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![FIGURE. Amauroderma floriformum (URM 83250) A. Basidioma. B. Basidiospores in Melzer's reagent. C, D. Basidiospores in KOH. Scale: A = 1 cm; B-D = 10 μm. Photos: T.B. Gibertoni. Amauroderma intermedium (Bres. & Pat.) Torrend, Brotéria Série Botânica 18: 128 (1920) ≡ Ganoderma intermedium Bres. & Pat., Bulletin de la Société Mycologique de France 5: 76 (1889) Description:-Furtado (1981, as A. rude var. intermedium J.S. Furtado 1968: 251), Ryvarden (2004a). Substrate:-on soil. Distribution:-Brazil, Colombia, Guadalupe, Martinique, Paraguay and Puerto Rico. Specimens examined:-BRAZIL. Pará: Melgaço, Estação Científica Ferreira Penna, February 2007, T.B. Gibertoni w/n (URM 79319, URM 79320, URM 79321, URM 79322, URM 79323, URM 79324); February 2008, T.B. Gibertoni et al. w/n (URM 79318). Rondônia: Porto Velho, Estação Ecológica de Cuniã, February 2008, A.C. GomesSilva w/n (URM 79456, URM 79457), February 2011, A.C. Gomes-Silva et al. 372 (URM 83577), A.C. Gomes-Silva & T.B. Gibertoni 47 (URM 83884), Fazenda Mucuim, July 2007, A.C. Gomes-Silva w/n (URM 79163), Parque Natural Municipal de Porto Velho, February 2008, A.C. Gomes-Silva w/n (URM 79458), June 2011, A.C. Gomes-Silva et al. 448 (URM 83569). Roraima, July 1974, G.T. Prance et al. w/n (INPA 45354, as A. schomburgkii). Additional specimen examined:-AUSTRALIA: Tasmania, w/d, Gunn w/n [BPI 237189, type of A. rude (Berk.) Torrend (1920: 18)]. Remarks:-Amauroderma intermedium is characterized by the dark brown to black pileus, context with two black lines and subglobose, finely ornamented basidiospores (9-11 × 7-9 μm). This species is currently considered a synonym of A. rude; however, based on the analysis of the type of A. rude, on the characteristics described by Furtado (1981) and on geographic distribution, we preferred to keep these two taxa as distinct species.](profile/Tatiana-Gibertoni/publication/279914244/figure/fig5/AS:614082809966592@1523420159140/FIGURE-Amauroderma-floriformum-URM-83250-A-Basidioma-B-Basidiospores-in-Melzers.png)
FIGURE. Amauroderma floriformum (URM 83250) A. Basidioma. B. Basidiospores in Melzer's reagent. C, D. Basidiospores in KOH. Scale: A = 1 cm; B-D = 10 μm. Photos: T.B. Gibertoni. Amauroderma intermedium (Bres. & Pat.) Torrend, Brotéria Série Botânica 18: 128 (1920) ≡ Ganoderma intermedium Bres. & Pat., Bulletin de la Société Mycologique de France 5: 76 (1889) Description:-Furtado (1981, as A. rude var. intermedium J.S. Furtado 1968: 251), Ryvarden (2004a). Substrate:-on soil. Distribution:-Brazil, Colombia, Guadalupe, Martinique, Paraguay and Puerto Rico. Specimens examined:-BRAZIL. Pará: Melgaço, Estação Científica Ferreira Penna, February 2007, T.B. Gibertoni w/n (URM 79319, URM 79320, URM 79321, URM 79322, URM 79323, URM 79324); February 2008, T.B. Gibertoni et al. w/n (URM 79318). Rondônia: Porto Velho, Estação Ecológica de Cuniã, February 2008, A.C. GomesSilva w/n (URM 79456, URM 79457), February 2011, A.C. Gomes-Silva et al. 372 (URM 83577), A.C. Gomes-Silva & T.B. Gibertoni 47 (URM 83884), Fazenda Mucuim, July 2007, A.C. Gomes-Silva w/n (URM 79163), Parque Natural Municipal de Porto Velho, February 2008, A.C. Gomes-Silva w/n (URM 79458), June 2011, A.C. Gomes-Silva et al. 448 (URM 83569). Roraima, July 1974, G.T. Prance et al. w/n (INPA 45354, as A. schomburgkii). Additional specimen examined:-AUSTRALIA: Tasmania, w/d, Gunn w/n [BPI 237189, type of A. rude (Berk.) Torrend (1920: 18)]. Remarks:-Amauroderma intermedium is characterized by the dark brown to black pileus, context with two black lines and subglobose, finely ornamented basidiospores (9-11 × 7-9 μm). This species is currently considered a synonym of A. rude; however, based on the analysis of the type of A. rude, on the characteristics described by Furtado (1981) and on geographic distribution, we preferred to keep these two taxa as distinct species.
