brown, stromatal
cells oval, ellipsoidal to angular in outline, 35
Fig. 91 Pseudocercospora eupatorii-
formosani on Chromolaena odorata from leaf
spots: 12 Lesions on host leaves (1. upper
surface and 2. lower surface). 34. Stroma with
attached conidiophores. 56. Conidiophores. 7
11. Conidia. 12. Culture. Bars 12, 12 = 10
mm, 311 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
103
µm wide (
x
= 4 µm, n = 13), dark brown, wall
approximately 0.50.8 µm wide (
x
= 0.7 µm, n
= 13), smooth. Conidiophores fasciculate,
arising from stromata (17 per fascicle), erect,
straight or curved, unbranched, geniculate, 23
30 × 35 µm (
x
= 26.6 × 4.27 µm, n = 11), 0
3-septate, distance between septa 618 µm (
x
=
11.5 µm, n = 22), pale to moderately olivaceous
brown, paler and narrower towards the apex,
wall approximately 0.50.8 µm wide (
x
= 0.6
µm, n = 22), smooth. Conidiogenous cells
integrated, apex obtuse, 1018 × 35 µm (
x
=
14.6 × 4.2 µm, n = 9), pale olivaceous or
brown; conidiogenous loci inconspicuous.
Conidia solitary, cylindrical to cylindrical-
obclavate, straight to moderately curved, 3298
× 34 µm (
x
= 54.8 × 3.2 µm, n = 7), 310-
septate, slightly constricted at the septa, pale
olivaceous, wall 0.250.3 µm wide (
x
= 0.29
µm, n = 7), smooth, rounded at the apex, with
long obconic to long obconically truncate base.
Hosts Lantana aculeata L., L. camara
L., L. mista L. (Verbenaceae).
Distribution Africa: Gabon,
Mozambique, South Africa, Sudan; Asia:
Brunei, China, Hong Kong, India, Laos,
Singapore, Taiwan; Oceania: Vanuatu; South
America: Brazil.
Material examined Khammoune
Province, Nakai District, Nahao Village, fallow
forest, on leaves of Lantana camara, 6 March
2008, P. Phengsintham (P576).
Notes In the collection from Laos the
conidiophores are 2330 × 35 µm and the
conidia are 3298 × 34 µm, which is similar
[conidiophores 1540 × 34.5 µm and conidia
30120 × 23.7 µm] to those reported in Guo &
Hsieh (1995) and Hsieh & Goh (1990)
[conidiophores 535 × 24 µm and conidia 17
100 × 23 µm].
Literature Hsieh & Goh (1990: 349),
Guo & Hsieh (1995: 345), Crous & Braun
(2003: 187).
(47) Pseudocercospora fuligena (Roldan)
Deighton, Mycol. Pap. 140: 144, 1976. Figs 94
95.
Cercospora fuligena Roldan, Phillipp.
J. Sci. 66: 8, 1938.
Fig. 92 Pseudocercospora formosana on
Lantana camara from leaf spots: 1. Stroma
with attached conidiophores. 25.
Conidiophores. 610. Conidia. Bar = 10 µm.
Fig. 93 Pseudocercospora formasna on
Lantana camara from leaf spots: 1. Stroma
with attached conidiophores. 23.
Conidiophores. 48. Conidia. 910. Culture.
Bars 18 = 10 µm, 9 = 10 mm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
104
Leaf spots irregular, 28 mm diam.,
brown to dark brown in the centre, and with
yellowish to yellowish-brown margin.
Caespituli amphigenous. Mycelium internal;
hyphae branched, 14 µm wide (
x
= 2.86 µm,
n = 21), septate, constricted at the septa,
distances between septa 415 µm (
x
= 9.14
µm, n = 21), subhyaline or hyaline, wall
approximately 0.30.5 µm wide (
x
= 0.38 µm,
n = 21), smooth. Stromata well developed,
substomatal, subglobular, 1525 µm diam. (
x
=
0.38 µm, n = 10), brown to dark brown,
stromatal cells oval, ellipsoidal to angular in
outline, 36 µm wide (
x
= 4.43 µm, n = 30),
dark brown, wall approximately 0.51 µm wide
(
x
= 0.68 µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (418 per
fascicle), erect, straight or curved, unbranched,
geniculate, 831 × 45 µm (
x
= 16.1 × 4.32
µm, n = 30), 02-septate, distance between
septa 423 µm (
x
= 9.43 µm, n = 30), pale to
moderately olivaceous brown, paler and
narrower towards the apex, wall 0.50.8 µm
wide (
x
= 0.67 µm, n = 30), smooth.
Conidiogenous cells integrated, apex obtuse, 8
19 × 35 µm (
x
= 12.9 × 4.12 µm, n = 30), pale
olivaceous or brown; conidiogenous loci
inconspicuous. Conidia solitary, cylindrical to
cylindrical-obclavate, straight to moderately
curved, 2176 × 2.54 µm (
x
= 49.67 × 3.12
µm, n = 30), 16-septate, slightly constricted at
the septa, pale olivaceous, wall 0.30.5 µm
wide (
x
= 0.4 µm, n = 30), smooth, rounded at
the apex, with long obconic to long obconically
truncate base.
Colonies on PDA after 3 weeks at 25 °C
grey-brown, spreading surface ridged and
smooth, 1013 mm diam., hyphae 211 µm
wide (
x
= 4.77 µm, n = 30), septate, constricted
at the septa, distance between septa 516 µm
(
x
= 10.97 µm, n = 30), brown, wall 0.31 µm
wide (
x
= 0.54 µm, n = 30), smooth. Conidia
not formed in culture.
Hosts Capsicum annuum L., C.
baccatum L., C. chinense Jacq., C. frutescens
L., Lycopersicon chilense Dunal, L.
chmielewskii C.M. Rick, Kesicki, Fobes & M.
Holle, L. esculentum Mill., L. glandulosum, L.
parviflorum C.M. Rick, Kesicki, Fobes & M.
Holle, L. pennellii (Correll) D'Arcy, L.
peruvianum Mill., L. pimpinellifolium L.,
Solanum indicum L., S. melongena L. and S.
nigrum L. (Solanaceae).
Distribution Africa: Gabon, Gambia,
Ivory Coast, Nigeria, Senegal, Somalia,
Tanzania, Togo, Uganda; Asia: Bangladesh,
Brunei, Cambodia, China, Hong Kong, India,
Japan, Laos, Malaysia, Philippines, Taiwan,
Thailand, Vietnam; North America and West
Indies: Cuba, Mexico, Netherlands Antilles,
USA (FL); Australia; Oceania: Cook Islands,
New Caledonia, New Zealand, Palau, Papua
New Guinea, Solomon Islands, Vanuatu; South
America: Brazil, Chile.
Material examined Vientiane Capital,
Xaythany District, Xay Village, garden, on
leaves of Lycopersicon esculentum, 14 May
2006, P. Phengsintham (P49). GenBak
accession no (EF 1 alpha, JQ837455).
Notes The collection from Laos is
similar to Pseudocercospora fuligena as
described by Chupp (1954), Guo & Hsieh
(1995), Hsieh & Goh (1990).
Literature Chupp (1954: 540), Ellis
(1976: 287), Hsieh & Goh (1990: 314), Guo &
Hsieh (1995: 318), Crous & Braun (2003: 190).
Fig. 94 Pseudocercospora fuligena on
Lycopersicon esculentum: 1. Stroma with
attached conidiophores. 2. Conidiophore. 3
8. Conidia. Bar = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
105
Fig. 95 Pseudocercospora fuligena on
Lycopersicon esculentum from leaf spots: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 34. Stromata with attached
conidiophores. 58. Conidia. 9. Culture. Bars
12, 9 = 10 mm, 38 = 10 µm.
(48) Pseudocercospora getoniae sp. nov. Figs
9697.
MycoBank, MB 801727
Morphologically close to
Pseudocercospora combretigena, but easily
distinguishable by the formation of
conspicuous, definite leaf spots, hypophyllous
caespituli and by its smaller stromata, 1030
µm diam., pluriseptate conidiophores (with up
to 8 septa) and obclavate conidia.
Leaf spots subcircular to irregular, 110
mm diam., at first yellowish, later becoming
brown to dark brown in the center, brown to
dark brown at the margin. Caespituli
hypophyllous, conspicuous. Mycelium internal;
hyphae branched, 48 µm wide (
x
= 5.33 µm,
n = 11), septate, constricted at the septa,
distance between septa 1015 µm (
x
= 10.17
µm, n = 11), brownish, subhyaline, wall 0.30.5
µm wide (
x
= 0.46 µm, n = 11), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata oval to
ellipsoidal, 1030 µm diam. (
x
= 23.3 µm, n =
5), brown to dark brown, stromatal cells oval,
ellipsoidal and angular, 511 µm wide (
x
= 7.3
µm, n = 30), dark brown, wall 0.30.5 µm wide
(
x
= 0.48 µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (114 per
fascicle), unbranched, geniculate, 2699 × 45
µm (
x
= 72 × 4.75 µm, n = 15), 18-septate,
slightly constricted at the septa, distance
between septa 522 µm long (
x
= 11.3 µm, n =
30), uniformly pale to medium brown, much
paler and more narrow toward the tip, wall 0.3
0.5 µm (
x
= 0.49 µm, n = 30), smooth.
Conidiogenous cells terminal, 1522 × 34 µm
(
x
= 18.5 × 3.5 µm, n = 15), obtuse,
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 5070 × 24 µm (
x
= 52 × 3 µm, n = 15), 38-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
=
0.33 µm, n = 15), smooth, tip subacute, base
obconically truncate, hilla 12 µm wide (
x
=
1.66 µm, n = 15).
Hosts Getonia floribunda Roxb. [
Calycopteris floribunda (Roxb.) Lam. ex Poir.]
(Combretaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Dongmakhai Village, dry
dipterocarp forest, on leaves of Getonia
floribunda, 4 February 2010, P. Phengsintham
(P545, MFLU 12-2201, Holotype).
Notes Pseudocercospora getoniae
resembles P. combretigena (Braun 2001), but
the latter species does not form any definite leaf
spots, epiphyllous caespituli, larger stromata,
3050 µm diam., 02(6)-septate
conidiophores, often reduced to conidiogenous
cells, and obclavate-cylindrical conidia. The
genus Getonia is phylogenetically clearly
distinct from Combretum (Tan et al. 2002).
Literature Crous & Braun (2003: key).
(49) Pseudocercospora gmelinae (J.M. Yen &
Gilles) J.M. Yen, Bull. Trimestriel Soc. Mycol.
France 94: 383, 1979. Figs 9899.
= Cercospora gmelinae J.M. Yen &
Gilles, Bull. Trimestriel Soc. Mycol. France 91:
99, 1975.
Leaf spots circular, 18 mm in diam.,
with brown to dark brown and brown margin.
Caespituli amphigenous, but chiefly
hypophyllous. Mycelium internal; hyphae
branched, 23 µm wide (
x
= 2.25 µm, n = 6),
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
106
Fig. 96 Pseudocercospora getoniae on
Getonia floribunda from leaf spots: 1. Stroma
with attached conidiophores. 25.
Conidiophores. 6. Conidia. Bars = 10 µm.
Fig. 97 Pseudocercospora getoniae on Getonia
floribunda from leaf spots: 12 Lesions on host
leaves (1. upper surface and 2. lower surface). 3.
Caespituli. 4. Internal hyphae. 56. Stromata
with attached conidiophores. 7. Conidiophore. 8.
Conidium. Bars 12 = 10 mm, 48 = 10 µm.
septate, constricted at the septa, distance
between septa 1014 µm (
x
= 12.25 µm, n =
8), subhyaline or hyaline, wall 0.30.5 µm wide
(
x
= 0.45 µm, n = 8), smooth. Stromata well-
developed, substomatal, subglobular, 4080 µm
wide, brown to dark brown, stromatal cells
oval, ellipsoidal to angular in outline, 410 µm
wide (
x
= 6 µm, n = 30), dark brown, wall 0.5
1 µm wide (
x
= 0.65 µm, n = 30), smooth.
Conidiophores fasciculate, arising from
stromata (455 per fascicle), erect, straight or
curved, unbranched, 2770 × 57 µm (
x
= 49.9
× 5.17 µm, n = 18), 38-septate, distance
between septa 615 µm (
x
= 10 µm, n = 30),
pale to moderately olivaceous-brown, paler and
narrower towards the apex, wall 0.51 µm wide
(
x
= 0.77 µm, n = 30), smooth. Conidiogenous
cells integrated, 614 × 35 µm (
x
= 9.27 ×
4.07 µm, n = 30), pale olivaceous or brown;
conidiogenous loci inconspicuous. Conidia
solitary, obclavate, straight to moderately
curved, 1440 × 46 µm (
x
= 29.4 × 5.05 µm,
n = 20), 110-septate, slightly constricted at the
septa, pale olivaceous, wall 0.50.8 µm wide
(
x
= 0.56 µm, n = 20), smooth, obtuse at the
apex, with long obconically truncate base.
Colonies on PDA after 3 weeks at 25°C
whire-grey in the centre and grey margin,
spreading surface ridged and smooth, 1012
mm diam, hyphae 28 µm wide (
x
= 4.43 µm,
n = 30), septate, constricted at the septa,
distance between septa 825 µm (
x
= 15.46
µm, n = 30), brown, wall 0.31 µm wide (
x
=
0.54 µm, n = 30), smooth. Conidia not formed
in culture.
Hosts Gmelina arborea Roxb.,
Gmelina sp. (Verbenaceae).
Distribution Africa: Ivory Coast;
Asia: Laos, Philippines, Thailand; South
America: Venezuela.
Material examined Bolikhamxay
Province, Khamkeud District, Nongxong
village, mixed deciduous forest, on leaves of
Gmelina arborea, 10 August 2008, P.
Phengsintham (P358); Xiengkhouang Province,
Phoukood district, Namchat village, fallow
forest, on leaves of G. arborea, 3 January 2010,
P. Phengsintham (P505). GenBank accession no
(ITS, KC677901; LSU, KC677931).
Notes The Laos collections agree with
the description of Pseudocercospora gmelinae
published by Yen (1979).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
107
Fig. 98 Pseudocercospora gmelinae on
Gmelina arborea: 1. Stroma with attached
conidiophores. 2. Conidiophore. 37. Conidia.
Bar = 10 µm.
Fig. 99 Pseudocercospora gmelinae on
Gmelina arborea from leaf spots: 12. Lesions
on host leaves (1. upper surface, 2. lower
surface). 34. Stromata with attached
conidiophores. 56. Conidiophores. 710.
Conidia. Bars 12 = 10 mm, 310 = 10 µm.
Literature Index of Fungi 4 (1981:
603), Yen (1979: 383).
(50) Pseudocercospora holarrhenae (Thirum.
& Chupp) Deighton, Mycol. Pap. 140: 145,
1976. Figs 100101.
Cercospora ho1arrhenae Thirum. &
Chupp, Mycologia 40: 355, 1948.
= Pseudocercosporella ho1arrhenae
A.N. Ray, B. Ray & Kamal, Mycol. Res. 97:
28, 1991.
Leaf spots subcircular to irregular, 215
mm diam., at first brown yellowish, later
becoming brown-grey in the center, brown to
dark brown at the margin. Caespituli
hypophyllous, conspicuous. Mycelium internal;
hyphae branched, 23 µm wide (
x
= 2.28 µm,
n = 10), septate, constricted at the septa,
distance between septa 715 µm (
x
= 8.7 µm, n
= 7), brownish, subhyaline, wall approximately
0.30.5 µm wide (
x
= 0.37 µm, n = 7), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata oval to
ellipsoidal, 2040 µm diam. (
x
= 30.9 µm, n =
5), brown to dark brown, stromatal cells oval,
ellipsoidal and angular, 57 µm wide (
x
= 5.9
µm, n = 22), dark brown, wall 0.50.8 µm wide
(
x
= 0.64 µm, n = 22), smooth. Conidiophores
fasciculate, arising from stromata (619 per
fascicle), geniculate, unbranched, 2337 × 46
µm (
x
= 30.6 × 4.8 µm, n = 9), 13-septate,
slightly constricted at the septa, distance
between septa 518 µm long (
x
= 10.5 µm, n =
25), uniformly pale to medium brown, much
paler and more narrow toward the tip, wall 0.5
0.8 µm (
x
= 0.57 µm, n = 25), smooth.
Conidiogenous cells terminal, 918 × 35 µm
(
x
= 13.5 × 4 µm, n = 10), apex obtuse,
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 2786 × 24 µm (
x
= 60.61.4 × 3.15 µm, n = 13), 27-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
=
0.32 µm, n = 13), smooth, tip subacute, base
obconically truncate, hilla 12 µm wide (
x
=
1.61 µm, n = 9).
Hosts Holarrhena antidysenterica (L.)
Wall. ex A. DC., H. curtisii King & Gamble
(Apocynaceae).
Distribution Asia: India, Laos.
Material examined Vientiane
Province, Phonhong District, Thalad Village,
fallow forest, on leaves of Holarrhena curtisii,
4 February 2010, P. Phengsintham (P540).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
108
GenBank accession no (ITS, KC677902; LSU,
KC677932).
Notes In the sample from Laos the
conidiophores are 2337 × 46 µm and the
conidia are 2786 × 24 µm, which is similar to
those described by Chupp (1954)
[conidiophores 1040 × 24 µm and conidia
2075 × 24 µm].
Literature Chupp (1954: 47),
Vasudeva (1963: 121), Braun (1995: 193).
Fig. 100 Pseudocercospora ho1arrhenae on
Holarrhena curtisii: 1. Stroma with attached
conidiophores. 2. Conidiophore. 36.
Conidia. Bar = 10 µm.
(51) Pseudocercospora jussiaeae (G.F. Atk.)
Deighton, Mycol. Pap. 140: 146, 1976. Figs
102103.
Cercospora jussiaeae G.F. Atk., J.
Elisha Mitchell Sci. Soc. 8: 50, 1892.
Cercospora ludwigiae G.F. Atk., J.
Elisha Mitchell Sci. Soc. 8: 58, 1892.
Leaf spots circular or irregular, 17
mm diam., dingy grey to brown or reddish
brown to bright red in the center, and with
dark brown margin. Caespituli amphigenous,
inconspicuous. Mycelium internal; internal
hyphae 14 µm wide (
x
= 2.26 µm, n = 23),
Fig. 101 Pseudocercospora holarrhenae on
Holarrhena curtisii from leaf spots: 12.
Lesions on host leaves (1. upper surface and 2.
lower surface). 3. Caespituli. 45. Stromata
with attached conidiophores. 610. Conidia.
Bars 12 = 10 mm, 410 = 10 µm.
septate, 512 µm (
x
= 7.70 µm, n = 23), pale
brownish to subhyaline, wall 0.20.5 µm wide
(
x
= 0.25 µm, n = 20), smooth, forming plate-
like plectenchymatous stromatic hyphal
aggregations. Stromata well-developed,
ellipsoidal, 1125 µm diam. (
x
= 15.84 µm, n =
25), dark brown, stromatal cell 35 µm wide (
x
= 3.57 µm, n = 30), wall 0.51 µm wide (
x
=
0.6 µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (112 per
fascicle), cylindrical, erect, straight or curved,
branched, 547 × 26 µm (
x
= 29.75 × 3 µm, n
= 28), 03-septate, distance between septa 525
µm (
x
= 11 µm, n = 13), pale to medium brown
near the base, upper half pale in colour, wall
0.40.6 µm wide (
x
= 0.48 µm, n = 13),
smooth, small rounded to subconic tips.
Conidiogenous cells terminal, 315 µm,
cylindrical and pale brown or greenish;
conidiogenous loci inconspicuous, unthickened,
not darkened, only outer rim slightly darkened
and visible as minute rings up to 1 µm. Conidia
solitary, narrowly obclavate, variously curved,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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some conidia have an occasionally with lateral
branches, 492 × 24 µm (
x
= 39 × 3 µm, n =
30), 18-septate, subhyaline to pale olivaceous,
wall 0.30.8 µm wide (
x
= 0.59 µm, n = 30),
smooth; apex subacute; base long obconically
truncate, 12 µm wide (
x
= 1.78 µm, n = 9),
wall 0.51 µm wide (
x
= 0.73 µm, n = 9),
thickened and darkened.
Colonies on PDA after three weeks at
25 °C with spreading mycelium, surface ridged,
white-grey in the centre and grey margin,
reaching 1027 mm diam., hyphae 15 µm (
x
= 2.7 µm, n = 30), septate, distance between
septa 527 µm (
x
= 15.36 µm, n = 30), wall
thin, 0.50.8 µm (
x
= 0.58 µm, n = 12),
constricted at the septa, hyaline or brownish,
smooth. Conidia not formed in culture.
Hosts Ludwigia adscendens (L.) Hara,
L. octovalvis (Jacq.) P.H. Raven, L. prostrata
Roxb. (Onagraceae).
Distribution Asia: Japan, Laos;
Oceania: American Samoa.
Material examined Vientiane Capital,
Xaythany District, Xay Village, rice paddy, on
leaves of Ludwigia prostrata, 2 April 2006, P.
Phengsintham (P3); on leaves of Ludwigia
adscendens, 11 July 2009, P. Phengsintham
(P427).
Notes Ludwigia prostrata is the type
host of Pseudocercospora yoshinagiana
(Chupp) U. Braun & Crous, but the collection
from Laos has much shorter conidiophores and
conidia than those the latter species described
from Japan (Chupp 1954) [conidiophores 20
125 × 34 µm and conidia 30100 × 34 µm].
However, the fungus collected in Laos agrees
well with P. jussiaeae, which is widespread on
numerous Jussiaea and Ludwigia species.
Literature Chupp (1954: 423), Crous
& Braun (2003: 43).
(52) Pseudocercospora lythracearum (Heald &
F.A. Wolf) X.J. Liu & Y.L. Guo, Acta Mycol.
Sin. 11: 294, 1992. Figs 104105.
Cercospora lythracearum Heald &
F.A. Wolf, Mycologia 3: 18, 1911.
Cercosporina lythracearum (Heald &
F.A. Wolf) Sacc., Syll. Fung. 25: 909, 1931.
= Cercospora lagerstroemiae Syd. & P.
Syd., Ann. Mycol. 12: 203, 1914.
Fig. 102 Pseudocercospora jussiaeae on
Ludwigia prostrata: 13. Conidiophores. 4.
Stroma with attached conidiophores. 59.
Conidia. Bars = 10 µm.
Fig. 103 Pseudocercospora jussiaeae on
Ludwigia prostrata: 12 Lesions on host
leaves (1. upper surface and 2. lower
surface). 3. Stroma. 47. Stromata with
attached conidiophores. 816. Conidia. 17.
Culture. Bars 12, 17 = 10 mm, 316 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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= Cercospora lagerstroemiae-
subcostatae Sawada, Taiwan Agric. Res. Inst.
Rept. 51: 129, 1931.
Pseudocercospora lagerstroemiae-
subcostatae (Sawada) Goh & W.H. Hsieh, in
Hsieh & Goh, Cercospora and similar fungi
from Taiwan: 212, 1990.
= Cercospora lagerstroemiicola
Sawada, Taiwan Agric. Res. Inst. Rept. 85: 112,
1943. Leaf spots subcircular to irregular, 212
mm diam., at first brown, and than grey-brown
in the centre, brown to dark brown at the
margin. Caespituli amphigenous, conspicuous,
scattered, grey. Mycelium internal,
inconspicuous. Stromata oval to ellipsoidal, 8
49 µm diam. (
x
= 27.27 µm, n = 5), brown to
dark brown, stromatal cells oval, ellipsoidal to
angular, 47 µm wide (
x
= 5.52 µm, n = 10),
dark brown, wall 0.50.8 µm wide (
x
= 0.65
µm, n = 10), smooth. Conidiophores fasciculate
or solitary, arising from stromata (14 per
fascicle), not geniculate, unbranched, 516 × 3
5 µm (
x
= 11.17 × 3.64 µm, n = 7), 01-
septate, slightly constricted at the septa,
distance between septa 213 µm long (
x
= 6.96
µm, n = 6), uniformly pale to medium brown,
much paler and narrower towards the tip, wall
0.30.5 µm (
x
= 0.36 µm, n = 6), smooth.
Conidiogenous cells terminal, 513 × 35 µm
(
x
= 8.97 × 3.67 µm, n = 6), apex obtuse,
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 3652 × 23 µm (
x
= 45.24 × 2.22 µm, n = 10), 35-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
=
0.36 µm, n = 10), smooth, tip subacute, base
obconically truncate, hila 12 µm wide (
x
=
1.18 µm, n = 10).
Hosts Lagerstroemia flos-reginae
Retz., L. indica L., L. macrocarpa Wall., L.
parviflora Roxb., L. speciosa (L.) Pers., L.
subcostata Koehne (Lythraceae).
Distribution Africa: Mauritius,
Uganda; Asia: Brunei, China, Hong Kong,
India, Japan, Korea, Myanmar, Philippines,
Taiwan, Thailand; Europe: Bulgaria; North
America and West Indies: Dominican
Republic, Panama, Puerto Rico, Trinidad and
Tobago, USA (FL, TX), Virgin Islands;
Oceania: Papua New Guinea.
Material examined Vientiane Capital
Province, Xaythany District, Xay Village, on
leaves of Lagerstroemia macrocarpa, 20
August 2011, P. Phengsintham (P659).
GenBank accession no (ITS, KC677904).
Notes The collection from Laos differs
to the description of Pseudocercospora
published by Hsieh & Goh (1990) in having
short conidiophores and conidia.
Literature Saccardo (1931: 883, 909),
Chupp (1954: 361), Vasudeva (1963: 138),
Katsuki (1965: 44), Hsieh & Goh (1990: 212),
Guo & Hsieh (1995: 189190), Shin & Kim
(2001: 204), Crous & Braun (2003: 259).
Fig. 104 Pseudocercospora lythracearum on
Lagerstroemia macrocarpa: 1. Stroma with
attached conidiophores. 23. Conidiophores.
47. Conidia. Bar = 10 µm.
(53) Pseudocercospora macarangae (Syd. & P.
Syd.) Deighton, Mycol. Pap. 140: 47, 1976.
Figs 106107.
Cercospora macarangae Syd. & P.
Syd., Ann. Mycol. 12: 575, 1914.
Cercospora macarangae J.M. Yen &
Lim, Bull. Trimestriel Soc. Mycol. France. 86:
749, 1971.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Leaf spots subcircular to irregular, 125
mm diam., at first yellowish, later becoming
brown, dark brown in the center, brown to dark
brown at the margin. Caespituli hypophyllous,
conspicuous. Mycelium internal, inconspicuous.
Stromata oval to ellipsoidal, 3545 µm diam.
(
x
= 41 µm, n = 6), brown to dark brown,
stromatal cells oval, ellipsoidal and angular, 5
9 µm wide (
x
= 6.6 µm, n = 30), dark brown,
wall 0.50.8 µm wide (
x
= 0.54 µm, n = 30),
smooth. Conidiophores fasciculate, arising from
stromata (931 per fascicle), up to 1015 in a
divergent or coremoid fascicle, geniculate,
unbranched, 30210 × 45 µm (
x
= 119 × 4.29
µm, n = 30), 16-septate, slightly constricted at
the septa, distance between septa 835 µm long
(
x
= 21.6 µm, n = 30), uniformly pale to
medium brown, much paler and more narrow
toward the tip, wall 0.50.8 µm (
x
= 0.66 µm,
n = 30), smooth. Conidiogenous cells terminal,
1014 × 34 µm (
x
= 12.5 × 3.25 µm, n = 15),
apex obtuse, conidiogenous loci inconspicuous,
unthickened, not darkened. Conidia solitary,
obclavate, straight to slightly curved, 2258 ×
Fig. 105 Pseudocercospora lythracearum on
Lagerstroemia macrocarpa from leaf spots: 1
2. Lesions on host leaves (1. upper surface and
2. lower surface). 34. Stromata with attached
conidiophores. 57. Conidia. Bars 12 = 10
mm, 37 = 10 µm.
35 µm (
x
= 35.54 × 3.8 µm, n = 30), 15-
septate, pale olivaceous-brown, wall 0.30.5
µm wide (
x
= 0.48 µm, n = 30), smooth, tip
obtuse, base subtruncate or obconically
truncate, hilla 12 µm wide (
x
= 1.8 µm, n =
30). Hosts Macaranga denticulata (Blume)
Müll. Arg., M. grandifolia (Blanco) Merr., M.
indica Wight, M. peltata Roxb., M. tanarius
(L.) Müll. Arg. (Euphorbiaceae).
Distribution Asia: China, India, Laos,
Philippines, Singapore, Taiwan.
Material examined Luangnamtha
Province, Luangnamtha District, Chaleunsouk
Village, fallow forest, on leaves of Macaranga
denticulata, 19 February 2010, P. Phengsintham
(P564).
Notes The collection from Laos agrees
well with the description of Pseudocercospora
macaranga published by Hsieh & Goh (1990).
Literature Saccardo (1931: 876),
Chupp. (1954: 223), Deighton (1976: 47), Yen
& Lim (1980: 180), Hsieh & Goh (1990: 123),
Guo & Hsieh (1995: 108), Crous & Braun
(2003: 259).
Fig. 106 Pseudocercospora macarangae on
Macaranga denticulata: 1. Stroma with attached
conidiophores. 26. Conidia. Bar = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 107 Pseudocercospora macarangae on
Macaranga denticulata from leaf spots: 12.
Lesions on host leaves (1. upper surface. 2.
lower surface). 3. Caespituli. 45. Stromata with
attached conidiophores. 6. Apices of
conidiophores. 710. Conidia. Bars 12 = 10
mm, 410 = 10 µm.
(54) Pseudocercospora maesae (Hansf.) X.J.
Liu & Y.L. Guo, Acta Mycol. Sin. 11: 295,
1992. Figs 108109.
Cercospora maesae Hansf., Proc.
Linn. Soc. London 19421943: 53, 1943.
Leaf spots subcircular to irregular, 134
mm diam., at first yellowish, later becoming
brown to dark brown in the center, brown to
brown-yellowish at the margin. Caespituli
amphigenous, conspicuous. Mycelium internal,
inconspicuous. Stromata oval to ellipsoidal, 15
56 µm diam., brown to dark brown, stromatal
cells ellipsoidal and angular, 410 µm wide (
x
= 6 µm, n = 9), dark brown, wall 0.50.8 µm
wide (
x
= 67 µm, n = 9), smooth.
Conidiophores fasciculate, arising from
stromata (up to 16 per fascicle), geniculate,
unbranched, 2546 × 46 µm (
x
= 35.9 × 4.86
µm, n = 7), 24-septate, slightly constricted at
the septa, distance between septa 518 µm long
(
x
= 11.3 µm, n = 13), uniformly pale to
medium brown, much paler and more narrow
toward the tip, wall 0.50.8 µm (
x
= 0.64 µm,
n = 13), smooth. Conidiogenous cells terminal,
813 × 45 µm (
x
= 9.67 × 4.83 µm, n = 6),
apex obtuse, conidiogenous loci inconspicuous,
unthickened, not darkened. Conidia solitary,
obclavate, straight to slightly curved, 7095 ×
33.5 µm (
x
= 81.4 × 3.1 µm, n = 5), 69-
septate, pale olivaceous-brown, wall 0.30.5
µm wide (
x
= 0.34 µm, n = 5), smooth, tip
subacute, base obconically truncate, hilla 1.52
µm wide (
x
= 1.75 µm, n = 5).
