FIGS 17-21 - uploaded by Kevin David Hyde
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Janetia curviapicis. 17-19. Conidiogenous cells with developing conidia. 20. Conidiogenous cells and developing conidia on hypha of another hyphomycete 21. Conidia. Bar = 10 pm.
Source publication
Janetia curviapicis sp. nov., occurring on submerged wood in Australia, is described and illustrated. It differs from the previously described Janetia species in the curved or circinate apices of the conidia. This new species is compared and contrasted with the other 16 species described in the genus. An expanded generic concept is introduced to in...
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Two new hyphomycete species, Anungitea guangxiensis and Ellisembia longchiensis, are described and illustrated from specimens collected on dead branches in southern China. Anungitea guangxiensis is characterized by conidiogenous cells that are polyblastic, integrated,
terminal, smooth, and denticulate (with cylindrical denticles) and conidia produc...
Digicatenosporium polyramosum gen. & sp. nov., collected on the decaying bark of an unidentified dicotyledonous plant in Bahia, Brazil, is described and illustrated. This species is unique in its distinct unbranched conidiophores, monoblastic integrated determinate conidiogenous
cells, and highly digitate branched blastocatenate reddish to yellowis...
Brachycephala exotica gen. & sp. nov., is described and illustrated. Brachycephala exotica is characterized by distinct single conidiophores and monoblastic conidiogenous cells that produce solitary acrogenous 2–3-septate dark subglobose conidia with 1–3
branches that arise from the basal conidial cell to form scorpioid branched conidiophores.
In the course of investigating the systematics of woody litter micromycete associates in Yunnan Province, China, we found one new species in Phaeoseptaceae, one new genus and three new species in Sulcatisporaceae from 16 specimens collected (ten collections of ascomycetous teleomorphs, four collections of hyphomycetous and two collections of coelom...
Ellisembia henanensis is described and illustrated from specimens collected on dead branches in Henan Province. The fungus is characterized by distinct single unbranched erect conidiophores, monoblastic conidiogenous cells, and distoseptate fusiform to ellipsoidal conidia. Lylea tetracoila and Menispora glauca are newly recorded from China.
Citations
... Another fungus associated with living leaves, Cercospora melastomatis Pat., was transferred to Sporidesmium (Crous and Braun 2003). Hughes (1983) felt that foliicolous Sporidesmium species should be segregated from the species growing on woody substrates and transferred two foliicolous species from Sporidesmium to Janetia, whereas Goh and Hyde (1996) did not consider the substrate important and applied a broad genus concept, which again was challenged based on morphology alone by Mena-Portales et al. (2016). ...
Foliicolous fungi were collected on living plants of mycologically rarely explored plant families in the montane Quercus-Chusquea forest of western Panama. Five new species of the genera Periconiella, Pseudocercospora, Sporidesmium, and Zasmidium are morphologically described from living leaves of Myrsine coriacea (Primulaceae) and Clusia stenophylla (Clusiaceae). A species of Bomarea (B. caldasii, Alstroemeriaceae) is recorded as host for a cercosporoid fungus (Cercospora apii s.lat.) for the first time.
... Stanjehughesia curviapicis is distinguished by its hamate conidia with a characteristic curved or circinate apex, which are also narrower than those of St. obclavorostrata. The conidia of a specimen of St. curviapices described as Janetia curviapices Goh & K.D.Hyde measure 65-100 × 5.5-7.5 µm (Goh & Hyde 1996) while those of the specimen described as ...
... Some species described in Janetia could belong to Stanjehughesia, mainly after Goh & Hyde (1996) who modified Ellis' original generic concept of Janetia to include species with simple conidiophores or synnemata, monoblastic or polyblastic, denticulate conidiogenous cells, and euseptate or distoseptate, and obclavate or cylindrical conidia. ...
Four new species of Sporidesmium complex collected on plant debris in different protected areas of the Iberian Peninsula are described and illustrated. Penzigomyces basiacutus is characterized by its obclavate to rostrate conidia with a narrowly obconic-truncate basal cell and verruculose apical cell. Sporidesmium corniculatum is distinguished from other species of the genus by its occasional furcate and only transversely septate conidia and Sporidesmium tunicatum by its obclavate to rostrate, verrucose conidia with an apical mucilaginous sheath tunica. Stanjehughesia obclavorostrata is distinguished by its obclavate to rostrate conidia with the basal cell sometimes darker than the rest.