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From 2007 to 2014, specimens of Amauroderma were collected mostly in North and Northeast Brazil. Additionally, material deposited in herbaria was reviewed. The analysed specimens represented 20 species, six of them new to science: Amauroderma albostipitatum, A. floriformum, A. laccatostipitatum, A. ovisporum, A. sessile and A. subsessile. Twelve sp...
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Citations
... Eleven species of Amauroderma found in the study area occur in the Amazon domain (Gomes-Silva et al., 2015), being the first report of A. aurantiacum for Pará state. Inflatostereum glabrum, Cymatoderma caperatum and Stereopsis hiscens also occur in the Amazon domain (Reid, 1965), but had not been registered in Pará yet. ...
We present an inventory of polypore fungi (Basidiomycota; Hymenochaetales and Polyporales) with the aim of knowing the diversity of an area of 8 km2 of Brazilian Amazon rainforest, in the surroundings of HPP Sílvio Braga, in the west of Pará, where 91 species were collected (545 specimens), with 16 of these new records for the state of Pará, and 1 for America. These numbers tend to increase, given the projected occurrence of 118 species for the area. 87 species were considered occasional or rare, with only four considered frequent and none abundant. The richness observed in the study area was similar to other conservation units in the Amazon, for example, Caxiuanã National Forest (74 species). This observation, added to the potential increase in the number of species, the number of species with low representativeness (relative frequency) and the number of new records for the state, demonstrate the need to expand studies on polypore fungi in the region to learn about their biodiversity and the need for conservation of that area.
... Ongoing taxonomic studies of Ganodermataceae from Asia, Africa, Europe, Neotropics and North America have been conducted for a long time with many new species and combinations continually being reported (Otieno 1968, Steyaert 1972, Moncalvo & Ryvarden 1997, Ryvarden 2004a, b, Gibertoni et al. 2008, Le et al. 2012, Coetzee et al. 2015, Gomes-Silva et al. 2015, Hapuarachchi et al. 2019b, Sun et al. 2020, Costa-Rezende et al. 2020b). China has a complex and diverse natural environment resulting in high species richness, and a total of 130 species of Ganodermataceae have been reported (Zhao & Zhang 2000, Dai 2012, Cao & Yuan 2012, Zhou et al. 2015, Hapuarachchi et al. 2018b, Xing et al. 2018, Ye et al. 2019, Sun et al. 2020. ...
... Moncalvo (1995) used ITS sequences and the D2 region of nLSU sequences to construct the relationships among species in Ganoderma, and concluded that the combined data is useful for intrageneric segregation while the D2 region is suitable for intergeneric or higher ranks segregation. Subsequently, ITS and nLSU sequences were often used to identify species , Le et al. 2012, de Lima Júnior et al. 2014, Gomes-Silva et al. 2015. It is worth mentioning that Fryssouli et al. (2020) carried out a phylogenetic study of Ganoderma based only on 3 970 ITS sequences obtained from the GenBank/ENA/DDBJ database which evaluated the accuracy of sequences and showed that Ganoderma can be divided into five main lineages. ...