Colonies on PDA after 3 weeks at 25°C
dark grey mycelium, reaching 68 mm diam.,
hyphae 25 µm wide (
x
= 3.53 µm, n = 15),
septate, constricted at the septa, distance
between septa 818 µm (
x
= 12.46 µm, n =
15), brownish or subhyaline, wall 0.30.5 µm
wide (
x
= 0.42 µm, n = 15), smooth. Conidia
not formed in culture.
Hosts Maesa hupehensis Rehd., M.
indica (Roxb.) DC., M. lanceolata Forssk., M.
ramentacea (Roxb.) A. DC., Myrsine africana
L. (Myrsinaceae).
Distribution Africa: Uganda; Asia:
China, India, Laos; North America and West
Indies: Cuba, USA (FL).
Material examined Luangnamtha
Province, Luangnamtha District, Chaleunsouk
Village, fallow forest, on leaves of Maesa
ramentacea, 20 February 2010. P.
Phengsintham (P575).
Notes The collection from Laos agrees
with the description of Pseudocercospora
maesae in Guo & Goh (1995) [conidiophores
440 × 35 µm and conidia 25100 × 35 µm]
Literature Chupp. (1954: 404), Guo &
Hsieh (1995: 221), Crous & Braun (2003: 263).
(55) Pseudocercospora mannanorensis
Bagyan., U. Braun & Jagad. var.
paucifasciculata Phengsintham, E.
Chukeatirote, Abdelsalam, K.D. Hyde & U.
Braun, Crypt. Mycol. 31(2): 175, 2010. Figs
110111.
Leaf spots suborbicular to angular, 13
mm diam., grey brown to medium brown in the
centre, and with brown to dark brown margin.
Caespituli amphigenous, scattered. Mycelium
internal, inconspicuous. Stromata developed,
substomatal, subglobular, 1523 µm diam. (
x
=
18.5 µm, n = 4), brown to dark brown, stroma
cells oval, ellipsoidal to angular in outline, 36
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 108 Pseudocercospora maesae on
Maesa ramentacea: 1. Stroma with
attached conidiophores. 23.
Conidiophores. 47. Conidia. Bar = 10 µm.
Fig. 109 Pseudocercospora maesae on
Maesa ramentacea from leaf spots: 12.
Lesions on host leaves (1. upper surface
and 2. lower surface). 3. Caespituli. 45.
Stromata with attached conidiophores. 69.
Conidia. 1011. Culture. Bars: 12, 10 =
10 mm, 49 = 10 µm, 10. = 10 mm.
µm wide (
x
= 4.53 µm, n = 17), dark brown,
wall 0.30.5 µm wide (
x
= 0.39 µm, n = 17),
smooth. Conidiophores fasciculate, arising from
stromata (510 per fascicle), erect, straight or
curved, unbranched, aseptate, i.e. conidiophores
reduced to conidiogenous cells. Conidiogenous
cells 610 × 1.53 µm (
x
= 7.75 × 2.13 µm, n
= 8), aseptate, wall 0.30.5 µm wide (
x
= 0.33
µm, n = 8), smooth, apex obtuse, pale
olivaceous or brown; conidiogenous loci
inconspicuous. Conidia solitary, subcylindrical
to narrowly obclavate, straight to moderately
curved, 2769 × 13 µm (
x
= 49.38 × 1.95 µm,
n = 13), 15septate, occasionally slightly
constricted at the septa, pale olivaceous, wall
0.20.3 µm wide (
x
= 0.28 µm, n = 13),
smooth, subacute to obtuse at the apex, base
obconically truncate, 11.5 µm wide (
x
= 1.3
µm, n = 5), wall 0.20.3 µm (
x
= 0.28 µm, n =
5) thick.
Colonies on PDA after 3 weeks at 25°C
dark brown in the centre and brown-green
margin, reaching 410 mm diam.; hyphae 25
µm wide (
x
= 3.6 µm, n = 30), septate, distance
between septa 740 µm (
x
= 19.21 µm, n =
30), primary mycelium brownish, but the
second and following ones hyaline, wall smooth
or verruculose. Conidia not formed in culture.
Hosts Microcos paniculata L. (
Grewia microcos L.) (Tiliaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Nong Viengkham Village,
on leaves of Microcos paniculata, 13 May
2006, P. Phengsintham (P45, MFLU 12-2202,
holotype); ibid., 20 December 2009, P.
Phengsintham (P488).
Notes The collection from Laos is
similar to Pseudocercospora mannanorensis
described by Bagyanarayana et al. (1995) on
Grewia sp. from India, but can only tentatively
be assigned to this species since obvious
differences in the size and length of
conidiophores are evident. Pseudocercospora
mannanorensis has much longer, 02-septate,
subhyaline, pale greenish to olivaceous
conidiophores, 1550 × 1.53 µm, arranged in
dense, very rich fascicles (up to more than 100).
The conidia are solitary, subcylindrical to
narrowly obclavate, straight to somewhat
curved, 4080 × 24 µm, subhyaline to pale
greenish or olivaceous, i.e. they agree well the
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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fungus on M. paniculata. The status of the
fungus from Laos is, however, uncertain. The
features of the lesions and conidia agree well
with P. mannanorensis, but the conidiophores
are much shorter and only formed in small
fascicles. It is unclear if two distinct species are
involved or if these differences have been
caused by the host plant or a possible
immaturity of the sample. Additional
collections are necessary to prove the
consistency of the conidiophore characters on
Microcos paniculata, but due to the obvious
differences we prefer to introduce a new variety
for this fungus.
Literature Bagyanarayana et al.
(1995), Crous & Braun 2003 (key).
Fig. 110 Pseudocercospora mannanorensis
var. paucifasciculata on Microcos paniculata: 1.
Stroma with attached conidiophores. 2.
Conidiophore. 38. Conidia. Bar = 10 µm.
(56) Pseudocercospora melochiae (Henn.)
Deighton, Mycol. Pap. 140: 147, 1976. Figs
112113.
Cercospora melochiae Henn.,
Hedwigia 43: 395, 1904.
= Cercospora guineensis J. Kranz,
Sydowia 19: 76, (1965) 1966.
Leaf spots oval or irregular, 13 mm
diam., with brown to dark brown and yellowish
margin. Caespituli amphigenous, inconspicuous.
Mycelium internal and external. Internal hyphae
branched, 14 µm wide (
x
= 2.7 µm, n = 7),
septate, constricted at the septa, distance
between septa 410 µm (
x
= 6.43 µm, n = 7),
subhyaline or hyaline, wall 0.20.3 µm wide (
x
= 0.26 µm, n = 7), smooth; external hyphae
branched, 13 µm wide (
x
= 1.8 µm, n = 12),
septate, constricted at the septa, distance
between septa 619 µm (
x
= 11.7 µm, n = 12),
brown, wall 0.250.3 µm wide (
x
= 0.26 µm, n
= 7), smooth. Stromata developed, substomatal,
subglobose, 1226 µm diam., brown to dark
brown, stromatal cells oval, ellipsoidal to
angular in outline, 36 µm wide (
x
= 4.87 µm, n
= 30), dark brown, wall 0.51 µm wide (
x
=
0.66 µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (317 per
fascicle), and secondary conidiophores borne
terminally and laterally on external mycelial
hyphae, very variable in length even when
formed on a single hypha , erect, straight or
curved, unbranched, obtuse, 825 × 34 µm (
x
Fig. 111 Pseudocercospora mannanorensis
var. paucifasciculata on Microcos paniculata:
12. Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Caespituli. 4. Stromata with
attached conidiophores. 5. Stroma. 68. Conidia.
9. Culture. Bars 12, 9 = 10 mm, 48 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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= 17 × 3.77 µm, n = 30), 01-septate, distance
between septa 516 µm (
x
= 11 µm, n = 14),
pale to medium brown, wall 0.57 µm wide,
smooth. Conidiogenous cells integrated, obtuse,
1216 × 34 µm, pale olivaceous or brown;
conidiogenous loci inconspicuous. Conidia
solitary, subcylindrical, slightly obclavate-
cylindrical, or sometimes slightly clavate-
cylindrical, almost straight or slightly to
strongly curved, 49132 × 35 µm (
x
= 87.84
× 4.44 µm, n = 30), 511-septate, slightly
constricted at the septa, pale olivaceous, wall
0.50.8 µm thick (
x
= 0.51 µm, n = 30),
smooth, apex subacute or broadly rounded, base
long obconically truncate or obconic.
Hosts Melochia corchorifolia L., M.
lupulina Sw., M. melissifolia Benth., M.
odorata L. f., Waltheria american L. and W.
indica L. (Malvaceae, incl. Sterculiaceae).
Distribution Africa: Gabon, Ghana,
Guinea, Sierra Leone, Sudan; Asia: India, Laos;
North America and West Indies: Dominican
Republic, El Salvador, Jamaica, USA (GA);
Oceania: Papua New Guinea; South America:
Brazil, Columbia,
Material examined Vientiane Capital,
Xaythany District, Xay Village, rice paddy, on
leaves of Melochia corchorifolia, 3 May 2006,
P. Phengsintham (P30).
Notes The collection from Laos agrees
well with the description of Pseudocercospora
melochiae published by Chupp (1954)
[conidiophores pale to medium in colour, 35
µm in width, conidia 40150 × 24.5 µm].
Literature Chupp (1954: 556557),
Crous & Braun (2003: 271)
(57) Pseudocercospora micromeli sp. nov.
Figs 114115.
MycoBank, MB 801728
Morphologically somewhat similar to
Pseudocercospora glycosmidis but leaf spots
not vein-limited, stromata much larger (3060
µm), conidiophores in larger fasciles (up to 27),
shorter (718 µm) and superficial hyphae with
solitary conidiophores lacking.
Leaf spots subcircular to irregular, 210
mm diam., at first yellowish, than becomes
brown to dark brow in the centre, brown to
brown yellowish at the margin. Caespituli
amphigemous, conspicuous. Mycelium internal,
inconspicuous.
Fig. 112 Pseudocercospora melochiae on
Melochia corchorifolia: 1. Stroma with attached
conidiophores. 25. Conidiophores. 6. External
mycelium with attached conidiophore. 710.
Conidia. Bar = 10 µm.
Fig. 113 Pseudocercospora melochiae on
Melochia corchorifolia from leaf spots: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Internal mycelium. 45.
Stromata with attached conidiophores. 6.
Conidiophore. 7. External mycelium with
attached young conidiophore. 813. Conidia.
Bars 12 = 10 mm, 313 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Stromata oval to ellipsoidal, 3060 µm diam.,
brown to dark brown, stromatal cells oval,
ellipsoidal to angular, 37 µm wide (
x
= 5.2
µm, n = 12), dark brown, wall 0.30.5 µm wide
(
x
= 0.38 µm, n = 12), smooth. Conidiophores
fasciculate, arising from stromata (up to 27 per
fascicle), unbranched, not geniculate, 718 × 3
4 µm (
x
= 12.5 × 3.5 µm, n = 10), 02-septate,
slightly constricted at the septa, distance
between septa 710 µm long (
x
= 8.33 µm, n =
15), uniformly pale to medium brown, much
paler and narrower towards the tip, wall 0.50.8
µm (
x
= 0.6 µm, n = 15), smooth.
Conidiogenous cells terminal, 78 × 33.5 µm
(
x
= 7.5 × 3.25 µm, n = 6), apex obtuse,
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 2764 × 23 µm (
x
=
44.6 × 2.5 µm, n = 15), 14-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
=
0.37 µm, n = 15), smooth, tip subacute, base
obconically truncate, hila 0.51 µm wide (
x
=
0.8 µm, n = 15).
Colonies on PDA after 3 weeks at 25°C
with dark green mycelium, reaching 47 mm
diam. Hosts Micromelum hirsutum Oliv.
(Rutaceae).
Distribution Asia: Laos.
Material examined Khammoune
Province, Nakai District, Nahao Village, fallow
forest, on leaves of Micromelum hirsutum, 3
June 2010, P. Phengsintham (P582, MFLU12-
2203, Holotype).
Notes The Indian Pseudocercospora
glycomidis is somewhat similar, above all its
conidia, but this species forms vein-limited leaf
spots, has smaller stromata (20 µm), small
fascicles of longer conidiophores (16, up to
42.5 µm long) and forms superficial hyphae
with solitary conidiophores (Mandal 1978).
Literature Crous & Braun (2003: key).
(58) Pseudocercospora musae (Zimm.)
Deighton, Mycol. Pap. 140: 148, 1976. Figs
116117.
Cercospora musae Zimm., Centralbl.
Bacteriol., Abt. 2, 8: 219, 1902.
= Cercospora musae Massee, Bull.
Misc. Inform. 28: 159, 1914.
Fig. 114 Pseudocercospora micromeli on
Micromelum hirsutum: 1. Stroma with
attached conidiophores. 24. Conidiophores.
58. Conidia. Bar = 10 µm.
Fig. 115 Pseudocercospora micromeli on
Micromelum hirsutum from leaf spots: 12.
Lesions on host leaves (1. upper surface and 2.
lower surface). 3. Caespituli. 4. Stromata. 5.
Stroma with attached conidiophores. 6.
Conidiophore. 710. Conidia. 11. Culture.
Bars: 12, 11 = 10 mm, 410 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
117
Mycosphaerella musicola R. Leach,
J.L. Mulder & R.H. Stover, Trans. Brit. Mycol.
Soc. 67: 77, 1976.
Leaf spots circular to irregular, 115
mm diam., brown to dark brown in the centre,
with a brown to brown-greenish margin.
Caespituli amphigenous, scattered, brown.
Mycelium internal, inconspicuous. Stromata
more developed, substomatal, subglobular, 12
65 µm diam. (
x
= 37.6 µm, n = 8), brown to
dark brown, stromatal cells oval, ellipsoidal to
angular in outline, 510 µm wide (
x
= 6.9 µm,
n = 16), dark brown, wall 0.50.8 µm wide (
x
= 0.65 µm, n = 16), smooth. Conidiophores
solitary or fasciculate, arising from stromata (6
13 per fascicle), erect, straight or curved,
unbranched, 1022 × 56 µm (
x
= 15.2 × 5.67
µm, n = 6), 01-septate, distance between septa
715 µm (
x
= 9.83 µm, n = 6), pale to
moderately olivaceous-brown, wall 0.30.5 µm
wide (
x
= 0.47 µm, n = 6), smooth.
Conidiogenous cells integrated, subtruncate, 9
15 × 46 µm (
x
= 12.7 × 5.5 µm, n = 6), pale
olivaceous or brown; conidiogenous loci
inconspicuous. Conidia solitary, obclavate,
straight to moderately curved, 1970 × 35 µm
(
x
= 46.41 × 4.23 µm, n = 17), 17-septate,
slightly constricted at the septa, pale olivaceous,
wall 0.30.5 µm wide (
x
= 0.45 µm, n = 17),
smooth, bluntly rounded at the apex, with
subtruncate base, basal hila 1.52 µm wide (
x
= 1.91 µm, n = 17), wall 0.30.5 µm (
x
= 0.47
µm, n = 17) thick.
Hosts Musa acuminata Colla (= M.
cavendishii, M. nana), M. banksii F. Muell., M.
basjoo Siebold & Zucc. ex Iinuma, M.
liukiuensis Colla, M. paradisiaca L. (= M.
sapientum L.), M. textilis L., Ensete ventricosa
(Welw.) Cheesman (Musaceae).
Distribution Africa: Angola,
Cameroon, Cape Verde, Congo, Egypt,
Ethiopia, Gabon, Ghana, Guinea, Guinea-
Bissau, Ivory Coast, Kenya, Madagascar,
Nigeria, São Toand Príncipe, Sierra Leone,
Somalia, South Africa, Tanzania, Togo,
Tunisia, Uganda Zambia, Zimbabwe; Asia:
Bhutan, Brunei, Cambodia, China, Hong Kong,
India, Indonesia, Laos, Nepal, Philippines, Sri
Lanka, Taiwan, Thailand, Vietnam, Yemen;
North America and West Indies: Antigua and
Barbuda, Bahamas, Barbados, Belize, Costa
Rica, Cuba, Cayman Islands, Dominican
Republic, El Salvador, Grenada, Guatemala,
Haiti, Honduras, Jamaica, Nicaragua, Panama,
Saint Kitts and Nevis, Saint Lucia, Saint
Vincent and the Grenadines, USA (FL, HI);
Australia; Oceania: American Samoa, Fiji,
French Polynesia, Kiribati, Palau, Papua New
Guinea, Samoa, Solomon Islands, Tonga,
Vanuatu, Wallis and Futuna Islands; South
America: Argentina, Bolivia, Brazil, Colombia,
Ecuador, French Guiana, Guyana, Peru,
Suriname, Venezuela,.
Material examined Vientiane Capital,
Xaythany District, Xay Village, garden, on
leaves of Musa paradisiaca, 29 July 2006, P.
Phengsintham (P113). GenBank accession no
(ITS, KC677908).
Notes The collection from Laos agrees
with the description of Pseudocercospora
musae published by Ellis (1971), Hsieh & Goh
(1990) and Guo & Hsieh (1995) [conidiophores
545 × 35 µm and conidia 1070 × 46 µm].
Literature Chupp (1954: 402), Hsieh
& Goh (1990: 243), Guo & Hsieh (1995: 218),
Guo et al. (1998: 230231), Crous & Braun
(2003: 286).
Fig. 116 Pseudocercospora musae on Musa
paradisiaca: 1. Stroma with attached
conidiophores. 27. Conidia. Bars = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 117 Pseudocercospora musae on Musa
paradisiaca from leaf spots: 1. Lesions on host
leaf (upper surface). 23. Stromata with
attached conidiophores. 47. Conidia. Bars 1 =
10 mm, 27 = 10 µm.
(59) Pseudocercospora nigricans (Cooke)
Deighton, Mycol. Pap.140: 149, 1976. Figs
118119.
= Cercospora nigricans Cooke,
Grevillea 12: 30, 1883.
Leaf spots circular to irregular, 26 mm
diam., pale brown or dark brown in the centre,
and with yellow margin. Caespituli
amphigenous, inconspicuous. Mycelium
internal. Stromata oval or ellipsoidal, 1040 µm
diam. (
x
= 16.3 µm, n = 10), dark brown,
stromatal cells angular in outline, 38 µm wide
(
x
= 4.5 µm, n = 30), wall 0.51 µm (
x
= 0.77
µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (310 per
fascicle), emerging through stomata, branched,
one time geniculate, cylindrical, 1569 × 35
µm (
x
= 43.6 × 4.33 µm, n = 30), 06-septate,
distance between septa 519 µm (
x
= 12.3 µm,
n = 30), uniformly pale to medium olivaceous
brown, wall 0.51 µm wide (
x
= 0.65 µm, n =
24), smooth. Conidiogenous cells integrated,
terminal, cylindrical, 1028 × 34 µm (
x
=
20.17 × 3.4 µm, n = 29); conidiogenous loci
small, at the lateral and apex, conspicuous,
slightly thickened, but distinctly darkened, 1.5
2 µm, wall 0.50.8 µm. Conidia solitary,
obclavate or cylindrical, entire and verruculose,
straight to curved, 1053 × 2.54 µm (
x
= 30.4
× 3.2 µm, n = 26), 05-septate, pale olivaceous
brown, wall 0.30.5 µm wide (
x
= 0.44 µm, n
= 23), smooth, tip subobtuse, base obconically
truncate, hila 12 µm wide (
x
= 1.68 µm, n =
8), wall 0.51 µm (
x
= 0.78 µm, n = 8),
thickened and darkened.
Hosts Cassia acutifolia Delile, C.
auriculata L., C. fasciculata Michx., C. fistula
L., C. grandis L. f., C. renigera Wall., C. torosa
Cav., Cassia sp., Chamaecrista nictitans (L.)
Moench, Macroptilium lathyroides (L.) Urb.,
Senna alata (L.) Roxb., S. marilandica (L.)
Link, S. obtusifolia (L.) H.S. Irwin & Barneby,
S. occidentalis (L.) Link, S. sophera (L.) Roxb.,
S. tora (L.) Roxb. (Fabaceae).
Distribution Africa: Gabon,
Mauritius, Sudan, Tanzania; Asia: China, India,
Japan, Laos, Malaysia, Myanmar, Pakistan,
Philippines, Sabah, Taiwan; North America
and West Indies: Cuba, Puerto Rico, Trinidad
& Tobago, USA (AI, FL, LA, MO, MS, SC,
TX, WI, WV), Virgin Islands; Oceania:
Kiribati, Solomon Islands, Tonga, Vanuatu;
South America: Brazil, Colombia.
Material examined Vientiane Capital,
Xaythany District, Dong Dok Village, on leaves
of Cassia occidentalis, 25 July 2006, P.
Phengsintham (P108); Dong Dok village, on
leaves of C. occidentalis, 9 December 2008, P.
Phengsintham (P382).
Notes The identification of the Laos
collections is rather difficult as they do not
agree in all details with any of the numerous
Pseudocercospora species described on Cassia
and Senna, but can be tentatively assigned to
Pseudocercospora nigricans, although they
differ from this species, as keyed out in Braun
(1989), in having somewhat larger stromata and
narrower, sometimes verruculose conidia [10
53 × 2.54 µm (
x
= 30.4 × 3.2 µm, n = 26),
versus (15)2065(80) × 3.56 µm].
Pseudocercospora cassia-occidentalis (J.M.
Yen) J.M. Yen, considered to be a possible
synonym of P. nigricans in Braun (1989) but
treated as distinct taxon in Crous & Braun
(2003), is distinguished by much longer
conidiophores and conidia (Hsieh & Goh,
1990).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Literature Saccardo (1886: 462; 1892:
644; 1931: 879), Chupp (1954: 321), Ellis
(1976: 267), Hsieh & Goh (1990: 195), Guo &
Hsieh (1995: 172), Crous & Braun (2003: 291).
Fig. 118 Pseudocercospora nigricans on
Senna occidentalis: 1. Stroma with
Conidiophores. 23. Conidiophores. 49.
Conidia. Bar = 5 µm.
(60) Pseudocercospora ocimicola (Petr. & Cif.)
Deighton, Mycol. Pap. 140: 149, 1976. Figs
120121.
Cercospora ocimicola Petr. & Cif.,
Ann. Mycol. 30: 324, 1932.
= Cercospora ocimi Sawada, Unknown
(nom. nud).
Leaf spots subcircular to irregular, 14
mm diam., at first yellowish, later becoming
brown, dingy grey to pale tan, brown to dark
brown at the margin. Caespituli hypophyllous,
conspicuous. Mycelium internal; hyphae
branched, 35 µm wide (
x
= 3.6 µm, n = 5),
septate, constricted at the septa, distance
between septa 719 µm (
x
= 10.6 µm, n = 5),
brownish, subhyaline, wall 0.30.5 µm wide (
x
= 0.46 µm, n = 5), smooth, forming plate-like
plectenchymatous stromatic hyphal
aggregations. Stromata oval to ellipsoidal, 20
23 µm diam., brown to dark brown, stromatal
cells oval, ellipsoidal and angular, 59 µm wide
(
x
= 6 µm, n = 8), dark brown, wall 0.5 µm
wide, smooth. Conidiophores fasciculate,
arising from stromata (14 per fascicle),
geniculate, unbranched, 824 × 35 µm (
x
=
16.1 × 4.06 µm, n = 8), 02septate, slightly
constricted at the septa, distance between septa
510 µm long (
x
= 8.5 µm, n = 10), uniformly
pale to medium brown, much paler and more
narrow toward the tip, wall 0.30.5 µm (
x
=
0.47 µm, n = 10), smooth. Conidiogenous cells
terminal, 810 × 34 µm (
x
= 10.3 × 3.67 µm,
n = 8), apex obtuse, conidiogenous loci
inconspicuous, unthickened, not darkened.
Conidia solitary, obclavate, straight to slightly
curved, 2882 × 34 µm (
x
= 51.8 × 3.4 µm, n
= 8), 27septate, pale olivaceous-brown, wall
0.30.5 µm wide (
x
= 0.46 µm, n = 8), smooth,
tip subacute, base obnically truncate, hilla 1.5
2.5 µm wide (
x
= 2.12 µm, n = 8).
Fig. 119 Pseudocercospora nigricans from
Senna occidentalis from leaf spots: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 34. Stromata with attached
conidiophores. 5. Conidiophore. 611. Conidia.
Bars 12 = 10 mm, 311 = 10 µm.
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Hosts Marsypianthes chamaedrys
(Vahl) Kuntze, Ocimum americanum L., O.
basilicum L., O. micranthum Willd., O.
sanctum L., Ocimum sp. (Lamiaceae).
Distribution Asia: China, India, Laos,
Taiwan; North America and West indies:
Cuba, Dominican Republic; Oceania: Fiji, New
Zealand, Vanuatu; South America: Brazil.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Ocimum tenuiflorum, 4 February 2010, P.
Phengsintham (P541).
Notes In the Laos collection the
conidiophores are 824 × 35 µm and the
conidia are 2882 × 34 µm, which is similar to
those described in Hsieh & Goh (1990)
[conidiophores 1030 × 35 µm, conidia 2570
× 34 µm].
Literature Chupp (1954: 270), Hsieh
& Goh (1990: 155), Guo & Hsieh (1995: 130),
Guo et al. (1998: 144), Crous & Braun (2003:
295).
Fig. 120 Pseudocercospora ocimicola
on Ocimum tenuiflorum: 1. Stroma with
attached conidiophores. 25. Conidia. Bar
= 10 µm.
Fig. 121 Pseudocercospora ocimicola on
Ocimum tenuiflorum from leaf spots: 12.
Lesions on host leaves (1. upper surface and 2.
lower surface). 3. Stroma with attached
conidiophores. 45. Conidiophores. 610.
Conidia. 11. Culture. Bars 12, 10 = 10 mm, 3
9 = 10 µm.
(61) Pseudocercospora paraguayensis (Tak.
Kobay.) Crous, Mycotaxon 57: 270, 1996. Figs
122123.
Cercosporina paraguayensis Tak.
Kobay., Trans. Mycol. Soc. Japan 23: 263,
1984.
= Pseudocercospora eucalypti Goh &
W.H. Hsieh, Cercospora and similar fungi from
Taiwan: 244, 1990.
Leaf spots suborbicular to angular, 215
mm diam., grey-brown to medium brown in the
centre, and with brown to dark brown margin.
Caespituli amphigenous, scattered. Mycelium
internal, inconspicuous. Stromata developed,
substomatal, subglobular, 1420 µm diam. (
x
=
17 µm, n = 5), brown to dark brown, stroma
cells oval, ellipsoidal to angular in outline, 35
µm wide (
x
= 4 µm, n = 30), dark brown, wall
0.50.8 µm wide (
x
= 0.6 µm, n = 30), smooth.
Conidiophores fasciculate, arising from
stromata (47 per fascicle), erect, straight or
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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curved, branched, geniculate, 1053 × 34 µm
(
x
= 24.2 × 3.67 µm, n = 15), 04-septate,
distance between septa 510 µm (
x
= 7.6 µm, n
= 20), pale to moderately olivaceous-brown,
wall 0.50.8 µm wide (
x
= 0.68 µm, n = 20),
smooth. Conidiogenous cells 410 × 34 µm
(
x
= 7.67 × 3.33 µm, n = 5), aseptate, wall 0.5
0.8 µm wide (
x
= 0.6 µm, n = 5), smooth, apex
obtuse, pale olivaceous or brown;
conidiogenous loci inconspicuous. Conidia
solitary, subcylindrical to narrowly obclavate,
straight to moderately curved, 1825 × 24 µm
(
x
= 23 × 2.75 µm, n = 15), 34-septate,
occasionally slightly constricted at the septa,
pale olivaceous, wall 0.30.5 µm wide (
x
=
0.45 µm, n = 15), smooth, subacute to obtuse at
the apex, with obconically truncate base, 11.5
µm wide (
x
= 1.12 µm, n = 5), wall 0.30.5 µm
(
x
= 0.35 µm, n = 5) thick.
Hosts Eucalyptus globulus Labill., E.
nitens H. Deane & Maiden, Eucalyptus sp.
(Myrtaceae).
Distribution Asia: China, Israel, Laos,
Taiwan, Thailand; South America: Brazil,
Paraguay.
Material examined Vientiane Capital,
Xaythany District, Nong Viengkham Village,
on leaves of Eucalyptus sp., 23 December 2008,
P. Phengsintham (P405).
Notes The collection from Laos agrees
well with the description of Pseudocercospora
paraguayensis published by Guo & Hsieh
(1995) and Meeboon (2009), but shorter than P.
paraguayensis described by Meeboon (2009)
[conidiophores 2743 × 2.55 µm, 1220 in a
densely fasciculate, 14-septate; conidia 31.5
60 × 24 µm, 616-septate].
Literature Guo & Hsieh (1995: 221),
Crous & Braun (2003: 307), Meeboon (2009).
(62) Pseudocercospora piperis (Pat.) Deighton,
Mycol. Pap. 140: 150, 1976. Figs 124125.
Cercospora piperis Pat., Bull. Soc.,
Mycol. France 11: 233, 1895.
= Cercospora piperis Ellis & Everh.,
Annual Rep. Missouri Bot. Gard. 9: 119, 1898.
Cercospora pipericola Sacc. & P.
Syd., Syll. Fungi 16: 1073, 1902.
= Cercospora portoricensis Earle,
Muhlenbergia 1: 15, 1901.
Fig. 122 Pseudocercospora
paraguayensis on Eucalyptus sp.: 1. Stroma
with attached conidiophores. 23.
Conidiophores. 49. Conidia. Bar = 10 µm.
Fig. 123 Pseudocercospora
paraguayensis on Eucalyptus sp.: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Caespituli. 45. Stromata
with attached conidiophores. 610. Conidia.
Bars 12, 9 = 10 mm, 410 = 10 µm.
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Leaf spots circular to irregular, 210
mm diam., brown to dark brown in the centre,
with a brown to brown-yellowish margin.
Caespituli hypophyllous, scattered. Mycelium
internal; hyphae branched, 34 µm wide (
x
=
3.2 µm, n = 5), septate, constricted at the septa,
distance between septa 615 µm (
x
= 9 µm, n
= 5), brown to subhyaline, wall smooth.
Stromata more developed, substomatal,
subglobular, 1552 µm diam. (
x
= 27.5 µm, n
= 10), brown to dark brown, stromatal cells
oval, ellipsoidal to angular in outline, 58 µm
wide (
x
= 6.3 µm, n = 30), dark brown, wall
approximately 0.50.8 µm wide (
x
= 0.57 µm,
n = 30), smooth. Conidiophores solitary or
fasciculate, arising from stromata (48 per
fascicle), erect, straight or curved, unbranched,
1075 × 35 µm (
x
= 27.1 × 4.57 µm, n = 15),
03-septate, distance between septa 512 µm
(
x
= 8.6 µm, n = 30), pale to moderately
olivaceous-brown, wall 0.50.8 µm wide (
x
=
0.56 µm, n = 30), smooth. Conidiogenous cells
integrated, subtruncate, cicatrized, 512 × 35
µm (
x
= 8 × 4 µm, n = 15), pale olivaceous or