... Notes: Almeida et al. (2014) recently transferred Janetia curviapicis Goh & K.D. Hyde (Goh & Hyde, 1996b) to Stanjehughesia Subram. based on the presence of monoblastic instead of polyblastic, non-denticulate conidiogenous cells including also the morphologically similar species S. hamatiella W.P. Wu (Wu & Zhuang, 2005) as a synonym. ...
A set of historical specimens collected by the American mycologist Charles Leonard Smith in southeastern Nicaragua during 1896 and currently deposited at the Herbarium of the Charles University in Prague (PRC) was examined for the presence of microfungi. Despite the age of the specimens, twenty-two taxa were identified, seventeen of them to species level and other five to generic level. All of them are recorded for the first time from Nicaragua. Cryptophiale cf. kakombensis and Sporoschisma juvenile were found associated with their putative teleomorphic states. Historical facts surrounding the expedition source of these samples and bibliographical data about Smith are also given.
... In culture: slow-growing (3.7-4.5 cm diam, after 27 days), chrysanthemoid to subcircular, flat, to convex, cottonose aerial mycelium accompanied by immersed growth within medium, dense, or without aerial mycelium and internal mycelium irradiating and sinuose and raising from the medium on radial strands, greenish centrally glaucous, followed by a periphery of pale olivaceous buff thick ring of mycelium, or olivaceous grey with pronounced diurnal zonation (under alternating light but less pronounced in the dark), bluish reverse, no sporulation. Notes: The genus Janetia M. B. Ellis has 20 species that are characterized by the production of euseptate or distoseptate, phragmosporous conidia with schizolytic secession formed on pigmented, denticulate, monoblastic or polyblastic, integrated conidiogenous cells [30,31,32,33,34,35] (Table 3). The two new species Janetia wilsoniae and Janetia dimorphandra-mollis have significantly different morphology. ...
... Janetia cubensis has conidia with a morphology which is similar to that of Janetia wilsoniae. Nevertheless, Goh & Hyde [32] suggested that it is unlikely that J. cubensis belong to Janetia because it has rhexolytic conidial secession and its conidiogenous "denticles" do not appear to be bulbous [32,35]. Therefore, Janetia wilsoniae cannot be adequately placed in any known species of Janetia and is described here as a new species. ...
... Janetia cubensis has conidia with a morphology which is similar to that of Janetia wilsoniae. Nevertheless, Goh & Hyde [32] suggested that it is unlikely that J. cubensis belong to Janetia because it has rhexolytic conidial secession and its conidiogenous "denticles" do not appear to be bulbous [32,35]. Therefore, Janetia wilsoniae cannot be adequately placed in any known species of Janetia and is described here as a new species. ...
A survey of foliicolous fungi associated with Dimorphandra wilsonii and Dimorphandra mollis (Fabaceae) was conducted in the state of Minas Gerais, Brazil. Dimorphandra wilsonii is a tree species native to the Brazilian Cerrado that is listed as critically endangered. Fungi strictly depending on this plant species may be on the verge of co-extinction. Here, results of the pioneering description of this mycobiota are provided to contribute to the neglected field of microfungi conservation. The mycobiota of D. mollis, which is a common species with a broad geographical distribution that co-occurs with D. wilsonii, was examined simultaneously to exclude fungal species occurring on both species from further consideration for conservation because microfungi associated with D. wilsonii should not be regarded as under threat of co-extinction. Fourteen ascomycete fungal species were collected, identified, described and illustrated namely: Byssogene wilsoniae sp. nov., Geastrumia polystigmatis, Janetia dimorphandra-mollis sp. nov., Janetia wilsoniae sp. nov., Johansonia chapadiensis, Microcalliopsis dipterygis, Phillipsiella atra, Piricauda paraguayensis, Pseudocercospora dimorphandrae sp. nov., Pseudocercosporella dimorphandrae sp. nov., Ramichloridiopsis wilsoniae sp. and gen. nov., Stomiopeltis suttoniae, Trichomatomyces byrsonimae and Vesiculohyphomyces cerradensis. Three fungi were exclusively found on D. wilsonii and were regarded as potentially threatened of extinction: B. wilsoniae, J. wilsoniae and R. wilsoniae.
... In L. canescens, conidiogenous cells are mono-or polyblastic, bearing a single or 2-3 denticulate conidiogenous loci per cell; therefore, despite the presence of distoseptate conidia, this fungus is not considered congeneric with Linkosia as presently circumscribed and is better retained in Janetia M.B. Ellis (Ellis 1976, Goh & Hyde 1996. ...