... Besides these species, this genus contains 40 taxa which have been recorded from Africa, Southeast Asia and Central America, and the sequences of these taxa are not available. Until now, 58 species (Table 2) can be recognised in Amauroderma based on previous literature (Furtado 1967b, Steyaert 1972, Corner 1983, Henao-M 1997, Moncalvo & Ryvarden 1997, Gulaid & Ryvarden 1998, Aime et al. 2003, Ryvarden 2004b, Gomes-Silva et al. 2015, Ryvarden 2020 Notes: Amaurodermellus was established by Costa-Rezende et al. (2020b) with type species, Amaurodermellus ovisporum. It can be distinguished from the other genera in Ganodermataceae by ovoid basidiospores with inconspicuous spinules on the endospore wall. ...
Ganodermataceae is one of the main families of macrofungi since species in the family are both ecologically and economically important. The double-walled basidiospores with ornamented endospore walls are the characteristic features of Ganodermataceae . It is a large and complex family; although many studies have focused on Ganodermataceae , the global diversity, geographic distribution, taxonomy and molecular phylogeny of Ganodermataceae still remained incompletely understood. In this work, taxonomic and phylogenetic studies on worldwide species of Ganodermataceae were carried out by morphological examination and molecular phylogenetic analyses inferred from six gene loci including the internal transcribed spacer regions (ITS), the large subunit of nuclear ribosomal RNA gene (nLSU), the second largest subunit of RNA polymerase II gene ( rpb2 ), the translation elongation factor 1-α gene ( tef1 ), the small subunit mitochondrial rRNA gene (mtSSU) and the small subunit nuclear ribosomal RNA gene (nSSU). A total of 1 382 sequences were used in the phylogenetic analyses, of which 817 were newly generated, including 132 sequences of ITS, 139 sequences of nLSU, 83 sequences of rpb2 , 124 sequences of tef1 , 150 sequences of mtSSU and 189 sequences of nSSU. The combined six-gene dataset included sequences from 391 specimens representing 146 taxa from Ganodermataceae . Based on morphological and phylogenetic analyses, 14 genera were confirmed in Ganodermataceae : Amauroderma , Amaurodermellus , Cristataspora , Foraminispora , Furtadoella , Ganoderma , Haddowia , Humphreya , Magoderna , Neoganoderma , Sanguinoderma , Sinoganoderma , Tomophagus and Trachydermella . Among these genera, Neoganoderma gen. nov. is proposed for Ganoderma neurosporum ; Sinoganoderma gen. nov. is proposed for Ganoderma shandongense ; Furtadoella gen. nov. is proposed to include taxa previously belonging to Furtadoa since Furtadoa is a homonym of a plant genus in the Araceae ; Trachydermella gen. nov. is proposed to include Trachyderma tsunodae since Trachyderma is a homonym of a lichen genus in the Pannariaceae . Twenty-three new species, viz., Ganoderma acaciicola , G. acontextum , G. alpinum , G. bubalinomarginatum , G. castaneum , G. chuxiongense , G. cocoicola , G. fallax , G. guangxiense , G. puerense , G. subangustisporum , G. subellipsoideum , G. subflexipes , G. sublobatum , G. tongshanense , G. yunlingense , Haddowia macropora , Sanguinoderma guangdongense , Sa. infundibulare , Sa. longistipitum , Sa. melanocarpum , Sa. microsporum and Sa. tricolor are described. In addition, another 33 known species are also described in detail for comparison. Scanning electron micrographs of basidiospores of 10 genera in Ganodermataceae are provided. A key to the accepted genera of Ganodermataceae and keys to the accepted species of Ganoderma , Haddowia , Humphreya , Magoderna , Sanguinoderma and Tomophagus are also provided. In total, 278 species are accepted as members of Ganodermataceae including 59 species distributed in China.
... Notes: the species when fresh, has a typical bright reddish-brown color that characterizes it. According to Gomes-Silva et al. (2015) the species resembles A. elegantissimum Ryvarden & Iturr. differing in the morphology of the basidiospore, since A. elegantissimum has globose, not ornamented basidiospores, with 7-10 μm. ...