brown; conidiogenous loci inconspicuous,
smooth. Conidia solitary, obclavate, straight to
moderately curved, 514 × 35 µm (
x
= 9.8 ×
4 µm, n = 20), 25septate, slightly constricted
at the septa, pale olivaceous, wall 0.30.5 µm
wide (
x
= 0.42 µm, n = 20), smooth, bluntly
rounded at the apex, with subtruncate base,
basal hila 11.5 µm wide (
x
= 1.2 µm, n = 20),
wall 0.30.5 µm (
x
= 0.46 µm, n = 20) thick.
Hosts Piper aduncum L., P. auritum
Kunth, P. dilatatum Rich., P. hispidum Sw., P.
jamaicens C. DC., P. lolot C. DC., P. longum
L., P. marginatum Acq., P. nigrum L., P.
peltatum L., P. tuberculatum Jacq., P.
umbellatum L. (Piperaceae).
Distribution Asia: Laos; North
America and West Indies: Cuba, Jamaica,
Puerto Rico, Dominican Republic, Trinidad;
South America: Venezuela.
Material examined Xiengkhouang
Province, Kham District, Napa Village, on
leaves of Piper lolot, 3 January 2010, P.
Phengsintham (P516).
Notes The collection from Laos agrees
with the description of Pseudocercospora
piperis  Cercospora piperis) in Ellis (1976)
[conidiophores 50120 × 46 µm and conidia
Fig. 124 Pseudocercospora piperis on
piper lolot from leaf spots: 1. Stroma with
attached conidiophores. 2. Conidiophores.
36. Conidia. Bar = 10 µm.
Fig. 125 Pseudocercospora piperis on Piper
lolot from leaf spots: 1. Upper surface. 2.
Stroma. 3. Internal mycelium. 4. Stroma with
attached conidiophores. 57. Conidia. 8.
Culture. Bars 1, 8 = 10 mm, 27 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
123
45100 × 46 µm], but it has conidiophores and
conidia that are shorter.
Literature Saccardo (1902: 1073;
1906: 609), Chupp (1954: 442), Ellis (1976:
279), Crous & Braun (2003: 325).
(63) Pseudocercospora polygonicola (A.K. Kar
& M. Mandal) Deighton, Trans. Brit. Mycol.
Soc. 88: 388, 1987. Figs 126127.
Cercospora polygonicola A.K. Kar &
M. Mandal, Trans. Brit. Mycol. Soc. 53: 354,
1969.
Cercospora polygoni Sawada, Rep.
Gov. Agric. Res. Inst. Taiwan 85: 119, 1943.
Leaf spots subcircular to irregular, 15
mm diam., at first yellowish, later becoming
brown in the centre, brown at the margin.
Caespituli amphigenous, conspicuous.
Mycelium internal, inconspicuous. Stromata
oval to ellipsoidal, 13.827 µm diam., brown to
dark brown, stromatal cells oval, ellipsoidal and
angular, 47 µm wide (
x
= 6 µm, n = 30), dark
brown, wall 0.50.8 µm wide (
x
= 0.68 µm, n
= 30), smooth. Conidiophores fasciculate,
arising from stromata (225 per fascicle),
geniculate, unbranched, 3355 × 34.2 µm (
x
=
41.9 × 3.3 µm, n = 30), 12-septate, slightly
constricted at the septa, distance between septa
727.6 µm long (
x
= 15.4 µm, n = 30),
uniformly pale to medium brown, much paler
and more narrow toward the tip, wall 0.50.8
µm (
x
= 0.58 µm, n = 30), smooth.
Conidiogenous cells terminal, 1827 × 33.6
µm (
x
= 24 × 3.4 µm, n = 14), obtuse,
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 5087 × 3.64.2 µm
(
x
= 61.65 × 3.75 µm, n = 15), 35-septate,
pale olivaceous-brown, wall 0.30.5 µm wide
(
x
= 0.45 µm, n = 15), smooth, tip subacute,
base truncate, hilla 0.52 µm wide (
x
= 1.2 µm,
n = 15).
Hosts Polygonum barbatum L., P.
hydropiper L., P. pulchrum Blume
(Polygonaceae).
Distribution Asia: China, India, Laos,
Taiwan.
Material examined Oudomxay
Province, Ngoi District, Ngoi Village, on leaves
of Polygonum pulchrum, 24 June 2010, P.
Phengsintham (P599). GenBank accession no
(LSU, KC677936).
Notes The collection from Laos agrees
with the description of Pseudocercospora
polygonicola published by Hiseh & Goh (1990)
[conidiophores 2540 × 34 µm and conidia
40100 × 34.5 µm], but the collection from
Laos has slightly geniculate conidiophores.
Literature Hsieh & Goh (1990: 270),
Guo & Hsieh (1995: 255), Crous & Braun
(2003: 332).
Fig. 126 Pseudocercospora polygonicola on
Polygonum pulchrum: 1. Stroma with attached
conidiophores. 24. Conidiophores. 58.
Conidia. Bar = 10 µm.
(64) Pseudocercospora puerariicola (W.
Yamam.) Deighton, Mycol. Pap. 140: 151,
1976. Figs 128129.
Cercospora puerariicola W.
Yamam., Trans. Sapporo Nat. Hist. Soc. 13:
142, 1934.
Leaf spots circular to irregular, 16
mm diam., grey-brown to medium brown in
the centre, and with brown to dark-brown
margin. Caespituli amphigenous, scattered.
Mycelium internal; hyphae branched, 24 µm
wide (
x
= 2.93 µm, n = 14), septate,
constricted at the septa, distance between septa
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Fig. 127 Pseudocercospora polygonicola on
Polygonum pulchrum from leaf spots: 1.
Lesions on host leaf (lower surface). 2. Stroma
with attached conidiophores. 3. Conidiophore.
49. Conidia. Bars = 10 µm.
414 µm (
x
= 9.14 µm, n = 14), subhyaline or
hyaline, wall 0.30.8 µm wide (
x
= 0.5 µm, n =
14), smooth. Stromata well developed,
substomatal, subglobular, 1040 µm diam. (
x
=
23.57 µm, n = 10), brown to dark brown,
stromatal cells oval, ellipsoidal to angular in
outline, 410 µm wide (
x
= 5.6 µm, n = 30),
dark brown, wall 0.51 µm wide (
x
= 0.78 µm,
n = 30), smooth. Conidiophores fasciculate,
arising from stromata (430 per fascicle), erect,
straight or curved, branched, 930 × 35 µm (
x
= 20 × 3.8 µm, n = 30), 03-septate, distance
between septa 520 µm (
x
= 9.43 µm, n = 30),
pale to moderately olivaceous brown, paler and
narrower towards the apex, wall 0.50.8 µm
wide (
x
= 0.51 µm, n = 30), smooth.
Conidiogenous cells integrated, obtuse to
subacute, 620 × 34 µm (
x
= 11.8 × 3.4 µm, n
= 30), pale olivaceous or brown; conidiogenous
loci inconspicuous. Conidia solitary, cylindrical
to cylindrical-obclavate, straight to moderately
curved, 682 × 23 µm (
x
= 53.97 × 2.85 µm,
n = 30), 16-septate, slightly constricted at the
septa, pale olivaceous, wall 0.30.5 µm wide
(
x
= 0.47 µm, n = 30), smooth, rounded to
obtuse at the apex, with long obconic to
truncate base, 12 µm wde (
x
= 1.87 µm, n =
30), wall 0.30.5 µm (
x
= 0.43 µm, n = 30)
thick.
Colonies on PDA after 3 weeks at 25 °C
grey-brown, spreading surface ridged and
smooth, 35 mm diam., hyphae 12 µm wide
(
x
= 1.53 µm, n = 30), septate, constricted at
the septa, distance between septa 618 µm (
x
=
10.8 µm, n = 30), subhyaline to greenish brown,
wall 0.20.25 µm wide (
x
= 0.22 µm, n = 30),
smooth. Conidia not formed in culture.
Hosts Pueraria javanica (Benth.)
Benth., P. lobata (Willd.) Ohwi, P.
phaseoloides (Roxb.) Benth., P. thunbergiana
Benth, P. tonkinensis Gagnep. (Fabaceae).
Distribution Asia: Cambodia, China,
Hong Kong, Indonesia, Japan, Korea, Laos,
Malaysia, Philippines, Singapore, Taiwan;
North America: USA (AL, FL, GA, MS, NC).
Material examined Vientiane Capital,
Xaythany District, Nakhae Village, on leaves of
Pueraria phaseoloides, 11 May 2006, P.
Phengsintham (P44). GenBank accession no
(ITS, KC731556; LSU, KC731562).
Notes The collection from Laos is
similar to the description of Pseudocercospora
puerariicola published by Hsieh & Goh (1990)
[conidiophores 2070 × 34.5 µm and conidia
2064 × 34.5 µm].
Literature Chupp (1954: 327), Hsieh
& Goh (1990: 199), Guo & Hsieh (1995: 178),
Crous & Braun (2003: 341).
(65) Pseudocercospora sphaerellae-eugeniae
(Sacc.) Crous, Alfenas & R.W. Barreto,
Mycotaxon 64: 425, 1997 Figs 130131.
Cercosporina sphaerellae-eugeniae
Sacc., Syll. Fung. 25: 912, 1931.
= Cercospora eugeniae Sawada, Rep.
Gov. Agric. Res. Inst. Taiwan 85: 104, 1943.
= Cercospora eugeniae Chupp, Bol.
Soc. Brasil. Argron. 8: 25, 1945.
= Cercospora eugeniae Chupp, A
monograph of the fungus genus Cercospora:
406, 1954.
= Cercospora eugeniae Puckdeedindan,
Techn. Bull. Depart. Agric. (Bangkok) 7: 6,
1966. = Cercospora eugeniae Chantarasrikul
& Puckdeedinnan, Tech. Doc. Pl. Protect.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
125
Committee SE Asia Pacific Region: 72:
15, 1969.
Fig. 128 Pseudocercospora puerariicola on
Pueraria phaseoloides: 12. Stromata with
attached conidiophores. 34. Conidiophores. 5
9. Conidia. Bar = 10 µm.
Fig. 129 Pseudocercospora puerariicola on
Pueraria phaseoloides from leaf spots: 1.
Lesions on host leaf (upper surface). 2. Internal
hyphae. 34. Stromata with attached
conidiophores. 5. Conidiophore. 68. Conidia.
9. Culture. Bars 1, 9 = 10 mm, 28 = 10 µm.
Leaf spots circular to irregular, 210
mm diam., red or dark red in the centre, and
with reddish margin. Caespituli amphigenous.
Mycelium internal, inconspicuous. Stromata
oval or ellipsoidal, 840 µm diam. (
x
= 25 µm,
n = 11), dark brown, stromatal cells angular in
outline, 24 µm wide (
x
= 3 µm, n = 14), wall
0.30.5 µm (
x
= 0.38 µm, n = 14), smooth.
Conidiophores fasciculate, arising from
stromata (15 per fascicle), emerging through
stomata, unbranched, geniculate, mostly short,
cylindrical, 824 × 36 µm (
x
= 14.8 × 4 µm, n
= 13), 02-septate, distance between septa 410
µm (
x
= 7.4 µm, n = 9), uniformly pale to
medium olivaceous-brown, wall 0.30.8 µm
wide (
x
= 0.37 µm, n = 8), smooth.
Conidiogenous cells integrated, terminal,
cylindrical, 410 × 24 µm (
x
= 7.5 × 3 µm, n
= 4); conidiogenous loci small, at the apex,
conspicuous, ovoid to oval, 12 µm (
x
= 1.5
µm, n = 5), slightly thickened, but distinctly
darkened, wall 0.5 µm wide (
x
= 0.5 µm, n =
5). Conidia solitary, obclavate or cylindrical,
straight to curved, 578 × 23 µm (
x
= 30.87 ×
2.35 µm, n = 30), 06-septate, pale olivaceous
brown, wall 0.30.5 µm wide (
x
= 0.35 µm, n
= 12), smooth, tip subobtuse, base obconically
truncate, hila 0.51.5 µm wide (
x
= 1.08 µm, n
= 8), wall 0.30.6 µm (
x
= 0.53 µm, n = 8),
unthickened and not darkened.
Colonies on PDA after 3 weeks at 25 °C
with dark green in the centre, and green-grey to
dark green at the margin, reaching 4 mm diam.
Hosts Eugenia jambolana Lam., E.
jambos L., E. javanica Lam., E. uniflora L.,
Syzygium cumini (L.) Skeels, S. samarangense
Merr. & Perry (Myrtaceae).
Distribution Asia: China, India, Iran,
Laos, Taiwan, Thailand; North America and
West Indies: Bermuda, Panama, USA (FL);
South America: Brazil,
Material examined Vientiane Capital,
Xaythany District, Nakhae Village, dry
dipterocarp forest, on leaves of Syzygium
cuminii, 29 June 2006, P. Phengsintham (P111);
ibid., Nakhae Village, 9 December 2008, P.
Phengsintham (P383). GenBank accession no
(ITS, KC731558).
Notes The collections from Laos differ
to the description of Pseudocercospora
sphaerellae-eugeniae in Hsieh & Goh and
Chupp (1954) by the dark red colour of leaf
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
126
spots, but the species described in Chupp
(1954) is uniform brown or purple border.
Literature Chupp (1954: 406),
Vesudeva (1963: 104), Hsieh & Goh (1990:
245).
Fig. 130 Pseudocercospora sphaerellae-
eugeniae on Syzygium cuminii: 1. Stroma with
Conidiophores. 23. Conidiophores. 49.
Conidia. Bar = 5 µm.
(66) Pseudocercospora stahlii (F. Stevens)
Deighton, Mycol. Pap. 140: 82, 1976. Figs
132133.
Helminthosporium stahlii F. Stevens.
Trans. Illinois Acad. Sci. 10: 208, 1917.
Cercospora stahlii (F. Stevens.)
Subram., J. Indian Bot. Soc. 35: 460, 1956.
Helicomina stahlii (F. Stevens) M.B.
Ellis, More dematiaceous hyphomycetes: 178,
1976.
= Cercospora passiflorae-foetidae
J.M. Yen, Rev. Mycol. 29: 228, 1964.
= Cercospora passiflorae-longipedis
J.M. Yen, Bull. Trimestriel Soc. Mycol.
France 90: 44, 1974.
Fig. 130 Pseudocercospora sphaerellae-
eugeniae from Syzygium cuminii from leaf
spots: 12. Lesions on host leaves (1. upper
surface, 2. lower surface). 3. Stroma. 4.
Conidiophore. 59. Conidia. 1011. Culture.
Bars: 12, 10 = 10 mm, 39 = 10 µm.
Leaf spots merely indistinct or irregular,
310 mm diam., olivaceous-grey in the centre,
margin yellow on upper surface and dark brown
or black patches on the lower surface.
Caespituli amphigenous, scattered, dense, but
more abundant on the lower surface. Mycelium
internal; hyphae 14 µm wide (
x
= 2.2 µm, n =
15), septate, constricted at the septa, distance
between septa 314 µm (
x
= 8.8 µm, n = 15),
hyaline or subhyaline, wall 0.250.3 µm wide
(
x
= 0.26 µm, n = 15), smooth. Stromata
substomatal, oval or ellipsoidal, 519 µm diam.
(
x
= 11.28 µm, n = 8), stromatal cells oval,
angular, 36 µm diam. (
x
= 4.50 µm, n = 30),
wall 0.61 µm wide (
x
= 0.77 µm, n = 30),
smooth. Conidiophores fasciculate, arising from
stromata (411 per fascicle), emerging through
stomata, almost straight or slightly sinuous,
geniculate, branched, 23157 × 36 µm (
x
=
102 × 4.69 µm, n = 30), 17-septate, constricted
at the septa, distance between septa 1029 µm
(
x
= 18.3 µm, n = 30), yellowish olivaceous to
olivaceous brown, wall 0.50.8 µm wide (
x
=
0.75 µm, n = 30), smooth. Conidiogenous cells
integrated, terminal or lateral, 1233 × 45 µm
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
127
(
x
= 22.3 × 4.43 µm, n = 30), brownish;
conidiogenous loci small, short tapered towards
an apical conidiogenous locus, which is later
displaced to remain visible as a short lateral
peg, 11.5 µm wide. Conidia solitary, mostly
clavate or cylindrical, 1446 × 37 µm (
x
= 28
× 5 µm, n = 30), 15-septate, sometimes
slightly constricted at the septa, concolorous
with the conidiophores, wall 0.50.8 µm wide
(
x
= 0.73 µm, n = 30), smooth, apex broadly
rounded, based apiculate with a truncate hilum.
Colonies on PDA after 3 weeks at 25 °C
black grey, reaching 4 mm diam., hyphae 27
µm wide, septate, constricted at the septa,
distances between septa 529 µm, occasionally
with a nodulose swellings, up to 7 µm wide,
brown, wall smooth, short tapered towards a
truncate apex which is later displaced to remain
visible as a short lateral peg, 11.5 µm wide.
Conidia solitary, 1532 × 46 µm, brownish,
wall smooth.
Hosts Passiflora foetida L., P.
quadrangularis L. (Passifloraceae).
Distribution Africa: Gabon, Ivory
Coast; Asia: Brunei, India, Laos, Malaysia,
Myanmar, Sabah, Singapore, Taiwan, Thailand;
North America and West Indies: Puerto Rico,
Trinidad and Tobago; Oceania: American
Samoa, Australia, Fiji, Micronesia, Palau,
Papua New Guinea, Samoa, Solomon Islands,
Tonga, Vanuatu.
Material examined Vientiane Capital,
Xaythany District, Nakhae Village, on leaves of
Passiflora foetida, 23 April 2006, P.
Phengsintham (P20).
Notes There is no difference in the
size of conidia formed in vivo or in vitro (Crous
& Braun 2003).
Literature Deighton (1976: 82), Ellis
(1976: 178), Hsieh & Goh (1990: 260), Crous
& Braun (2003: 386).
(67) Pseudocercospora stizolobii (Syd. & P.
Syd.) Deighton, Mycol. Pap. 140: 153, 1976.
Figs 134135.
Cercospora stizolobii Syd. & P. Syd.,
Ann. Mycol. 11: 270, 1913.
= Cercospora lussoniensis Sacc., Ann.
Mycol. 12: 314, 1914.
= Cercospora mucunae-capitatae
Sawada, Rep. Gov. Agric. Res. Inst. Taiwan 85:
116, 1943 (nom.inval.).
Fig. 132 Pseudocercospora stahlii on
Passiflora foetida: 1. Conidiophore. 2. Stroma
with attached conidiophores. 5. Apex of
conidiophore. 48. Conidia. Bar = 10 µm.
Fig. 133 Pseudocercospora stahlii on
Passiflora foetida: 12 Lesions on host leaves
(1. upper surface and 2. lower surface). 3.
Conidiophores. 4. Stroma with attached
conidiophores. 5. Apex of conidiophores. 6
8. Conidiophores. 914. Conidia. 15. Culture.
Bars 12, 15 = 10 mm, 314 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
128
Leaf spots indistinct or distinct,
orbicular or vein-limited and angular to
irregular, 16 mm diam., at first yellowish or
pale brown, later becoming dark brown or
reddish, and sometimes with grey center with a
darker margin; Caespituli amphigenous;
stromata small, dark brown. Mycelium internal,
inconspicuous. Stromata oval to ellipsoidal, 20
50 µm diam. (
x
= 30 µm, n = 5), brown to dark
brown, stromatal cells oval, ellipsoidal and
angular, 57 µm wide (
x
= 5.8 µm, n = 30),
dark brown, wall 0.50.8 µm wide (
x
= 0.58
µm, n = 30), smooth. Conidiophores
fasciculate, arising from stromata (211 per
fascicle), slightly geniculate, unbranched, 50
118 × 34 µm (
x
= 85.5 × 3.9 µm, n = 30), 3
7-septate, constricted at the septa, distance
between septa 635 µm long (
x
= 16 µm, n =
30), uniformly pale to medium brown, much
paler and more narrow toward the tip, wall 0.5
1 µm (
x
= 0.61 µm, n = 30), smooth.
Conidiogenous cells terminal, 1418 × 34 µm
(
x
= 15.5 × 3.67 µm, n = 7), apex obtuse;
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, cylindrical-
obclavate, straight to slightly curved, 1764 ×
45 µm (
x
= 46.5 × 4.6 µm, n = 30), 17-
septate, pale olivaceous-brown, wall 0.30.5
µm wide (
x
= 0.48 µm, n = 30), smooth; apex
subacute; base obconically truncate, hila 13
µm wide (
x
= 2.08 µm, n = 30).
Hosts Mucuna aterrima (Piper &
Tracy) Holland, M. capitata Wight & Arn., M.
cochinchinensis (Lour.) A. Chev., M.
deeringiana (Bort) Hanelt, M. ferruginea
Matsum., M. nivea (Roxb.) DC. ex Wight &
Arn., M. pruriens (L.) DC., M. prurita Wight,
M. urens (L.) Medik., Mucuna sp., Stizolobium
sp. (Fabaceae).
Distribution Africa: Gabon, Ghana,
Malawi, Nigeria, Sierra Leone, South Africa,
Togo, Zambia, Zimbabwe; Asia: Cambodia,
China, Hong Kong, India, Japan, Java Laos,
Nepal, Philippines, Taiwan, Thailand; North
America and West Indies: Barbados, Cuba,
Guatemala, Haiti, Jamaica, Panama, Puerto
Rico, Saint Vincent and the Grenadines,
Trinidad and Tobago, USA (FL, MS, NC),
Virgin Islands; Oceania: Australia, Fiji, Papua
New Guinea; South America: Brazil,
Columbia, Guyana, Venezuela.
Material examined Luang Namtha
Province, Luang Namtha District, Chaleunsouk
Village, fallow forest, on leaves of Mucuna
pruriens, 19 February 2010, P. Phengsintham
(P565).
Notes The collection from Laos agrees
well with Pseudocercospora stizolobii
described by Chupp (1954).
Literature Saccado (1931: 882),
Chupp (1954: 298), Vasudeva (1963: 198),
Deighton (1976: 153), Ellis (1976: 270), Hsieh
& Goh (1990: 203), Hsieh & Goh (1990: 203),
Guo & Hsieh (1995: 182), Crous & Braun
(2003: 389).
Fig. 134 Pseudocercospora stizolobii on
Mucuna pruriens: 1. Stroma with attached
conidiophores. 23. Conidiophores. 49.
Conidia. Bar = 10 µm.
(68) Pseudocercospora tabernaemontanae
(Syd. & P. Syd.) Deighton, Mycol. Pap. 140:
154, 1976. Figs 136137.
Cercospora tabernaemontanae Syd. &
P. Syd., Philipp. J. Sci. (Bot.) 8: 507, 1913.
= Cercospora tabernaemontanae
Thirum. & Govindu, Sydowia 7: 45, 1953.
= Cercospora ervataniae J.M. Yen &
Lim, Bull. Trimestestriel Soc. Mycol. France
86: 745, 1971.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
129
Pseudocercospora ervataniae (J.M.
Yen & Lim) J.M. Yen, Gard. Bull., Singapore
33: 175, 1980.
Fig. 135 Pseudocercospora stizolobii on
Mucuna pruriens: 1. Lesions on host leaves (1.
upper surface. 2. Lower surface). 3. Caespituli.
45. Stromata with attached conidiophores. 7
8. Conidiophores. 912. Conidia. Bars 12 = 10
mm, 412 = 10 µm.
Leaf spots circular to irregular, 315
mm diam., brown or dark brown in the centre,
and with yellow or yellow-grey margin.
Caespituli amphigenous. Mycelium internal and
external not seen. Stromata globose to
elongated, 1570 µm diam. (
x
= 42 µm, n =
12), dark brown, stromatal cells angular in
outline, 37 µm wide (
x
= 5 µm, n = 22), wall
0.81 µm (
x
= 0.85 µm, n = 22), smooth.
Conidiophores solitary or fasciculate, dense to
very dense, arising from stromata (225 per
fascicle or more), emerging through stomata,
unbranched, rarely geniculate, mostly short,
cylindrical, 717 × 25 µm (
x
= 13 × 4 µm, n =
5), 01-septate, distance between septa 411
µm (
x
= 7.3 µm, n = 3), pale to medium
olivaceous-brown, wall 0.30.8 µm wide (
x
=
0.37 µm, n = 8), smooth. Conidiogenous cells
terminal, cylindrical, 713 × 35 µm (
x
= 9.3 ×
3.6 µm, n = 4), wall 0.50.8 µm wide (
x
= 0.6
µm, n = 5), conically rounded or subtruncate at
the apex; conidiogenous loci inconspicuous.
Conidia solitary, cylindrical-obclavate to
obclavate, straight to curved, 1577 × 24 µm
(
x
= 36.25 × 3.25 µm, n = 24), 05-septate, pale
olivaceous brown, wall 0.30.5 µm wide (
x
=
0.33 µm, n = 24), smooth, tip conic to
subobtuse, base obconically truncate, hila 1.52
µm wide (
x
= 1.9 µm, n = 10), wall 0.51 µm
(
x
= 0.67 µm, n = 10), slightly darkened.
Colonies on PDA after 3 weeks at room
temperature 25 °C white-grey to grey,
spreading surface, 12 mm in diam.
Hosts Tabernaemontana coronaria
(Jacq.) Willd., T. heyneana Wall., T.
pandacaque Lam. (Apocynaceae).
Distribution Asia: India, Laos,
Malaysia, Myanmar, Pakistan, Philippines,
Sabah, Singapore, Taiwan.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Tabernaemontana coronaria, 25 July 2006, P.
Phengsintham (P107); Don Noune Village, on
leaves of T. coronaria, 12 June 2008, P.
Phengsintham (P319). GenBank accession no
(ITS, KC677911).
Notes The collections from Laos have
shorter conidiophores than those described in
Hsieh & Goh (1990) [conidiophores 1045 × 2
4 µm and conidia 3090 × 34.5 µm] and
Chupp (1954) [conidiophores 1035 × 24 µm
and conidia 1565 × 23.5 µm].
Literature Saccado (1931: 896),
Chupp (1954: 50), Vesudeva (1963: 192), Hsieh
& Goh (1990: 26), Guo & Hsieh (1995: 19),
Guo et al. (1998: 31), Crous & Braun (2003:
395).
(69) Pseudocercospora tectonae sp. nov.
Figs 138139.
MycoBank, MB 801729
Distinct from Pseudocercospora
tectonicola by its much shorter, narrower, 01-
septate conidiophores, 520 × 34 µm and
much narrower, 25-septate conidia 3563 × 3
4 µm. Furthermore, distinct leaf spots are
developed and the stromata are larger, 2540
µm diam.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
130
Fig. 136 Pseudocercospora tabernaemontanae
on Tabernaemontana coronaria: 1. Stroma with
Conidiophores. 2. Stromatal cells with
Conidiophore. 3. Conidiophore. 46. Conidia.
Bars = 5 µm.
Leaf spots subcircular to irregular, 125
mm diam. (
x
= 11.3 µm, n = 6), at first yellowish,
later becoming brown to dark brown, dark brown
and yellowish at the margin. Caespituli
hypophyllous, inconspicuous. Mycelium internal,
inconspicuous. Stromata well-developed, oval to
ellipsoidal, 2540 µm diam. (
x
= 31.7 µm, n = 4),
brown to dark brown, stromatal cells oval,
ellipsoidal and angular, 35 µm wide (
x
= 4 µm,
n = 9), dark brown, wall 0.50.8 µm wide (
x
=
0.6 µm, n = 9), smooth. Conidiophores fasciculate,
arising from stromata (37 per fascicle), emerging
through stomata, unbranched, 520 × 34 µm (
x
= 11.9 × 3.56 µm, n = 9), 01-septate, constricted
at the septa, distance between septa 511 µm long
(
x
= 8.23 µm, n = 13), uniformly pale to medium
brown, much paler and more narrow toward the
tip, wall 0.30.5 µm (
x
= 0.43 µm, n = 13),
smooth. Conidiogenous cells terminal, 510 ×
2.54 µm (
x
= 7.89 × 3.28 µm, n = 9), apex
obtuse, conidiogenous loci inconspicuous,
unthickened, not darkened.
Conidia solitary, obclavate, obclavate-cylindrical,
straight to slightly curved, 3563 × 34 µm (
x
=
51.75 × 3.25 µm, n = 4), 25-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
= 0.4
µm, n = 4), smooth, tip rounded, base obconically
truncate, hila 1.52 µm wide (
x
= 1.8 µm, n = 4).
Fig. 137 Pseudocercospora tabernaemontanae
on Tabernaemontana coronaria from leaf spots:
12. Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Stroma with attached
Conidiophores. 4. Stromatal cells with attached
conidiophore. 510. Conidia. Bars 12 = 10 mm,
310 = 10 µm.
Hosts Tectona grandis L. f.
(Verbenaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Nong Viengkham Village,
on leaves of Tectona grandis, 10 August 2006,
P. Phengsintham (P138, MFLU12-2204,
Holotype).
Notes Pseudocercospora tectonicola
J.M. Yen, A.K. Kar & B.K. Das (Yen et al.
1982), the only other Pseudocercospora species
on Tectona, is distinct from P. tectonae and has
smaller stromata (lacking or up to 20 µm
diam.), very long and broad conidiophores 36
120 × 5.58 µm, much broader conidia, 30100
× 6.58 µm, with up to 9 septa. In addition, leaf
spots are lacking in P. tectonicola.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
131
Fig. 138 Pseudocercospora tectonae on
Tectona grandis: 1. Stroma with attached
conidiophores. 25. Conidia. Bars = 10 µm.
Fig. 139 Pseudocercospora tectonae on
Tectona grandis from leaf spots: 12. Lesions
on host leaves (1. upper surface and 2. lower
surface). 34. Stromata with attached
conidiophores. 510. Conidia. Bars 12 = 10
mm, 310 = 10 µm.
(70) Pseudocercospora tetramelis A.N. Shukla
& Sarmah, Curr. Sci. 53(4): 204, 1984. Figs
140141.
Leaf spots circular to irregular, 15 mm
diam., brown to dark brown in the centre, with a
brown to brown-greenish margin. Caespituli
hypophyllous, scattered. Mycelium internal;
hyphae branched, 24 µm wide (
x
= 2.85 µm,
n = 28), septate, constricted at the septa,
distance between septa 217 µm (
x
= 10.21
µm, n = 28), brown to subhyaline, wall smooth.
Stromata more developed, sub-stomatal,
subglobular, 1045 µm diam. (
x
= 26.9 µm, n
= 10), brown to dark brown, stromatal cells
oval, ellipsoidal to angular in outline, 310 µm
wide (
x
= 6.3 µm, n = 30), dark brown, wall
0.51 µm wide (
x
= 0.7 µm, n = 30), smooth.
Conidiophores solitary or fasciculate, arising
from stromata (214 per fascicle), erect, straight
or curved, unbranched, 75202 × 45 µm (
x
=
121 × 4.73 µm, n = 11), 38-septate, distance
between septa 1032 µm (
x
= 21.2 µm, n =
30), pale to moderately olivaceous-brown, wall
0.50.8 µm wide (
x
= 0.58 µm, n = 30),
smooth. Conidiogenous cells integrated,
subtruncate, cicatrized, 1230 × 35 µm (
x
=
19.3 × 4.36 µm, n = 11), pale olivaceous or
brown; conidiogenous loci inconspicuous, 13
µm wide (
x
= 1.7 µm, n = 5), wall 0.50.8 µm
wide (
x
= 0.56 µm, n = 5), smooth,
unthickened and not darkened. Conidia solitary,
obclavate, straight to moderately curved, 4687
× 68 µm (
x
= 60.7 × 6.9 µm, n = 10), 38-
septate, slightly constricted at the septa, pale
olivaceous, wall 0.30.5 µm wide (
x
= 0.48
µm, n = 10), smooth, bluntly rounded at the
apex, with subtruncate base, basal hila 1.52
µm wide (
x
= 1.8 µm, n = 8), wall 0.30.5 µm
(
x
= 0.47 µm, n = 8) thick.
Colonies on PDA after 3 weeks at 25°C
grey, 12 mm diam., surface ridged and
smooth, mycelium dark brown, hyphae 38 µm
wide (
x
= 4.6 µm, n = 30), septate, constricted
at the septa, distance between septa 730 µm
long (
x
= 18 µm, n = 30), hyaline, wall 0.31
µm (
x
= 0.52 µm, n = 30) thick, smooth.
Conidiophores not formed in culture. Conidia
solitary, arising from apices of mycelium,