... In L. canescens, conidiogenous cells are mono-or polyblastic, bearing a single or 2-3 denticulate conidiogenous loci per cell; therefore, despite the presence of distoseptate conidia, this fungus is not considered congeneric with Linkosia as presently circumscribed and is better retained in Janetia M.B. Ellis (Ellis 1976, Goh & Hyde 1996. ...
Linkosia longirostrata sp. nov. is described and illustrated from rachides of dead leaves of Acoelorrhaphe wrightii collected in southeastern Florida, U.S.A. The fungus is distinct in having no or very reduced 1–2-septate conidiophores, smooth or slightly verrucose
determinate or occasionally percurrent conidiogenous cells, and narrowly obclavate to long obclavate rostrate finely roughened 9–18-distoseptate conidia with 0–2 dark brown constrictions and a long slender straight rostrum with 0–5 intercalary nodular swellings. Differences
and similarities with morphologically similar Linkosia species are discussed.
... (Sivanesan & Hsieh 1990). To date, 20 species have been described in the genus (Goh & Hyde 1996, Calduch et al. 2002, Xu & Guo 2002, Dornelo-Silva & Dianese 2003. Wu and Zhuang (2005) Goh & Hyde (1996) formalized an expanded generic concept of Janetia to include species producing monoblastic or polyblastic conidiogenous cells and euseptate or distoseptate conidia. ...
... To date, 20 species have been described in the genus (Goh & Hyde 1996, Calduch et al. 2002, Xu & Guo 2002, Dornelo-Silva & Dianese 2003. Wu and Zhuang (2005) Goh & Hyde (1996) formalized an expanded generic concept of Janetia to include species producing monoblastic or polyblastic conidiogenous cells and euseptate or distoseptate conidia. We do not agree with this broader generic concept of Janetia and we consider it more appropriate to transfer the species of Janetia with distoseptate conidia to Linkosia. ...
During a survey of conidial fungi carried out in aquatic and terrestrial habitats in the semi-arid Caatinga biome of Brazil, three new species were found on decaying plants. Anungitopsis caatingensis sp. nov. was found on decaying leaves collected in a terrestrial habitat. Codinaea pindobacuensis sp. nov. and Stanjehughesia clavata sp. nov. were found on decaying leaves and decaying bark collected in freshwater, respectively. Descriptions, illustrations and comments are presented, including a key to accepted species of Anungitopsis. Three species of Janetia are transferred to Linkosia and two species are proposed as synonyms: Minimelanolocus machili is synonymous with Cacumisporium pleuroconidiophorum and Janetia curviapicis is synonymous with Stanjehughesia hamatiella.
... The flask-shaped, flat-topped, determinate, black conidiogenous cells ("denticles") in species of Janetia M.B. Ellis (Ellis 1976;Goh and Hyde 1996) are also comparable with the conidiogenous cells of Yinmingella. In Janetia, the conidiogenous cells can be monoblastic or polyblastic and can be discrete or grouped, and the conidia are phragmosporous. ...
Yinmingella mitriformis gen. et sp.nov. (Hyphomycetes), occurring on wood submerged in Tung Chung River on Lantau Island, Hong Kong, is described and illustrated. It is unique in producing short, true chains of holoblastic, aseptate, smooth, black, mitriform conidia from dark brown, flask-shaped conidiogenous cells on hemispherical, black stromata. Yinmingella is compared with Hemibeltrania, Hemicorynespora, Mammaria, Janetia, Sporidesmium, and Stanjehughesia.Key words: cryo-SEM, dematiaceous Hyphomycetes, freshwater fungi, mitosporic fungi, systematics.
... Janetia, typified by J. euphorbiae, has conidiogenous cells with one to several truncate openings, and the conidia have a truncate base. The monograph of Janetia byGoh and Hyde (1996)treated 17 species, and emended the description of the genus. However, the 17 species treated all had denticulate conidiogenous cells and the conidia exhibited a conspicuous, exerted truncate base quite unlike the comparable structures of P. aurantiaca. ...
The anamorphic taxon Pyrigemmula aurantiaca gen. et sp. nov. is described and illustrated from specimens that were collected from the inner bark of living woody hosts
(Vitis vinifera, Pyrus communis, Mespilus germanica, Platanus hybrida, Elaeagnus angustifolia) and plant debris in Hungary. The fungus is generically distinct in the nature of the pyriform, golden conidiogenous cell
with a solitary terminal pore and the ellipsoidal, distoseptate, phragmoconidia that germinate from each end and that have
a rarely noted internal hilum quite unlike the hilum of the conidiogenous cell. The new fungus is compared with the type species
of a number of allied genera of hyphomycetes. Free spores of the fungus were trapped in air, honeydew sap and rainwater samples.