obclavate, straight to moderately curved, 2062
× 59 µm (
x
= 36.9 × 6.8 µm, n = 30), 14-
septate, slightly constricted at the septa, pale
olivaceous, wall 0.30.5 µm wide (
x
= 0.46
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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µm, n = 30), smooth, bluntly rounded at the
apex, with subtruncate base, basal hila 1.53
µm wide (
x
= 2.05 µm, n = 30), wall 0.30.5
µm (
x
= 0.48 µm, n = 30) thick.
Host Tetrameles nudiflora R. Br. &
Benn. (Datiscaceae).
Distribution Asia: India, Laos.
Material examined Vientiane
Province, Home District, Pha En Village, mixed
deciduous forest, on leaves of Tetrameles
nudiflora, 18 November 2009, P. Phengsintham
(P462). GenBank accession no (ITS,
KC677938).
Notes This is true intermediate
between Passalora and Pseudocercospora.
Such intermediate taxa are common in species
with synnematous conidiomata. The
conidiogenous cells are barely geniculate, rather
subcylindrical. Phaeoisariopsis griseola, the
type species of Phaeoisariopsis, has similar
conidiogenous cells. This species is now placed
in Pseudocercospora (confirmed by molecular
studies). Pseudocercospora tetramelis has a
similar range in conidiogenous loci from being
unthickened, not darkened to slightly darkened-
refractive or only the ultimate rim somewhat
darkened. The hila of the conidia are all
unthickened and not darkened. Hence it is
preferable to assign this species to
Pseudocercospora (as in the case of
Phaeoisariopsis griseola).
Literature Shukla & Sarmah (1984:
204), Crous & Braun (2003: 27).
(71) Pseudocercospora tiliacorae (A.K. Kar &
M. Mandal) Deighton, Trans. Brit. Mycol. Soc.
88: 388, 1987. Figs 142143.
Cercospora tiliacorae A.K. Kar & M.
Mandal, Trans. Brit. Mycol. Soc. 53: 353, 1969.
Leaf spots subcircular, 26 mm diam.,
with pale grey centre, and dark grey to dark
brown margin. Caespituli amphigenous,
inconspicuous. Mycelium internal; hyphae
branched, 17 µm wide (
x
= 3.37 µm, n = 30),
septate, constricted at the septa, distance
between septa 520 µm (
x
= 12.13 µm, n =
30), brownish, subhyaline, wall 0.250.9 µm
wide (
x
= 0.50 µm, n = 30), smooth, forming
plate-like plectenchymatous stromatic hyphal
aggregations. Stromata globular, subglobose to
ellipsoidal, subglobose, 2830 µm diam, brown
Fig. 140 Pseudocercospora tetramelis on
Tetrameles nudiflora: 1. Stroma with attached
conidiophores. 2. Stroma. 3. Apices of
Conidiophores. 48. Conidia. Bars = 10 µm.
Fig. 141 Pseudocercospora tetramelis on
Tetrameles nudiflora from leaf spots: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Internal mycelium. 4.
Stroma with attached conidiophores. 5.
Stroma. 6. Apices of conidiophores. 7.
Conidiophore with attached conidium. 810.
Conidia. Bars 12 = 10 mm, 310 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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to dark brown, stromatal cells oval, ellipsoidal
to angular in outline, 35 µm wide (
x
= 4.67
µm, n = 11), brownish or dark brown, wall 0.8
1 µm wide (
x
= 0.82 µm, n = 11), smooth.
Conidiophores fasciculate, arising from
stromata (up to 50 per fascicle), slightly
geniculate, unbranched, 920 × 23 µm (
x
=
13.7 × 2.5 µm, n = 6), septate indistinctly, 01-
septate, constricted at the septa, distance
between septa 515 µm, uniformly pale to
medium olivaceous brown, uniform in colour,
wall 0.30.5 µm wide (
x
= 0.43 µm, n = 6),
smooth. Conidiogenous cells terminal, 15 × 2
µm, apex subobtuse to obtuse; conidiogenous
loci inconspicuous, unthickened, not darkened.
Conidia solitary, cylindrical-obclavate,
obclavate, cylindrical, straight to slightly
curved, 1579 × 23 µm (
x
= 35.9 × 2.3 µm, n
= 30), 15-septate, pale olivaceous-brown, wall
0.30.5 µm wide (
x
= 0.45 µm, n = 30),
smooth, tip subobtuse or obtuse, base
subobconically truncate, hilum1.5 µm wide,
wall of the hila 0.5 µm wide.
Colonies on PDA after 3 weeks at 25°C
grey, reaching 915 mm diam., hyphae 17 µm
wide (
x
= 3.37 µm, n = 30), septate, constricted
at the septa, distance between septa 520 µm
(
x
= 12.13 µm, n = 30), branched, breaking
easily into parts, brownish or subhyaline, wall
0.250.9 µm wide (
x
= 0.50 µm, n = 30),
smooth. Conidia obclavate, 12 × 3 µm,
subhyaline, wall 0.3 µm wide, smooth.
Hosts Tiliacora acuminata Miers, T.
triandra Diels (Menispermaceae).
Distribution Asia: India, Laos.
Material examined Vientiane Capital,
Xaythany District, Nong Viengkham Village,
on leaves of Tiliacora triandra, 22 April 2006,
P. Phengsintham (P16).
Notes The collection from Laos differs
from Indian type material in having shorter
conidiophores and in being indistinctly, 01-
septate (conidiophores in the Indian collection
are longer and distinctly 08-septate).
Literature Chupp (1954: 297), Kar &
Madal (1969: 253), Crous & Braun (2003: 404).
(72) Pseudocercospora trichophila (F. Stevens)
Deighton var. punctata U. Braun & Urtiaga,
Mycosphere 3(3): 322, 2012. Figs 144, 145.
Fig. 142 Pseudocercospora tiliacorae on
Tiliacora triandra: 14. Conidiophores. 59.
Conidia. Bar = 10 µm.
Fig. 143 Pseudocercospora tiliacorae on
Tiliacora triandra: 12 Lesions on host leaves
(1. upper surface, 2. lower surface). 3. Stroma
with attached conidiophores. 49. Conidia. Bars
12 = 10 mm, 39 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Leaf spots suborbicular or angular, 113
mm diam., pale brown or grey to brown in the
centre, and with yellowish margin. Caespituli
amphigenous, but chiefly hypophyllous.
Mycelium external; hyphae branched, 24 µm
wide (
x
= 2.25 µm, n = 30), septate, constricted
at the septa, distance between septa 431 µm
(
x
= 17.2 µm, n = 30), brownish, subhyaline,
wall 0.30.8 µm wide (
x
= 0.4 µm, n = 17),
smooth. Stromata developed, oval to ellipsoidal,
940 µm diam., stromatal cells oval, ellipsoidal
to angular in outline, 24 µm wide, dark brown,
wall 0.6 µm wide, smooth. Conidiophores
fasciculate, arising from stromata (67 per
fascicle), and secondary conidiophores borne on
terminally and laterally on the external mycelial
hyphae, very variable in length in one on the
same hyphae, erect, straight or curved,
branched, obtuse, 650 × 34 µm (
x
= 19.11 ×
3.46 µm, n = 30), 03-septate, distance between
septa 821 µm (
x
= 11.17 µm, n = 6), pale to
medium brown; wall 0.50 µm wide, smooth.
Conidiogenous cells integrated, 69 × 34 µm,
pale olivaceous or brown, apex obtuse;
conidiogenous loci inconspicuous. Conidia
solitary, subcylindrical, slightly obclavate-
cylindrical, or sometimes slightly clavate-
cylindrical, substraight or slightly to strongly
curved, 3060 × 35 µm (
x
= 42.45 × 3.46 µm,
n = 30), 16-septate, slightly note constricted at
the septa, pale olivaceous, wall 0.50.8 µm
wide (
x
= 0.67 µm, n = 30), smooth, broadly
rounded at the apex, the basal cell rounded at
the base or more abruptly tapering towards the
base, hilum 12 µm wide, wall 0.61 µm wide,
unthickened, not darkened.
Colonies on PDA after 3 weeks at 25°C
black-grey mycelium, reaching 23 mm diam.,
hyphae 17 µm wide (
x
= 3.37 µm, n = 30),
septate, constricted at the septa, distance
between septa 421 µm (
x
= 12.33 µm, n =
30), brownish or subhyaline, wall 0.250.9 µm
(
x
= 0.43 µm, n = 30), smooth. Conidiogenous
cells terminal, consists of swollen cells 56 µm
wide; conidiogenous loci inconspicuous.
Conidia solitary, subcylindrical, slightly
obclavate-cylindrical, or sometimes slightly
clavate-cylindrical, substraight or slightly or
strongly curved, 1184(94) × 37 µm (
x
=
58.9 × 4.23 µm, n = 30), 16-septate, slightly or
occasionally distinctly constricted at the septa,
pale olivaceous, wall approximately 0.85 µm
wide, smooth, broadly rounded at the apex, the
basal cell rounded toward the base or more
abruptly tapering towards the base.
Hosts Solanum aculeatissimum Acq.,
S. biflorum Lour., S. erianthum D. Don, S. ferox
L., S. hirtum Vahl, S. jamaicensis (L.) Vahl., S.
melongena L., S. nigrum L., S. torvum Sw., S.
umbellatum Mill., S. undatum Poir and S.
verbascifolium L. (Solanaceae).
Distribution Asia: Brunei, China,
India, Laos, Malaysia, Sabah, Taiwan; North
America and West Indies: Costa Rica, Cuba,
Dominican Republic, Jamaica, Panama, Puerto
Rico, Trinidad and Tobago, USA (FL), Virgin
Islands; Oceania: Papua New Guinea, Solomon
Islands; South America: Brazil, Columbia,
Guyana, Venezuela.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Solanum undatum, 15 April 2006, P.
Phengsintham (P07).
Notes Deighton (1976) did not
describe any stromata, but in the collection of
Pseudocercospora trichophila from Laos small
stromatic hyphal aggregations are developed.
Such deviating collections with stromata have
recently been described as P. trichophila var.
punctata (Braun & Urtiaga 2012).
Literature Braun & Urtiaga (2012:
301329).
(73) Pseudocercospora wendlandiphila sp.
nov. Figs 146147.
MycoBank, MB 801730
Superficially similar to Cercospora
wendlandiae, but distinct by its pluriseptate
conidiophores and longer, narrower and
pigmented conidia.
Leaf spots subcircular to irregular, 115
mm diam., at first reddish, later becoming
brown, brown to dark brown at the margin.
Caespituli hypophyllous, conspicuous.
Mycelium internal; hyphae branched, 23 µm
wide (
x
= 2.5 µm, n = 7), septate, constricted at
the septa, distance between septa 510 µm (
x
=
7 µm, n = 7), brownish, subhyaline, wall 0.3
0.5 µm wide (
x
= 0.45 µm, n = 7), smooth,
forming plate-like plectenchymatous stromatic
hyphal aggregations. Stromata oval to
ellipsoidal, 1540 µm diam. (
x
= 29.5 µm, n =
11), brown to dark brown, stromatal cells oval,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 144 Pseudocercospora trichophila var.
punctata on Solanum undatum: 1. Stroma with
attached conidiophores. 2 Stroma with attached
conidiophores and external hyphae. 34.
External hyphae. 510. Conidia. Bars = 10 µm.
Fig. 145 Pseudocercospora trichophila var.
punctata on Solanum undatum from leaf spots:
12. Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Stroma with attached
conidiophores. 45. External hyphae. 68.
Conidia. 9. Culture. Bars 12, 9 = 10 mm, 48
= 10 µm.
ellipsoidal and angular, 510 µm wide (
x
= 6.9
µm, n = 9), dark brown, wall 0.50.8 µm wide
(
x
= 0.73 µm, n = 9), smooth. Conidiophores
fasciculate, arising from stromata (532 per
fascicle), geniculate, unbranched, 2565 × 45
µm (
x
= 47.6 × 4.64 µm, n = 11), 15-septate,
slightly constricted at the septa, distance
between septa 528 µm long (
x
= 12.5 µm, n =
30), uniformly pale to medium brown, much
paler and more narrow toward the tip, wall 0.5
0.8 µm (
x
= 0.56 µm, n = 30), smooth.
Conidiogenous cells terminal, 817 × 35 µm
(
x
= 12.2 × 3.89 µm, n = 9), obtuse,
conidiogenous loci inconspicuous, unthickened,
not darkened. Conidia solitary, obclavate,
straight to slightly curved, 2372 × 25 µm (
x
= 49.3 × 3.0 µm, n = 11), 35-septate, pale
olivaceous-brown, wall 0.30.5 µm wide (
x
=
0.46 µm, n = 11), smooth, tip subacute, base
truncate, hila 1.53 µm wide (
x
= 2.38 µm, n =
11). Hosts Wendlandia thorelii Pit.
(Rubiaceae).
Distribution Asia: Laos.
Material examined Xiangkhouang
Province, Paek District, Phonsavan Village,
coniferous forest, on leaves of Wendlandia
thorelii, 3 January 2010, P. Phengsintham
(P512, MFLU 12-2205, Holotype).
Notes Pseudocercospora
wendlandiphila is morphologically comparable
with Cercospora wendlandiae (Vasudeva
1963). The generic affinity of this species is
still unclear (Crous & Braun 2003), but due to
sparsely septate conidiophores and subhyaline,
shorter and wider conidia, 2846 × 4.56 µm
(Vasudeva 1963) the latter species is in any
case not conspecific. The Indian Zasmidium
wendlandiicola (U. Braun & Crous) Kamal &
U. Braun ( Stenella wendlandiicola U. Braun
& Crous, Cercospora wendlandiae M.
Mandal, nom. illeg., non C. wendlandiae T.S.
Ramakr. & Sundaram) is a quite distinct
cercosporoid fungus with verruculose
superficial hyphae, solitary conidiophores
(fascicles lacking), thickened and darkened
conidiogenous loci and very long pluriseptate
conidia formed singly (Mandal 1978).
Zasmidium rubiacearum (S. Chaudhary, N.
Sharma & Kamal) Kamal (Chaudhary et al.
2002, Kamal 2010) on Wendlandia tinctoria in
India resembles Z. tinctoriicola, but the conidia
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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Fig. 146 Pseudocercospora wendlandiphila
on Wendlandia thorelii: 1. Stroma with
attached conidiophores. 25. Conidia. Bar =
10 µm.
Fig. 147 Pseudocercospora wendlandiphila
on Wendlandia thorelii from leaf spots: 12.
Lesions on host leaves (1. upper surface. 2.
lower surface). 3. Caespituli. 45. Stromata
with attached conidiophores. 610. Conidia.
Bars 12 = 10 mm, 410 = 10 µm.
are formed in simple or branched chains.
Literature Vasudeva (1963),
Mandal (1978), Chaudhary et al. (2002),
Crous & Braun (2003), Kamal (2010).
(74) Pseudocercospora wrightiae (Thirum. &
Chupp) Deighton, Mycol. Pap. 140: 156, 1976.
Figs 148149.
Cercospora wrightiae Thirum. &
Chupp, Mycologia 40: 362, 1948.
Leaf spots circular, 210 mm in diam.,
with brown to dark brown and yellowish
margin. Caespituli amphigenous, but chiefly
hypophyllous. Mycelium internal; hyphae
branched, 24 µm wide (
x
= 3.5 µm, n = 6),
septate, constricted at the septa, distance
between septa 517 µm (
x
= 9.13 µm, n = 8),
subhyaline or hyaline, wall 0.30.5 µm wide
(
x
= 0.38 µm, n = 8), smooth. Stromata well-
developed, substomatal, subglobular, 2042 µm
wide, brown to dark brown, stromatal cells
oval, ellipsoidal to angular in outline, 48 µm
wide (
x
= 6.59 µm, n = 17), dark brown, wall
0.81 µm wide (
x
= 0.87 µm, n = 17), smooth.
Conidiophores fasciculate, arising from
stromata (6-9 per fascicle), erect, straight or
curved, unbranched, (10)2030 × 35 µm (
x
=
24.8 × 4.08 µm, n = 12), 01-septate, distance
between septa 222 µm (
x
= 11.6 µm, n = 8),
pale to moderately olivaceous-brown, paler and
narrower towards the apex, wall 0.50.8 µm
wide (
x
= 0.55 µm, n = 12), smooth.
Conidiogenous cells integrated, 1326 × 35
µm, pale olivaceous-brown; conidiogenous loci
inconspicuous. Conidia solitary, obclavate,
straight to moderately curved, (28)37107 ×
(3)46 µm (
x
= 64.5 × 4.57 µm, n = 30), 17-
septate, slightly constricted at the septa, pale
olivaceous, wall 0.50.8 µm wide (
x
= 0.60 µm,
n = 30), smooth, obtuse at the apex, with long
obconically truncate base.
Colonies on PDA after 3 weeks at 25°C
grey, spreading surface ridged and smooth, 6
10 mm diam, hyphae 16 µm wide (
x
= 3 µm, n
= 30), septate, constricted at the septa, distance
between septa 520 µm (
x
= 15.67 µm, n = 30),
brown, wall 0.250.5 µm wide (
x
= 0.41 µm, n
= 30), smooth. Conidia not formed in culture.
Hosts Plumeria obovata Müll. Arg.,
Wrightia pubescens R. Br., W. tintoria R. Br.
(Apocynaceae).
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Distribution Asia: China, India, Laos;
South America: Brazil.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Wrightia pubescens, 11 May 2006, P.
Phengsintham (P40), ibid., 12 August 2007, P.
Phengsintham (P300).
Notes The collections from Laos are
similar to the original description of this
species, based on materials from India, but
there are slight differences in size of the
conidiophores and conidia. The collection from
India has conidiophores densely fasciculate,
1545 × 36.5 µm, subhyaline to pale brown
and conidia obclavate, straight to moderately
curved, 25105 × 46.5 µm, medium
olivaceous.
Literature Chupp (1954: 51), Guo &
Hsieh (1995: 19), Crous & Braun (2003: 431).
Fig. 148 Pseudocercospora wrightiae on
Wrightia pubescens: 1. Stroma with attached
conidiophore. 24. Conidiophores. 59.
Conidia. Bar = 10 µm.
(75) Zasmidium aporosae Phengsintham, K.D.
Hyde & U. Braun, Cryptog. Mycol. 30(2): 246,
2009. Figs 150151.
Leaf spots variable, typically deep
brown to black, more or less irregularly
orbicular, 115 mm in diam. Caespituli
amphigenous, but chiefly hypophyllous.
Fig. 149 Pseudocercospora wrightiae on
Wrightia pubescens from leaf spots: 12.
Lesions on host leaves (1. upper surface, 2.
lower surface). 3. Caespituli. 45. Stromata
with attached conidiophores. 69. Conidia. 10.
Culture. Bars 12, 10 = 10 mm, 49 = 10 µm.
Mycelium internal and external, internal hypha
inconspicuous; external hyphae often
constricted at the septa, pale olivaceous-brown,
almost smooth to verruculose, 17 µm wide (
x
= 2.57 µm, n = 30), distance between septa 5
29 µm (
x
= 11.67 µm, n = 30), thick-walled
0.31 µm (
x
= 0.61 µm, n = 30). Stromata
absent. Conidiophores borne on external
mycelial hyphae, unbranched, septate, mid pale
golden brown, smooth, 25-septate, thin-
walled, 0.51 µm (
x
= 0.80 µm, n = 30), (6
)2976(83) × 34 µm (
x
= 43.1 × 3.2 µm, n =
30); conidiogenous cells intergrated, terminal or
rarely intercalary, 715 × 13 µm (
x
= 10.3 ×
2.8 µm, n = 30), conidiogenous loci forming
minute, dark or refractive scars on lateral and
terminal denticles, 12 µm wide (
x
= 1.72 µm,
n = 30), planate, giving rise to branched
conidial chains, occasionally terminally
swollen. Conidia solitary or catenate, pale
olivaceous, small conidia ellipsoid-ovoid to
subcylindrical, but most conidia longer and
slightly obclavate to obclavate-subcylindrical,
straight or slightly curved or sinuous, smooth or
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
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finely verruculose, thin-walled, rounded or
subtruncate at the ends with thickened, planate
hila, short obconically truncate at the base,
variable in length and shape, occasionally with
lateral branchlets (germ tubes), 03-septate, (5
)638(39) × 23 µm (
x
= 17.47 × 2.3 µm, n =
30).
Colonies on PDA after 3 weeks at 250C
with spreading mycelium, surface ridged, black
and wavy in the centre and grey margin,
reaching 1027 mm diam.; hyphae often
constricted at the septa, distance between septa
420 µm (
x
= 10.97 µm, n = 30), thin-walled
0.51 µm (
x
= 0.68 µm, n = 30), hyaline,
smooth or verruculose, forming lateral and
terminal minute, dark or refractive denticle-like
scars, 1      
conidial chains, width of mycelial hyphae
gradually decreasing from primary to secondary
and any later colonies. Conidia solitary or
catenate, greenish, verruculose, more variable
in length and shape than those from leaves, 17
66 × 34 µm (
x
= 41.94 × 3.3 µm, n = 18).
Hosts: Aporosa villosa (Lindl.) H. Baill.
(Euphorbiaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Nonh Saengchanh Village,
Dry dipterocarp forest, on leaves of Aporosa
villosa, 19 April 2006, P. Phengsintham (P8,
MFLU12-2206, holotype); ibid., 22 January
2007, P. Phengsintham (P201); ibid., 25 May
2007, P. Phengsintham (P171); ibid.,
Bolikhamxay Province, 5 May 2007, P.
Phengsintham (P274). GenBank accession no
(ITS, KC677912).
Notes The young conidia of Z.
aporosae can be minutely verruculose, more
evident than in adult conidia. Several species of
the genus Zasmidium are known from hosts
belonging to the Euphorbiaceae, but all of them
are distinct from Z. aporosae. Zasmidium
bischofiae-javanicae (R.K. Chauhary, Tripathi,
P.N. Singh & S. Chaudhary) Kamal (Chaudhary
et al. 2001, Kamal 2010), described form India
on Bischofia javanica, differs in having usually
solitary conidia, up to 5 µm wide, with 26
septa and a surface with loosely scattered
coarse warts. S. brideliicola (K. Srivast., A.K.
Srivast. & Kamal) Kamal on Bridelia stipularis
in India (Srivastava et al. 1994, Kamal 2010)
has longer conidiophores, up to 310 × 57 µm,
and broader conidia 47 µm, formed singly.
Zasmidium manihotis (U. Braun & F.O. Freire)
U. Braun, known on Manihot sp. in Brazil, is
characterized by having solitary as well as
fasciculate conidiophores and longer conidia,
25160 × 34 µm, 216-septate, usually formed
singly. Z. gorakhpurensis (Kamal & P. Kumar)
Kamal (de Hoog et al. 1983, Kamal 2010) on
Glochidion multiloculare in India is
characterized by having colourless hyphae and
smooth, very small, 13-septate conidia.
Literature Crous & Braun (2003: key).
Fig. 150 Zasmidium aporosae on Aporosa
villosa: 13. External hyphae with attached
conidiophores. 411. Conidia. Bar = 10 µm.
(76) Zasmidium dalbergiae sp. nov.
Figs 152153.
Mycobank, MB 801731
Morphologically comparable with
Zasmidium pterocarpi, but hyphae wider, 34
µm, conidiophores much longer and wider, 45
290 × 34 µm, and conidia longer, wider and
pale olivaceous. Differs from all other species of
Zasmidium on hosts of the Fabaceae s. str.
(Faboideae) in having very narrow conidia, 48
105 × 23 µm.
Leaf spots variable, more or less
irregularly orbicular, up to 10 mm diam.,
typically deep brown. Caespituli amphigenous,
inconspicuous. Mycelium external; hyphae
branched, 34 µm wide (
x
=sep-
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
139
Fig. 151 Zasmidium aporosae on Aporosa
villosa from leaf spots/Lesions: 12. Lesions on
host leaves (1. upper surface, 2. lower surface).
3. Caespituli. 45. Conidiophores. 67. External
hyphae. 810. Conidia. 11. Culture. Bars 12,
11 = 10 mm, 410 = 10 µm.
tate, constricted at the septa, distance between
septa 1535 µm (
x
     , pale
olivaceous-brown, thin-walled 0.30.5 µm wide
(
x
     , verruculose. Stromata
lacking. Conidiophores borne on external
mycelial hyphae, unbranched, cylindrical, 45
290 × 34 µm (
x
= 148 × 3.29 µm, n = 7), 3
11-septate, distance between septa 838 µm (
x
= 22.9 µm, n = 30), mid pale golden brown,
wall 0.50.8 µm(
x
= 0.54 µm, n = 30), smooth.
Conidiogenous cells integrated, terminal or
intercalary, 927 × 24 µm (
x
= 20.6 × 2.8 µm,
n = 11), cylindrical with swollen and curved at
the apex; conidiogenous loci forming minute,
dark or refractive scars on lateral and terminal
denticles, 1 × 1.5 µm diam. (
x
= 1.16 µm, n =
11), giving rise to branched conidial chains,
wall 0.30.5 µm wide (
x
= 0.43 µm, n = 11),
thickened, darkened. Conidia solitary or
catenate, sometimes ellipsoidal-ovoid or
subcylindrical, but mostly slightly obclavate,
straight or slightly curved or sinuous, 48105 ×
23 µm (
x
= 80.4× 2.6 µm, n = 13), 13-
septate, pale olivaceous, wall 0.30.5 µm wide
(
x
= 0.35 µm, n = 13), smooth or finely
verruculose; apex rounded or subtruncate at the
ends with thickened hila, 11.5 µm wide (
x
=
1.25 µm, n = 5), wall 0.30.5 µm wide (
x
= 0.4
µm, n = 5), thickened and darkened, base
shortly tapered at the base to the hilum, 11.5
µm wide (
x
= 1.25 µm, n = 6), wall 0.30.5 µm
wide (
x
= 0.4 µm, n = 6), thickened and
darkened.
Hosts Dalbergia cultrata Graham
(Fabaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Dongmakkai Village, mixed
deciduous forest, on leaves of Dalbergia
cultrata, 2 April 2010, P. Phengsintham (P550,
MFLU12-2207, holotype). GenBank accession
no (ITS, KC677913).
Notes This is the first species of
Zasmidium on Dalbergia. Zasmidium
pterocarpi (Kranz) U. Braun comb. nov. (Bas.:
Stenella pterocarpi Kranz, Sydowia 20(1/6):
     339665;
holotype: on Pterocarpus santalinoides DC.,
Guinea, Kinida, 7 Dec. 1963, J. Kranz, IMI
105007) is a comparable species with narrow
conidia, but differs from Z. dalbergiae in
having very narrow hyphae, 12(3) µm wide,
much shorter and narrower conidiophores, 520
× 1.53 µm, and shorter, narrower, hyaline
conidia, 860 × 1.52 µm (Braun 2001).
Several additional species of Zasmidium have
been described from other hosts belonging to
the Fabaceae, but all of them [Z. browneicola
(R.K. Chaudhary, Tripathi, P.N. Singh &
Kamal) Kamal, Z. buteae (S. Misra, N. Srivast.
& A.K. Srivast.) Kamal, Z. canavaliae
(Deighton) Kamal, Z. pterocarpigena (U. Braun
& Hosag.) U. Braun, Z. crotalariicola (R.
Chaudhary, C. Gupta & Kamal) Kamal, Z.
fabacearum (K. Srivast., A.K. Srivast. &
Kamal) Kamal, Z. millettiae (R.K. Chaudhary,
Tripathi, P.N. Singh & Kamal) Kamal, Z.
tephrosiae (G.F. Atk.) Kamal & U. Braun] have
wider conidia, up to 6 µm, and differ in various
additional characters, e.g. length and septation
of conidiophores and conidia (Chupp 1954,
Chaudhary et al. 2001, Braun et al. 2003,
Kamal 2010).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
140
Literature Chupp(1954), Chaudhary et
al. (2001), Braun et al. (2001, 2003), Kamal
(2010).
Fig. 152 Zasmidium dalbergiae on
Dalbergia cultrata: 12. External mycelium
with attached conidiophores. 25. Conidia.
Bar = 10 µm.
Fig. 153 Zasmidium dalbergiae on Dalbergia
cultrata from leaf spot: 12. Lesions on host
leaves (1. upper surface and 2. lower surface).
3. External mycelium with attached with
conidiophore. 4. Apex of conidiophores. 5.
Conidium. Bar = 10 µm.
(77) Zasmidium jasminicola Phengsintham,
K.D. Hyde & U. Braun, Cryptog. Mycol. 30(2):
249, 2009. Figs 174175.
Leaf spots variable, typically deep
brown, more or less irregularly orbicular, up to
10 mm. diam. Caespituli amphigenous.
Mycelium: internal hyphae not observed;
external hyphae verruculose, often constricted
at the septa, pale olivaceous-brown, 1 
wide, distance between septa 715 µm, thin-
walled 0.50.8 µm. Stromata well-developed,
brown, 6
external mycelial hyphae, unbranched, septate,
mid pale golden brown, smooth, thinwalled
0.50.8 µm, up to 3-septate, 1046 × 24 µm
(
x
= 21.54 × 2.31 µm, n = 13), conidiogenous
cells intergrated, terminal or rarely intercalary,
715 × 23 µm, conidiogenous loci forming
minute, dark or refractive scars on lateral and
terminal denticles, 23 µm diam., planate,
giving rise to branched conidial chains,
occasionally terminally swollen. Conidia
solitary or catenate, pale olivaceous, ellipsoid-
ovoid or subcylindrical but mostly slightly
obclavate, straight or slightly curved or sinuous,
smooth or finely verruculose, thin-walled,
rounded or subtruncate at the ends, with
thickened hila, 1    
obconically truncate at the base, about 0.51.5
      shape, some
conidia occasionally with a lateral branchlet
(germ tube), 06-septate, (4)542(47) × (2
)35(6) µm (
x
= 13.98 × 2.09 µm, n = 30).
Colonies on PDA after 3 weeks at 25 0C
with spreading mycelium, surface ridged, black
and wavy in the centre and grey margin,
reaching 1027 mm diam. Hyphae often
constricted at the septa, distances between septa
(2)627 µm (
x
= 14.93 µm, n = 30), thin-
  
or verruculose, forming minute, dark or
refractive scars on lateral and terminal
denticles, 1.52 µm diam., giving rise to
branched conidial chains, width of mycelial
hyphae gradually decreasing from primary to
secondary and any later colonies, 15 µm wide
(
x
= 2.8 µm, n = 30). Conidia solitary or
catenate, greenish, verruculose, more variable
in length and shape than those from leaves, 5
29 × 1.52.5 µm (
x
= 10.5 × 2.08 µm, n = 30).
Hosts Jasminum undulatum Ker-
Gawl. (Oleaceae).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
141
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Xay Village, fallow forest,
on leaves of Jasminum undulatum, 19 April
2006 (P10, MFLU12-2208, holotype).
Notes Zasmidium pseudoramularia
(U. Braun) U. Braun  Stenella
pseudoramularia U. Braun, the second species
of Zasmidium on a host belonging to the
Oleaceae, described from Indonesia on
Nyctanthes arbor-tristis (Braun 2001), is
distinguished from Z. jasminicola by forming
solitary or loosely aggregated (subfasciculate)
conidiophores arising from immersed hyphae
and much narrower (635 × 13 µm in vivo),
01(2)-septate conidia The young conidia of
Z. jasminicola can be minutely verruculose,
more evident than in adult conidia.
Fig. 174 Zasmidium jasminicola on Jasminum
undulatum: 14. Conidiophores. 511. Conidia.
Bars = 10 µm.
Fig. 155 Zasmidium jasminicola on Jasminum
undulatum from leaf spot: 12. Lesions on host
leaves (1. upper surface, 2. lower surface). 34.
Stromata. 58. Conidiophores. 914. Conidia.
15. Culture. Bars: 12, 15 = 10 mm, 314 = 10
µm.
(78) Zasmidium meynae-laxiflorae (K.
Srivast., A.K. Srivast. & Kamal) Phengsintham,
K.D. Hyde & U. Braun, Cryptog. Mycol. 30(2):
255, 2009. Figs 156157.
Stenella meynae-laxiflorae K. Srivast.,
A.K. Srivast. & Kamal, in Srivastava et al.,
Mycol. Res. 99: 235, 1995.
Leaf spots circular to irregularly,
angular, 112 mm in diam., brown to dark
brown in the centre and with yellowish margin.
Caespituli amphigenous, small, scattered,
brown. Mycelium internal and external: internal
hyphae inconspicuous; external hyphae
branched, 23 µm wide (
x
= 2.5 µm, n = 12),
septate, constricted at the septa, distance
between septa 5  
x
= 11.92 µm, n =
12), pale olivaceous-brown, wall 0.30.8 µm
wide (
x
= 0.52 µm, n = 12), verruculose.
Stromata well-developed, subglobose, 1041
µm in diam., brown; stromatal cells oval,
ellipsoidal to angular in outline, 3  
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
142
(
x
= 5.67 µm, n = 30), brown to dark brown,
wall 0.51 µm wide (
x
= 0.74 µm, n = 30),
smooth. Conidiophores fasciculate, arising from
stromata (920 per fascicle) and solitary, borne
on external mycelial hyphae, unbranched,
cylindrical, (14)1593(98) × 34 µm (
x
=
51.8 × 3.37 µm, n = 30), 07-septate, distance
between septa 423 µm (
x
= 11 µm, n = 30),
brown to dark brown, wall 0.51 µm (
x
= 0.63
µm, n = 30), smooth, 02-geniculate;
conidiogenous cells polyblastic, integrated,
terminal or intercalary, 923 × 34 
cylindrical, pale at the apex; conidiogenous loci
forming minute, dark or refractive scars on
lateral and terminal denticle-like protuberances
giving rise to branched conidial chains, 11.5
µm wide (
x
= 1.68 µm, n = 13), wall 0.51 µm
wide (
x
= 0.81 µm, n = 13), thickened,
darkened, with a minute central pore. Conidia
solitary or catenate, sometimes subcylindrical
but mostly slightly obclavate, straight or
slightly curved or sinuous, (4)1687 × 24 µm
(
x
= 30.57 × 3.4 µm, n = 14), 06-septate, pale
olivaceous, wall 0.250.5 µm wide (
x
= 0.3
µm, n = 14), smooth or finely verruculose, apex
rounded or subtruncate with a thickened hilum,
base short obconically truncate, with a basal
hilum 11.5 µm wide (
x
= 1.32 µm, n = 9),
wall thickened 0.50.8 
x
= 0.54 µm,
n = 9).
Colonies on PDA after 3 weeks at 250C
spreading surface ridged, black and brown in
the centre, grey margin, reaching 25 mm in
diam. 18 µm wide (
x
= 3.38 µm, n = 30),
septate, constricted at the septa, distance
between septa 420 µm (
x
= 14.2 µm, n = 30),
brownish to subhyaline, wall 0.250.80 µm (
x
= 0.45 µm, n = 30), smooth or verruculose.
Conidia not formed in the culture.
Hosts Meyna laxiflora Robyns, M.
pubescens (Kurz) Robyns (Rubiaceae).
Distribution Asia: India, Laos.
Materials examined Vientiane Capital,
Xaythany District, Houay Den Meuang and
Dong Mak Khai villages, dry dipterocarp forest,
on leaves of Meyna pubescens, 26 April 2006,
P. Phengsintham (P29, MFLU12-2210,
holotype); ibid., 10 March 2007, P.
Phengsintham (P295).
Notes The collections from Laos are
very similar to the type collection from India
which is, according to the original description,
characterized as follows: conidiophores
superficial, 1652 × 35.5 µm; conidia
cylindrical, obclavate, 1292 × 2.54 µm,
olivaceous-brown, verruculose. Meyna
pubescens is a new host species for this fungus.
The relation of Zasmidium meynae-laxiflorae
and Z. vangueriae (Thirum. & Mishra) Kamal
(Kamal 2010), both species described from
India on Meyna laxiflora (= Vangueria
spinosa), is not clear. The two taxa are similar,
but the latter species was described with much
longer and somewhat wider conidia, 30258 ×
34.5 µm, formed singly, sometimes with
lateral branchlets.
Fig. 156 Zasmidium meynae-laxiflorae on
Meyna pubescens: 1. Stroma with attached
conidiophore. 23. External mycelia with
attached conidiophores. 45. Conidiophores. 6.
External mycelium with attached young
conidiophore. 711. Conidia. Bar = 10 µm.
(79) Zasmidium micromeli Phengs., K.D. Hyde
& U. Braun, Cryptog. Mycol. 31: 319, 2010.
Figs 158159.
Leaf spots variable, more or less
irregularly orbicular, 230 mm diam., typically
brown. Caespituli hypophyllous, conspicuous.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
143
Mycelium external; hyphae branched, 24 µm
wide (
x
= 3 µm, n = 10), septate, constricted at
the septa, distance between septa 622 µm (
x
=
13.8 µm, n = 10), pale olivaceous-brown, thin-
walled 0.51 µm wide (
x
= 0.63 µm, n = 10),
verruculose. Stromata absent. Conidiophores
borne on external hyphae, unbranched,
cylindrical, 10205 × 34 µm (
x
= 89.8 × 3.57
µm, n = 23), 520-septate, distance between
septa 519 µm (
x
= 12 µm, n = 30), mid golden
brown, wall 0.50.8 µm (
x
= 0.73 µm, n = 30),
smooth. Conidiogenous cells integrated,
terminal or intercalary, 819 × 33.5 µm (
x
=
12.3 × 3.07 µm, n = 7), cylindrical, somewhat
swollen and curved at the apex; conidiogenous
loci forming minute, dark or refractive scars on
lateral and terminal denticles, 11.5 µm diam.
(
x
= 1.2 µm, n = 8), giving rise to branched
conidial chains, wall 0.50.8 µm wide (
x
=0.62
Fig. 157 Zasmidium meynae-laxiflorae on
Meyna pubescens from leaf spot: 12 Lesions
on host leaves (1. upper surface and 2. lower
surface). 3. Caespituli. 4. Stroma with attached
conidiophores. 5. Conidiophores. 67. External
mycelia with attached conidiophores. 8.
Conidiophore with attached young conidia. 9.
External with attached young conidiophores.
1012. Conidia. Bars 12 = 10 mm, 412 = 10
µm.
µm, n = 8), thickened, darkened. Conidia
solitary or catenate, sometimes ellipsoidal-
ovoid or subcylindrical, but mostly slightly
obclavate, straight or slightly curved or sinuous,
16145 × 24 µm (
x
= 55.2 × 3.01 µm, n =
30), 19-septate, pale olivaceous, wall 0.30.5
µm wide (
x
= 0.42 µm, n = 30), smooth or
finely verruculose, apex rounded or
subtruncate; base short tapered, hila 12 µm
wide (
x
= 1.33 µm, n = 30), wall 0.30.5 µm
wide (
x
= 0.4 µm, n = 30), thickened and
darkened.
Colonies on PDA after 3 weeks at 25°C
with spreading mycelium, surface ridged, dark
brown in the centre and grey margin, reaching
812 mm diam., hyphae often constricted at the
septa, distance between septa 620 × 24 µm
(
x
= 10.2 × 3.7 µm, n = 30), thin-walled 0.3
0.8 µm (
x
= 0.52 µm, n = 30), brownish to
brown, smooth or verruculose. Conidiophores
and conidia not formed in culture.
Hosts Micromelum hirsutum Merr.
(Rutaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Dongmakhai Village, Fallow
forest, on leaves of Micromelum hirsutum, 4
February 2010, P. Phengsintham (P551,
MFLU12-2209, holotype); ex-type living
culture deposited in Systematic Mycology and
Lichenology Laboratory, Institute of
Microbiology, Chinese Academy of Sciences,
Beijing, PR China.
Notes Stenellopsis nepalensis R.K.
Chaudhary & S.K. Singh on Clausena
platyphylla in Nepal (Chaudhary et al. 1996) is
the only additional zasmidium-like
hyphomycete on a host of the Rutaceae.
However, this species is quite distinct in having
fasciculate conidiophores, lacking superficial
hyphae and consistently singly formed, wider
conidia (27125 × 38 µm).
(80) Zasmidium pavettae Phengsintham, K.D.
Hyde & U. Braun, Cryptog. Mycol. 30(2): 251,
2009. Figs 160161.
Leaf spots circular to irregular, 38 mm
in diam., grey-brown in the centre, and with
greyish margin. Caespituli amphigenous,
inconspicuous. Mycelium internal and external:
internal hyphae inconspicuous; external hyphae
branched, 23 µm wide (
x
= 2.8 µm, n= 17),
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
144
Fig. 158 Zasmidium micromeli on
Micromelum hirsutum: 13. External
mycelium with attached conidiophores. 48.
Conidia. Bar = 10 µm.
Fig. 159 Zasmidium micromeli on
Micromelum hirsutum from leaf spot: 12.
Lesions on host leaves (1. upper surface and
2. lower surface). 3. Caespituli. 4. External
mycelia with attached conidiophore. 57.
Conidiophores. 812. Conidia. 13. Culture.
14. Colony in culture. Bars: 12, 13 = 10
mm, 812 = 10 µm.
septate, constricted at the septa, distance
between septa 924 µm (
x
= 15.5 µm, n = 17),
pale olivaceous-brown, wall 0.250.5 µm wide
(
x
= 0.44 µm, n = 17), verruculose. Stromata
not well-developed, subglobose, approximately
       