Aerobiological studies showed that the spores are infrequent in the air, whereas their concentration increased with higher
atmospheric pressure. Pyrigemmula aurantiaca lives in bark fissures and rarely becomes airborne and the spores are mainly dispersed by rain splash.
KeywordsBark–Corticolous–Dematiaceous hyphomycete–Dispersal–Honeydew sap
... In a continuing study of palm fungi in the tropics (Yanna et al 1997(Yanna et al , 1998a(Yanna et al , b, 1999(Yanna et al , 2000a(Yanna et al , b, 2002Hyde et al 2002), an undescribed dematiaceous mitosporic fungus was found on decaying fronds of Phoenix hanceana Naud., growing in grassland mountain areas in Hong Kong. The fungus is reminiscent of genera such as Janetia, Pithomyces and Trichocladium (Carmichael et al 1980, Goh andHyde 1996) in producing micronematous, mononematous conidiophores, and solitar y, holoblastic, dematiaceous, phragmosporous conidia. ...
... The conidiogenous events of Endosporoideus are similar to those of Janetia in the mode of proliferation. Both genera form conidiogenous loci successively at the same level without elongation of the conidiogenous cells (Goh and Hyde 1996). ...
... Comparison of Endosporoideus with similar genera.-Endosporoideus is morphologically most similar to Trichocladium, whose species produce solitary, oval to clavate, euseptate, pigmented phragmosporous conidia from micronematous, mononematous conidiophores in effuse colonies. Trichocladium recently was reviewed by Goh and Hyde (1999) who accepted 18 species. Trichocladium melhae since has been described from marine habitat ( Jones et al 2001). ...
Endosporoideus pedicellata gen. et sp. nov. is described and illustrated from decaying petioles of Phoenix hanceana collected from grassland in Tai Mo Shan, Hong Kong. The genus is unique in producing solitary, phragmosporous conidia. The conidia comprise a brown to dark brown inner-wall layer and thick, hyaline outer-wall layer and are produced holoblastically from determinate conidiogenous cells on micronematous, mononematous conidiophores. Cells of conidia may disarticulate at the septa. Representative steps in conidiogenesis of E. pedicellata are illustrated with light micrographs, and details of the conidiogenous events are interpreted schematically.
... In a continuing study of palm fungi in the tropics (Yanna et al 1997(Yanna et al , 1998a(Yanna et al , b, 1999(Yanna et al , 2000a(Yanna et al , b, 2002Hyde et al 2002), an undescribed dematiaceous mitosporic fungus was found on decaying fronds of Phoenix hanceana Naud., growing in grassland mountain areas in Hong Kong. The fungus is reminiscent of genera such as Janetia, Pithomyces and Trichocladium (Carmichael et al 1980, Goh andHyde 1996) in producing micronematous, mononematous conidiophores, and solitar y, holoblastic, dematiaceous, phragmosporous conidia. ...
... The conidiogenous events of Endosporoideus are similar to those of Janetia in the mode of proliferation. Both genera form conidiogenous loci successively at the same level without elongation of the conidiogenous cells (Goh and Hyde 1996). ...
... Comparison of Endosporoideus with similar genera.-Endosporoideus is morphologically most similar to Trichocladium, whose species produce solitary, oval to clavate, euseptate, pigmented phragmosporous conidia from micronematous, mononematous conidiophores in effuse colonies. Trichocladium recently was reviewed by Goh and Hyde (1999) who accepted 18 species. Trichocladium melhae since has been described from marine habitat ( Jones et al 2001). ...
Endosporoideus pedicellata gen. et sp, nov. is described and illustrated from decaying petioles of Phoenix hanceana collected from grassland in Tai Mo Shan, Hong Kong. The genus is unique in producing solitary, phragmosporous conidia. The conidia comprise a brown to dark brown inner-wall layer and thick, hyaline outer-wall layer and are produced holoblastically from determinate conidiogenous cells on micronematous, mononematous conidiophores. Cells of conidia may disarticulate at the septa. Representative steps in conidiogenesis of E. pedicellata are illustrated with light micrographs, and details of the conidiogenous events are interpreted schematically.