ellipsoidal to angular in outline, 3  
(
x
= 3.75 µm, n = 8), brown to dark brown,
wall 0.50.8 µm wide (
x
= 0.54 µm, n = 8),
smooth. Conidiophores fasciculate or solitary,
arising from stromata and borne on external
mycelia hyphae, unbranched, cylindrical, 1234
× 34 µm (
x
= 16.8 × 3.5 µm, n = 5), 01-
     
conidiogenous cells integrated, terminal or
intercalary, 1920 × 34 µm, cylindrical, paler
at the apex; conidiogenous loci forming minute,
dark or refractive scars on lateral and terminal
denticle-like protuberances, giving rise to
branched conidial chains, 12 µm wide,
planate, wall 0.81 µm wide, thickened,
darkened. Conidia solitary or catenate,
sometimes subcylindrical but mostly slightly
obclavate, straight or slightly curved or sinuous,
(5)659(65) × 24 µm (
x
= 20 × 2.75 µm, n
= 20), 05-septate, pale olivaceous, wall 0.25
0.5 µm wide (
x
= 0.36 µm, n = 20), smooth or
finely verruculose, apex rounded or
subtruncate, with a conspicuous hilum, base
short obconically truncate, hila approximately 1
0.8 µm thick.
Colonies on PDA after 3 weeks at 250C
spreading surface ridged, black and brown in
the centre, grey margin, reaching 10 mm in
diam., hyphae 14 µm wide (
x
= 2.6 µm, n =
30), septate, constricted at the septa, distance
between septa 616 µm (
x
= 11 µm, n = 30),
brownish to subhyaline, wall 0.250.5 µm (
x
=
0.44 µm, n = 30), smooth or verruculose.
Conidia not formed in the culture.
Host Pavetta indica L. (Rubiaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Houay Den Meuang and
Dong Mak Khai villages, fallow forest, on
leaves of Pavetta indica, 26 April 2006, P.
Phengsintham (P24, MFLU12-2211, holotype);
ibid., 10 March 2007, P. Phengsintham (P261,
paratype).
Notes Several Zasmidium species, all
described from India, have been recorded on
hosts belonging to the Rubiaceae. Zasmidium
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
145
canthii (J.M. Yen, A.K. Kar & B.K. Das)
Kamal (Yen et al. 1982a, Kamal 2010),
described from West Bengal on Canthium
dedymum, is morphologically close to the
fungus on Pavetta indica, but this species is
distinguished by lacking stromata, consistently
solitary conidiophores and somewhat longer,
wider conidia, 18112 × 34.5 µm. Z. meynae-
laxiflorae (K. Srivast., A.K. Srivast. & Kamal)
Phengsintham, K.D. Hyde & U. Braun
(Srivastava et al. 1995, Phengsintham et al.
2009) is another similar species, but it is
distinct by its much longer conidiophores, up to
        -
developed fascicles of 920 stalks. Most of the
other Stenella species on Rubiaceae are
characterized by having much longer
pluriseptate conidia, viz., Z. coffeae (J.M. Yen,
A.K. Kar & B.K. Das) Kamal (conidia 33200
× 35(6) µm, see Yen et al. 1982a), Stenella
hyptiantherae S.K. Singh, Arch. Singh &
Kamal (conidia 18177 × 35 µm, see Singh et
al. 1997), Z. plectroniae (Ponnappa) Kamal
(conidia 40210 × 23.5 µm, see Ellis 1976), Z.
vangueriae (Thirum. & Mishra) Kamal (conidia
30258 × 34.5 µm, see Thirumalachar &
Mishra 1963), and Z. xeromphigena (J.M. Yen,
A.K. Kar & B.K. Das) Kamal (conidia 20156
× 34 µm, see Yen et al. 1982b). Zasmidium
naucleae (A.K. Das) Kamal (Das 1990, Kamal
2010) differs in having larger, well-developed
stromata with large fascicles composed of 755
conidiophores, and much longer, pluriseptate
conidiophores, 33115 × 35 µm.
Literature Yen et al. (1982: 3557),
Srivastava et al. (1995: 233236),
Thirumalachar & Mishra (1963: 2983).
(81) Zasmidium sp. Figs 162163.
Leaf spots variable, more or less
irregularly orbicular, 24 mm diam., grey-
brown in the center, dark brown at the margin.
Caespituli hypophyllous, conspicuous.
Mycelium external; hyphae branched, 46 µm
wide (
x
= 5 µm, n = 7), septate, constricted at
the septa, distance between septa 1536 µm (
x
= 23.5 µm, n = 7), pale olivaceous-brown, thin-
walled 0.51 µm wide (
x
= 0.63 µm, n = 10),
verruculose. Stromata absent. Conidiophores
borne on external hyphae, unbranched,
cylindrical, 1896 × 34 µm (
x
= 56.58 × 3.64
µm, n = 13), 15-septate, distance between sep-
Fig. 160 Zasmidium pavettae on Pavetta
indica: 13. Conidiophores. 4. External
mycelium with attached conidiophores. 69.
Conidia. Bar = 10 µm.
Fig. 161 Zasmidium pavettae on Pavetta
indica from leaf spot: 12 Lesions on host
leaves (1. upper surface and 2. lower surface). 3.
Stroma. 45. Conidiophores. 6. External
mycelium with attached young conidiophores.
710. Conidia. 11. Culture. Bars 12, 11 = 10
mm, 310 = 10 µm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
146
ta 1138 µm (
x
= 19.76 µm, n = 30), mid
golden brown, wall 0.50.8 µm (
x
= 0.6 µm, n
= 30), smooth. Conidiogenous cells integrated,
terminal or intercalary, 1238 × 34 µm (
x
=
23.05 × 3.05 µm, n = 13), cylindrical,
somewhat swollen and curved at the apex;
conidiogenous loci forming minute, dark or
refractive scars on lateral and terminal
denticles, 11.5 µm diam. (
x
= 1.2 µm, n = 5),
giving rise to branched conidial chains, wall
0.50.8 µm wide (
x
= 0.6 µm, n = 5),
thickened, darkened. Conidia solitary or
catenate, sometimes ellipsoidal-ovoid or
subcylindrical, but mostly slightly obclavate,
straight or slightly curved or sinuous, 819 ×
23 µm (
x
= 13.72 × 2.35 µm, n = 5), 01-
septate, pale olivaceous, wall 0.30.5 µm wide
(
x
= 0.36 µm, n = 5), smooth or finely
verruculose; apex rounded or subtruncate at the
ends; base short tapered at the base to the
hilum, 12 µm wide (
x
= 1.28 µm, n = 5), wall
0.30.5 µm wide (
x
= 0.36 µm, n = 5),
thickened and darkened.
Colonies on PDA after 3 weeks at 25°C
with spreading mycelium, surface ridged, grey
brown in the centre and dark brown margin,
reaching 1522 mm diam.
Hosts: Spondias pinnata (L. f.) Kurz
(Anacardiaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Houay Denmuang Village,
fallow forest, on leaves of Spondias pinnata, 27
July 2010, P. Phengsintham (P605).
Notes Zasmidium has not yet been
recorded on this host, but the present material is
not sufficient for a final conclusion and
description as new species.
Literature Crous & Brown (2003: 27,
key).
(82) Zasmidium suregadae Phengsintham, K.D.
Hyde & U. Braun, Cryptog. Mycol. 30(2): 258,
2009. Figs 164165.
Leaf spots circular to irregular, 13 mm
diam., grey to grey-brown in the centre, and
with yellow-green margin. Caespituli
amphigenous, small, scattered, brown.
Mycelium internal and external; internal hyphae
branched, 2 
x

septate, constricted at the septa, distance
between septa 4  
x
= 10.08   
Fig. 162 Zasmidium sp. on Spondias pinnata:
13. External mycelium with attached
conidiophores. 46. Conidia. Bars = 10 µm.
Fig. 163 Zasmidium sp. on Spondias pinnata
from leaf spot: 1. Caespituli. 23. External
mycelia with attached conidiophore. 46.
Conidiophores. 79. Conidia. 10. Culture. Bars
29 = 10 µm, 10 = 10 mm.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
147
13), pale olivaceousbrown, wall 0.3 
wide (
x
       
hyphae superficial, branched, 1  wide (
x
       nstricted at the
septa, distance between septa 6  
x
=
-brown, wall
0.3
x

smooth to verruculose. Stromata well-
developed, subglobose, 35  
brown, stroma cells oval, ellipsoidal to angular
in outline, 3   
x
    
30), brown to dark brown, wall 0.5
(
x
 
fasciculate, arising from stromata (934 per
fascicle) and solitary, borne on external
mycelial hyphae, unbranched, cylindrical, (34
)4086(110) × 3
x
= 65.8 × 
= 30), 29-septate, distance between septa 720
 
x
        
brown, wall 0.5
x

smooth, 02 times geniculate; conidiogenous
cells polyblastic, integrated, terminal or
intercalary, 820 × 2  
x
= 15.8 × 3.14
        
conidiogenous loci small, conspicuous, sub-
planate to planate, 1   
x
= 1.15

x
= 0.7
n = 10), thickened, darkened. Conidia solitary
or catenate, sometimes subcylindrical, but
mostly slightly obclavate, occasionally with
lateral branches, straight or slightly curved to
sinuous, (16)17128(153) × 2  
x
=
74.13 ×      110-septate, pale
olivaceous, wall 0.3   
x
= 0.36

rounded or subtruncate, at the end of some
conidia with a thickened hilum, base truncate,
hila slightly thickened and darkened, 1 
wide (
x
=        
wide (
x

Colonies on PDA after 3 weeks at 25oC
spreading surface ridged, grey-brown in the
centre, margin greenish black, reaching 11 mm
diam., hyphae 1   
x
    
30), septate, constricted at the septa, distance
between septa 6
x

greenish to brownish, wall approximately 0.25
  
x
       
verruculose. Conidia not formed in the culture.
Hosts Suregada multiflora (Juss.) H.
Baill. (Euphorbiaceae).
Distribution Asia: Laos.
Material examined Vientiane Capital,
Xaythany District, Houay Den Meuang Village,
on leaves of Suregada multiflora, 8 May 2006,
P. Phengsintham (P36, MFLU12-2212,
holotype). GenBank accession no (ITS,
KC677914; LSU, KC677939).
Notes Five Zasmidium spp. have been
recorded on other hosts of the family
Euphorbiaceae, but there is no record from
Suregada spp. Zasmidium bischofiae-javanicae
(R.K. Chaudhary, M.S. Tripathi, P.N. Singh &
S. Chaudhary) Kamal (Chaudhary et al. 2001),
Z. brideliicola (K. Srivast., A.K. Srivast. &
Kamal) Kamal (Srivastava et al. 1994), Z.
gorakhpurensis (Kamal & P. Kumar) Kamal
(Kamal & Kumar 1980, de Hoog et al. 1983) as
well as Z. aporosae, described above, are
distinct from Z. suregadae by having
conidiophores that are consistently formed
singly, i.e. stromata and fasciculate
conidiophores are lacking. Zasmidium
manihotis ( Stenella manihotis, Braun &
Freire 2004), described from Brazil on Manihot
sp., is a similar species with solitary as well as
fasciculate conidiophores, but the stromata are
much smaller, 10    
lacking, the conidiophores are formed in small
fascicles, they are wider, 3   
conidia are also wider, 3  Stenella
ateramnae R.F. Castaneda & B. Kendr.
(Castaneda & Kendrick 1991), described from
Cuba on Ateramnus lucidus, is close to the new
species by having large stromata, 5080 × 25
     
fascicles, but the brown conidia are much
         
Furthermore, the latter species has been
described from fallen leaves (lesions lacking)
with usually internal mycelium (verruculose
external hyphae not described).
Literature Kamal & Kumar (1980:
265269), Hoog et al. (1983: 485490),
Castañeda & Kendrick (1991: 1132),
Srivastava et al. (1994: 515520), Chaudhary et
al. (2001: 226232), Crous & Braun (2003:
Key).
1.3.3.2 Morphologically similar cercosporoid
fungi
(83) Cladosporium colocasiae Sawada, Trans.
Nat. Hist. Soc. Taiwan 25: 125, 1916. Figs
166167.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
148
Fig. 164 Zasmidium suregadae sp. nov on
Suregada multiflorae: 1. Stroma with attached
conidiophores. 2. External hypha with attached
conidiophores. 3. Conidiophore. 48. Conidia.

Fig. 165 Zasmidium suregadae sp. nov. on
Suregada multiflora from leaf spots: 12
Lesions on host leaves (1. upper surface. 2.
lower surface). 3. Caespituli. 45. Stromata
with attached conidiophores. 6. Conidiophores.
7. External hypha with attached conidiophore.
812. Conidia. 13. Culture. 14. Mycelia. Bars
12, 13 = 10 mm, 4
Leaf spots orbicular or irregular, 225
mm in diameter, pale to greyish brown in the
centre, grey-yellow margin. Caespituli
amphigenous, effuse, velvety. Mycelium
external; hyphae branched, 45.5 µm wide (
x
=
4.75 µm, n = 7), septate, constricted at the septa,
distance between septa 1012 µm long (
x
= 11
µm, n = 7), brownish, hyaline, wall 0.50.8 µm
wide (
x
= 0.65 µm, n = 7), smooth. Stromata
absent. Conidiophores macronematous, solitary,
arising from external hyphae, erect, straight or
curved, geniculate, branched, small rounded to
subconic tip, 28165 × 39 µm (
x
= 58.9 × 4.79
µm, n = 20), 26-septate, distance between septa
835 µm (
x
= 19 µm, n = 30), pale to medium
brown; wall 0.50.8 µm wide (
x
= 0.67 µm, n =
30), smooth, terminal and intercalary vesicular
swelling (nodose) 45 µm wide (
x
= 4.5 µm, n
= 30). Conidiogenous cells polyblastic,
integrated, terminal and intercalary, 1535 × 2
3.5 µm (
x
= 11 × 2.9 µm, n = 12), pale
olivaceous or greenish; conidiogenous loci
conspicuous, thickened and darkened towards
the apex 11.5 µm wide (
x
= 1.67 µm, n = 15),
wall 0.50.8 µm wide (
x
= 0.7 µm, n = 15),
darkened. Conidia solitary, catenate, cylindrical
rounded at the ends, ellipsoidal, limoniform or
spherical, 4.530 × 26 µm (
x
= 11.25 × 3.37
µm, n = 30), 03-septate, slightly constricted at
the septa; subhyaline to pale olivaceous; wall
0.30.5 µm wide (
x
= 0.35 µm, n = 30), smooth,
apex the terminal conidia broadly rounded at the
apex and some conidia with a small, distinctly
protuberant scar 0.51.5 µm wide (
x
= 0.83 µm,
n = 30), wall 0.30.5µm wide (
x
= 0.36 µm, n =
30), thickened and darkened; base with a
prominent slightly thickened hilum, 0.52 µm
wide (
x
= 1 µm, n = 30), wall thick 0.30.5µm
wide (
x
= 0.35 µm, n = 30).
Hosts Colocasia esculenta (L.) Schott
(Araceae).
Distribution Africa: Ethiopia, Guinea,
Mauritius, Nigeria; Asia: Hong Kong, Laos,
Nepal, Sabah, Sarawak, Pakistan, Taiwan,
Thailand; Oceania: New Caledonia.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Colocasia esculenta 6 September 2006, P.
Phengsintham (P185).
Notes The collection from Laos agrees
with the description of Cladosporium
colocasiae given by Ellis (1971) [conidiophores
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
149
up to 180 µm long and 46 µm and conidia size
1232 × 69 µm, 13-septate], but the conidia
from Laos vary from 03-septate.
Literature Ellis (1971: 312).
Fig. 166 Cladosporium colocasiae on
Colocasia esculenta from leaf spots: 14.
Conidiophores. 59. Conidia. Bars = 10 µm.
(84) Periconiella lygodii Arch. Singh, Bhalla &
S.K. Singh ex U. Braun, Feddes Repert. 115:
53, 2004. Figs 168169.
Leaf spots black, striiform, restricted by
lateral leaf veins and therefore appearing
oblique, 15×1 mm, becoming confluent and
eventually causing almost complete blackening
of the leaflet. Caespituli amphigenous,
conspicuous. Mycelium intercellar,
inconspicuous. Stromata absent or small,
intraepidermal, up to 15 µm diam, consisting of
swollen, brown hyphal cells. Conidiophores
single, arising through stomata, medium brown,
smooth, 60175 × 7
x
= 118 × 7.5 µm,
n = 5), 511-septate, distance between septa 7
40 µm (
x
= 18.8 µm, n = 17), pale to medium
brown, wall 0.50.8 µm wide (
x
= 0.66 µm, n
= 17), smooth. Conidiogenous cells terminal,
1722 × 5  
x
= 20.5 × 4.5 µm, n = 7);
conidiogenous loci usually restricted to the apex
of the cell, slightly raised, slightly thickened
and rather refractive than darkened,
Fig. 167 Cladosporium colocasiae on
Colocasia esculenta from leaf spots: 1. Lesions
on host leaves (upper surface). 24.
Conidiophores. 910. Conidia. Bars 1 = 10 mm,
210 = 10 µm.
     
tapering towards the apex, straight or slightly
curved, pale brown, smooth, 1758 × 45

x
= 32.8 × 4.5 µm, n = 12), 07-septate,
wall 0.30.5 µm wide (
x
= 0.47 µm, n = 12),
smooth, basal hilum unthickened to thickened

Hosts Lygodium flexuosum (L.) Sw.,
L. japonicum (Thunb.) Sw. (Schizaeaceae).
Distribution Asia: India, Laos,
Taiwan.
Material examined Khammoune
Province, Nakai District, Nahao Village, fallow
forest, on leaves of Lygodium flexuosum, 3 June
2010, P. Phengsintham (P579).
Notes The collection from Laos agrees
with the description of Periconiela lygodii
published by Singh et al. (1998) [conidiophores,
90345 × 96 septa, septa 875
     
towards the apex, straight or slightly curved,
pale brown, smooth, 39-septate, 275 × 57

Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
150
Literature Braun (2004), Singh et al.
(1998).
Fig. 168 Periconiela lygodii on Lygodium
flexuosum from leaf spots: 1. Stromata with
attached conidiophores. 2. Base
conidiophores. 3. Apex of conidiophores. 4
8. Conidia. Bar = 10 µm.
(85) Pseudocercosporella bakeri (Syd. & P.
Syd.) Deighton, Mycol. Pap. 133: 41, 1973.
Figs 170171.
 Cylindrosporium bakeri Syd. & P.
Syd., Ann. Mycol. 14: 372, 1916.
= Ramularia ipomoeae F. Stevens, Bern.
Bishop Mus. Bull. 19: 150, 1925.
= Cercosporella ipomoeae Sawada,
Rep. Govt. Res. Inst. Dept. Agric. Formosa 86:
161, 1943.
= Cercosporella ipomoeicola Sawada,
Spec. Publ. Coll. Agric. Natn. Taiwan Univ. 8:
192, 1959.
= Pseudocercosporella ipomoeae
Deighton, Mycol. Pap. 133: 39, 1973.
Leaf spots subcircular, angular to
irregular, 220 mm diam, pale greenish,
becoming pale brown, finally greyish white;
margin indefinite or with a narrow brown
border. Caespituli amphigenous, punctiform to
effuse, whitish.
Fig. 169 Periconiela lygodii on Lygodium
flexuosum from leaf spots: 1. Lesions on host
leaf. 2. Conidiophores. 3. Base of conidia. 4.
Apices of conidiophores. 59. Conidia. Bars 3
9 = 10 µm.
Mycelium internal, consisting of hyaline,
septate, sparingly branched, 1.53.5 µm wide
hyphae; Stromata absent or small,
intraepidermal, 1040 µm diam, consisting of
swollen, hyaline hyphal cells. Conidiophores
usually aggregated, occasionally subfasciculate,
up to about 20, arising from inner hyphae or
hyphal aggregations, erumpent through the
cuticle, short, erect, subcylindrical, conical,
straight, curved to geniculate-sinuous, (2.5
)2040 × (2)2.54(6) µm, 02-septate.
Conidiogenous cells terminal, integrated, (2.5
)1020 × 3.54 µm; conidial scars usually more
or less truncate, 1.53 µm diam, unthickened,
not darkened. Conidia solitary, subcylindrical,
somewhat acicular to slightly obclavate, (35
)4065 × (2.5)3.54 µm, 13-septate in vivo,
not constricted, hyaline, smooth, apex obtuse,
base truncate or slightly obconically truncate,
unthickened (adapted from Braun 1995). In
vitro on OA, conidia (30)4660(75) × (3.5
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
151
)4(4.5) µm, 17-septate, subcylindrical,
guttulate, hyaline, smooth, at times narrowly
obclavate, tapering in apical part to acutely
rounded apex, and in basal part to long
obconically subtruncate or subcylindrical base;
base truncate, 23 µm wide, but with marginal
thickening along the rim, which is also seen on
scars on conidiogenous cells (but not observed
in vivo).
Colonies on PDA after 3 weeks at 25°C
black-grey mycelium, reaching 23 mm diam.
Hosts Ipomoea indica (Burm.) Merr.
(= I. acuminata (Vahl) Roem. & Schult., I.
aquatica Forssk., I. alba L. (= I. bona-nox L.),
Ipomoea sp. (Convolvulaceae).
Distribution Africa: Sudan; Asia:
Brunei, China (Hong Kong), Laos, Philippines,
Sarawak and Sabah, Taiwan; Oceania: Hawaii.
Material examined Vientiane Capital,
Xaythany District, Xay Village, rice paddy, on
leaves of Ipomoea aquatica, rice paddy, 14
May 2006, P. Phengsintham (P48), ibid., 12
August 2008, P. Phengsintham (P297), ibid., 8
September 2009, P. Phengsintham (P321).
Notes Pseudocercosporella ipomoeae
was described by Deighton (1973) based on its
short, narrow conidia. However, an examination
of type materials and additional collections of
P. bakeri and P. ipomoeae led Braun (1995) to
the conclusion that they represented a single
taxon. As shown in the present study, conidial
dimensions vary considerably from host
material to culture, and hence we support the
conclusion of Braun (1995) and treat this as a
single species, P. bakeri, for which an epitype
is designated. This species clusters as a close
   Dothistroma    
Crous et al. 2009c).
Literature Chupp (1954: 171),
Deighton (1973: 3842), Hsieh & Goh (1990:
92), Braun (1995: 159160).
(86) Scolecostigmina mangiferae (Koord.) U.
Braun & Mouch., New Zealand J. Bot. 37: 323,
1999. Figs 172173.
= Cercospora mangiferae Koord., Verh.
Kon. Ned. Akad. Wetensch., Afd. Natuurk.,
Tweede Sect., 13: 236, 1907.
= Stigmina mangiferae (Koord.) M.B.
Ellis, Mycolol. Pap. 72: 49, 1959.
= Sciniatosporum mangiferae (Koord.)
Fig. 170 Pseudocercosporella bakeri from
Ipomoea aquatica: 1. Stroma with attached
conidiophores, 23. Conidiophores. 510.
Conidia. Bar = 10 µm
Fig. 171 Pseudocercosporella bakeri on
Ipomoea aquatica from leaf spots: 12. Lesions
on host leaves (1. upper surface, 2. lower
surface). 3. Caespituli. 4. Stroma whith
attached conidiophore. 5. Conidiophore. 6.
Conidiophore with attached conidium. 710.
Conidia. Bars 12 = 10 mm, 410 = 10 µm.
12 septete, distance between septa 760 µm (
x
= 37.03 µm, n = 26), Morgan-Jones, Canad. J.
Bot. 49: 999, 1971.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
152
Leaf spots round to angular black spots,
113 mm diam. (
x
= 4 mm, n = 13), pale grey or
black in the centre, and with yellowish margin.
Caespituli hypophyllous, minute, pucktiform,
dark olivaceous-brown. Mycelium internal,
inconspicuous. Stromata oval or ellipsoidal, 13
25 µm diam. (
x
= 18.44 µm, n = 9), dark brown,
stromatal cells angular in outline, 37 µm wide
(
x
= 3.84 µm, n = 20), wall 0.81 µm (
x
= 0.84
µm, n = 20), smooth. Conidiophores fasciculate,
arising from stomata (14 per fascicle),
unbranched, 01- geniculate, lageniform,
straight or curved, 824 × 35 µm (
x
= 12 ×
4.11 µm, n = 9), with up to 3 annellations, 02-
septate, distance between septa 89 µm (
x
= 8.5
µm, n = 5), olivaceous-brown, paler and narrow
at the apex, wall 0.51 µm wide (
x
= 0.9 µm, n
= 9), smooth. Conidiogenous cells terminal,
lageniform, 9 × 5 µm; conidiogenous loci small,
at the apex, conspicuous, ovoid to oval, up to 2
µm, wall 0.8 µm thickened. Conidia solitary,
cylindrical to obclavate, straight to curved, 21
77 × 35 µm (
x
= 50.53 × 3.84 µm, n = 13), 2
10-septate, reddish brown, pale near the apex,
wall 0.30.8 µm wide (
x
= 0.53 µm, n = 13),
smooth, tip subobtuse, base truncate, hila 23
µm wide (
x
= 2.85 µm, n = 9), wall 0.51 µm
(
x
= 0.8 µm, n = 9), thickened and darkened.
Hosts Mangifera foetida Lour., M.
indica L. (Anacardiaceae).
Distribution Africa: Angola, Congo,
Gabon, Ghana, Malawi, Mozambique, Nigeria,
São Tomé and Principe, Sierra Leone, Somalia,
Sudan, Tanzania, Uganda; Asia: Brunei, China,
Indonesia, Japan, Java, Laos, Malaysia, Nepal,
Philippines, Sri Lanka, Taiwan, Thailand;
North America and West Indies: Cuba,
Dominican Republic, Haiti, Honduras, Jamaica,
Mexico, Panama, Puerto Rico, Trinidan and
Tobago, Virgin Islands; Australia; Oceania:
Cook Islands, Fiji, New Caledonia, Papua New
Guinea, Samoa, Solomon Islands, Vanuatu;
South America: Colombia, Suriname,
Venezuela.
Material examined Vientiane Capital,
Xaythany District, Dong Makkhai Village,
Garden, on leaves of Mangifera indica, 18
December 2008, P. Phengsintham (P388).
Notes The collection from Laos has
conidiophores and conidia of a similar size to
those described by Ellis (1971) and Hsieh &
Goh (1990), but the conidiophores have only
three annellations.
Literature Saccardo (1910: 253), Ellis
(1971: 146), Hsieh & Goh (1990: 21), Braun et
al. (1999: 323), Crous & Braun (2003: 265).
Fig. 172 Scolecostigmina mangiferae from
leaf spots of Mangifera indica: 1. Stroma with
Conidiophore. 23. Conidiophores. 48.
Conidia. Bars = 10 µm.
(87) Spiropes clavatus (Ellis & Martin) M.B.
Ellis. Dematiaceous hyphomycetes: 256,
1971. Figs 174175.
Leaf spots circular to irregular, 215 mm
diam., black in the centre, and with dark
brown or black margin. Caespituli effuse,
epiphyllous, scattered, dark blackish brown,
hairy. Mycelium external, hyperparasitic on
Meliora; hyphae branched, 34 µm wide (
x
=
3.68 µm, n = 16), septate, constricted at the
septa, distance between septa 525 µm (
x
=
11.68 µm, n = 16), brownish, wall 0.51 µm
wide (
x
= 0.62 µm, n = 16). Stromata absent.
Conidiophores arising from secondary
mycelium, threads very tightly packed
together to form erect, dark blackish brown to
black synnemata, 410609 × 1835 µm (
x
=
536.53 × 29.28 µm, n = 5), spraying out at the
apex and base, individually brown to dark
brown, smooth, cylindrical, not branched,
straight to curved, 410609 × 36 µm (
x
=
525.43 × 4.2 µm, n = 19), 812-septate,
distance between septa 760 µm (
x
= 37.03
µm, n = 26), medium brown, paler at the apex,
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
153
wall 0.51 µm wide (
x
= 0.71 µm, n = 26),
smooth.
Fig. 173 Scolecostigmina mangiferae from
leaf spots of Mangifera indica: 12. Lesions
on host leaves (1. upper surface, 2. lower
surface). 34. Stroma with attached
conidiophores. 5. Conidiophores. 612.
Conidia (7 and10. Apex of conidia). Bars 12
= 10 mm, 312 = 10 µm.
Conidiogenous cells integrated, terminal,
cylindrical, 2560 × 47 µm (
x
= 45.5 × 5.57
µm, n = 14), pale brown; conidiogenous loci
conspicuous, scattered, subcircular, 0.52 µm
wide (
x
= 1.45 µm, n = 20), dark brown, wall
0.51.5 µm thick (
x
= 1.02 µm, n = 20).
Conidia straight or slightly flexuous, obclavate
or clavate, rostrate, dark brown in the broadest
part, paler towards the ends, 2655 × 811 µm
(
x
= 36.43 × 9.63 µm, n = 30), 13(4)-septate,
subhyaline to olivaceous brown or dark brown,
smooth, or verruculose, tip rounded, 26 µm
wide (
x
= 2.68 µm, n = 25), wall of apex 0.81
µm (
x
= 0.88 µm, n = 25) thick., base truncate
34 µm wide (
x
= 3.43 µm, n = 30), wall of the
hila 0.81 µm (
x
= 0.94 µm, n = 30) thick.
Hosts Mangifera indica L.
(Anacardiaceae).
Distribution Africa: Ghana, Malawi,
Sierra Leone, Uganda; Asia: Laos, Malaysia;
North America and West Indies: Puerto Rica;
South America: Argentina, Brazil.
Material examined Vientiane Capital,
Xaythani District, Phonsaath Village, on leaves
of Mangifera indica, 19 December 2008, P.
Phengsintham (P390).
Notes This species is newly recorded
in Laos, and it is morphological very similar to
Spiropes clavatus, but the size of conidia of the
collection from Laos is bigger and longer than
described in Ellis (1971) [1833 × 57 µm].
Literature Ellis (1971: 256).
Fig. 174 Spiropes clavatus on Mangifera
indica from leaf spots. 1. Conidiophores, 2.
Apical cells of conidiophores with attached
young conidia; 34. Apical cells of
Conidiophores, 519. Conidia. Bars = 10 µm.
Additonal cercosporoid fungi
(88) Cercospora canescens Ellis & G. Martin,
Amer. Naturalist 16: 1003, 1882.
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Lablab purpureus subsp. bengalensis (Jacq.)
Verdc. (Fabaceae), 12 September 2006, P.
Phengsintham (P172).
(89) Cercospora citrulina Cooke, Grevillea: 12:
31. 1883
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
154
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Luffa cylindrica M. Roem. (Cucurbitaceae), 20
January 2006, P. Phengsintham (P199);
Luangnamtha Province, Viengphoukha District,
Mai Village, on leaves of L. cylindrica M.
Roem., 3 May 2008, P. Phengsintham (P308).
Fig. 175 Spiropes clavatus on Mangifera
indica from leaf spots. 12. Lesions on host
leaves (1. upper surface. 2. lower surface). 3.
Conidiophores. 4. Base of conidiophores cells,
56. Apical cells of conidiophores with attached
young conidia, 712. Conidia. Bars 12 = 10
mm, 312 = 10 µm.
(90) Cercospora coffeicola Berk. & Cooke,
Grevillea 9: 99, 1881.
Material examined Khammoune
Province, Nakai District, Nahao Village, on
leaves of Coffea arabica L. (Rubiaceae), 3 June
2010, P. Phengsintham (P577).
(91) Cercospora crotalariae Sacc., Syll. Fung.
22: 129, 1913.
Material examined Luang Namtha
Province, Namtha District, Chalensouk Village,
on leaves of Crotalaria uncinella subsp.
elliptica (Roxb.) Polhill (Fabaceae), 20
February 2010, P. Phengsintham (P574).
(92) Cercospora diplaziicola A.K. Das, Indian
J. Mycol. Res. 27: 37, 1989.
Material examined Vientiane
Province, Xaysomboun District, Lak 33
Village, on fern leaves of Diplazium esculentum
(Retz.) Sw. (Woodsiaceae), 28 May 2009, P.
Phengsintham (P410).
(93) Cercospora erytrinicola Tharp, Mycologia
9: 109, 1917.
Material examined Bolikhamsay
Province, Lak 20 District, Nong Xong Village,
on leaves of Erythrina stricta Roxb. (Fabaceae),
29 June 2008, P. Phengsintham (P333).
(94) Cercospora nilghirensis Govindu &
Thirum. Sydowia 9: 224, 1955.
Material examined Luang Prabang
Province, Xiangngeun District, Lak 10 Village,
Fallow forest, on leaves of Conyza bonariensis
(L.) Cronquist (Asteraceae), 7 February 2007,
P. Phengsintham (P240); Luang Namtha
Province, Luang Namtha District, Chaleunsouk
Village, on leaves of C. bonariensis, 19
February 2010, P. Phengsintham (P562).
(95) Cercospora papayae Hansf., Proc. Linn.
Soc. London 155: 58, 1943.
(= Cercospora apii)
Material examined Vientiane Capital,
Xaythany District, Xay Village, Garden, on
leaves of Carica papaya L. (Caricaceae), 3
August 2006, P. Phengsintham (P122); Houay
Yang Village, on leaves of on C. papaya, 22
January 2007, P. Phengsintham (P197).
(96) Cercospora petersii (Berk. & M.A. Curtis)
G.F. Atk., J. Elisha Mitchell Sci. Soc. 8: 57,
1892. Material examined Bolikhamxai
Province, Thaphabath District, Hadkhai
Village, mixed deciduous forest, on leaves of
Smilax chinensis L. (Smilacaceae), 9 November
2009, P. Phengsintham (P460).
(97) Cercospora sambuci Y.L. Guo & Jiang,
Mycotaxon 74: 262, 2000.
Material examined Luangprabang
Province, Xiangngeun District, Lak 10 Village,
fallow forest, on leaves of Sambucus sp.
(Adoxaceae), 7 February 2007, P.
Phengsintham (P233).
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
155
(98) Cercospora scrophulariae (Moesz)
Chupp, A monograph of the fungus genus
Cercospora: 525, 1954.
Material examined Luangnamtha
Province, Namtha District, Chaleunsouk
Village, fallow forest, on leaves of
Scrophularia sp. (Scrophulariaceae), 20
February 2010, P. Phengsintham (P570).
(99) Cercospora sonchi Chupp., A Monograph
of the fungus genus Cercospora: 154, 1954.
Material examined Phongsaly
Province, Phongsaly District, on leaves of
Taraxacum officinale Wigg. (Asteraceae), 23
June 2010, P. Phengsintham (P591).
(100) Cercospora tridacis-procumbentis
Govindu & Thirum., Sydowia 7: 49, 1953.
(= Cercospora apii)
Material examined Vientiane Capital,
Xaythany District, Xay Village, fallow forest,
on leaves of Tridax procumbens L.
(Asteraceae), 9 June 2007, P. Phengsintham
(P282); Xaythany District, Xay Village, on
leaves of T. procubens, 18 November 2011, P.
Phengsintham (P649).
(101) Pseudocercospora centromaticola (J.M.
Yen & Lim) J.M. Yen, in Yen & Lim, Gard.
Bull. Singapore 33: 171, 1980.
Material examined Vientiane Capital,
Xaythany District, Xay Village, fallow forest,
on leaves of Centrosema pubescens Benth.
(Fabaceae), 11 May 2006, P. Phengsintham
(P44).
(102) Pseudocercospora cycleae (Chidd.)
Deighton, Mycol. Pap. 140: 143, 1976.
Material examined Sayabouli
Province, Paklay District, Sisa-art Somphou
Village, fallow forest, on leaves of Cyclea
peltata Hook. f. & Thomson (Menispermaceae),
19 August 2006, P. Phengsintham (P90).
(103) Pseudocercospora ecdysantherae (J.M.
Yen) J.M. Yen, Bull. Trimestriel Soc. Mycol.
France 97: 94, 1987.
Material examined Vientiane Capital,
Xaythany District, Nongviengkham Village, on
leaves of Ecdysanthera rosea Hook. & Arn.
(Apocynaceae), 9 August 2006, P.
Phengsintham (P133).
(104) Pseudocercospora giranensis Sawada ex
Goh & W.H. Hsieh, Trans. Mycol. Soc. Republ.
China 2: 92, 1987.
Material examined Vientiane
Province, Toulakhom District,
Phoukhaukhouay Protected Area, on leaves of
Glochidion eriocarpum Champ. ex Benth.
(Euphorbiaceae), 16 October 2006, P.
Phengsintham (P181); Xiangkhouang Province,
Paek District, Phonsavan Village, on leaves of
G. eriocarpum, 1 March 2010, P. Phengsintham
(P509).
(105) Pseudocercospora ixorae (Solheim)
Deighton, Mycol. Pap. 140: 145, 1976.
Material examined Vientiane Capital,
Xaysetha District, Patouxay Garden, on leaves
of Ixora stricta Roxb. (Rubiaceae), 15 May
2006, P. Phengsintham (P50).
(106) Pseudocercospora malloticola Goh &
W.H. Hsieh., Cercospora and similar fungi
from Taiwan: 124, 1990.
Material examined Savannakhet
Province, Vilaboury District, Naloumai Village,
on leaves of Mallotus thorelii Gagnep.
(Euphorbiaceae), 23 June 2010, P.
Phengsintham (P588).
(107) Pseudocercospora namae (Dearn. &
House) U. Braun & Crous. CBS Biodiversity
Series 1: 288, 2003.
Material examined Vientiane Capital,
Xaythany district, Xay Village, rice paddy, on
leaves of Hydrolea zeylanica (L.) Vahl
(Hydroleaceae), 6 September 2006, P.
Phengsintham (P159); Xaythany District, Xay
Village, rice paddy, on leaves of Hydrolea
zeylanica, 20 November 2009, P. Phengsintham
(P466).
(108) Pseudocercospora olacicola (Muthappa)
Kamal, M.K. Khan & R.K. Verma, Mycol. Res.
94: 241, 1990.
Material examined Vientiane Capital,
Xaythany District, Dongmakkhai Village,
dipterocarp forest, on leaves of Olax scandens
Roxb. (Olacaceae), 22 January 2007, P.
Phengsintham (192).
(109) Pseudocercospora puderi Deighton,
Mycol. Pap. 140: 90, 1976.
Current Research in Environmental & Applied Mycology Doi 10.5943/cream/3/1/2
156
Material examined Vientiane Capital,
Xaythany District, Xay Village, on leaves of
Rosa chinensis Jacq. (Rosaceae), 9 Septemebr
2006, P. Phengsintham (P164).
(110) Pseudocercospora punicae (Henn.)
Deighton, Mycol. Pap. 140: 151, 1976.
Material examined Xiangkhouang
Province, Phonsavan Village, on leaves of
Punica granatum L. (Lythraceae), 26 April
2011, P. Phengsintham (P623).
(111) Pseudocercospora sarcocephali (Vienn.-
Bourg.) Deighton, Mycol. Pap. 140: 152, 1976.
Figs 187-188
Material examined Bolikhamsay
Province, Lak 20 District, Nongxong Village,
on leaves of Sarcocephalus cordatus (Roxb.)
Miq. (Rubiaceae), 10 August 2008, P.
Phengsintham (P358); Luangnamtha Province,
Luangnamtha District, Chaleunsouk Village, on
leaves of S. cordatus, 19 February 2010, P.
Phengsintham (P557).
(112) Pseudocercospora scopariicola (J.M.
Yen) Deighton, Mycol. Pap. 140: 152, 1976
Material examined Khammoune
Province, Nakai District, Nahao Village, on
leaves of Scoparia dulcis L. (Plantagiaceae), 20
July 2011, P. Phengsintham (P644).
(113) Pseudocercospora tremicola (J.M. Yen)
Deighton [as 'trematicola'], Mycol. Pap. 140:
154, 1976.
Material examined Luangnamtha
Province, Luangnamtha District, Chaleunsouk
Village, on leaves of Trema orientalis (L.)
Blume (Cannabaceae), 19 February 2010, P.
Phengsintham (P563).
Acknowledgements
The authors thank the Mushroom
Research Foundation (MRF) for financial
support. Special thanks also go to the MRF
     
laboratory, Mae Fah Luang University (MFU)
for their assistance.
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