Additions to the knowledge of Ganodermataceae in brazilian Cerrado). As a cosmopolitan family, Ganodermataceae has as distinctive characteristic the presence of double-walled basidiospore: the inner wall thick and ornamented, and the outer wall smooth. Even with the increasing interest in this family, the species are still poorly known in different regions of the brazilian territory, such as in the central Brazil. This study presents new distribution remarks of Ganodermataceae species in different sites of the biome Cerrado, in the Midwest region. We found 23 specimens from five species which are distributed into three genera, Amauroderma, Foraminispora and Ganoderma. From those species, one is a new record for the Cerrado (A. exile), four are new for the State of Goiás A. exile, F. rugosa, G. multiplicatum and G. stipitatum and one for the Distrito Federal (G. stipitatum). Amauroderma aurantiacum is rediscovered in Goiás after 88 years. This study contributes to improving the knowledge regarding the geographic distribution of these taxa in Brazil.
... Even though there has been progress towards a more natural classification of the group, there are still clades with uncertain generic position such as 'Ganoderma coffeatum' clade (Gomes-Silva et al. 2015;Costa-Rezende et al. 2016;Song et al. 2016;Costa-Rezende et al. 2017). Furthermore, several species with morphological traits that diverge from the genera as currently circumscribed have not been evaluated in a phylogenetic contextually studied, for example, Amauroderma ovisporum, A. deviatum, and G. neurosporum, which present spore morphology differing from other species in respective genera (Ryvarden 2004;Gomes-Silva et al. 2015;Costa-Rezende et al. 2017). ...
... Even though there has been progress towards a more natural classification of the group, there are still clades with uncertain generic position such as 'Ganoderma coffeatum' clade (Gomes-Silva et al. 2015;Costa-Rezende et al. 2016;Song et al. 2016;Costa-Rezende et al. 2017). Furthermore, several species with morphological traits that diverge from the genera as currently circumscribed have not been evaluated in a phylogenetic contextually studied, for example, Amauroderma ovisporum, A. deviatum, and G. neurosporum, which present spore morphology differing from other species in respective genera (Ryvarden 2004;Gomes-Silva et al. 2015;Costa-Rezende et al. 2017). ...
... Habitat and distribution: Emerging from soil, probably associated with buried roots, and is restricted to the Neotropical region in Cerrado (Mato Grosso, this work) and Amazon (Pará and Rondonia) biomes in Brazil (Gomes-Silva et al. 2015). ...
Polypores with complex double-walled basidiospores with a pigmented endosporium ornamented with columns or ridges and a smooth hyaline exosporium are usually classified in the Ganodermataceae. Although the family presents well-delimited morphological features, recent phylogenetic studies have raised divergent evidences about its monophyly. In order to clarify uncertainties of generic delimitation and classification of the group and test its monophyly, morphological analysis and multilocus phylogenetic analyses based on Internal Transcribed Spacer, nuclear 28S rDNA, and portions of the largest subunit of RNA polymerase II and translation elongation factor 1-alpha were carried out. The main outcomes of the study are (i) Ganodermataceae is recovered as monophyletic, (ii) Amaurodermellus is proposed to accommodate the neotropical Amauroderma ovisporum, (iii) Cristataspora is proposed to accommodate two former species of Ganoderma—G. coffeatum and G. flaviporum—with pale context and truncate basidiospores with endosporic ornamentation as ridges. Comments on other species of Ganodermataceae are also presented.
... Notes: the species when fresh, has a typical bright reddish-brown color that characterizes it. According to Gomes-Silva et al. (2015) the species resembles A. elegantissimum Ryvarden & Iturr. differing in the morphology of the basidiospore, since A. elegantissimum has globose, not ornamented basidiospores, with 7-10 μm. ...
... Amauroderma Murrill s.lat. is a group of polypore fungi that has been the focus of recent studies with morphological and phylogenetic approaches with the publication of new taxa and changes in its classification and circumscription. Currently, the group comprises three described genera (Amauroderma s.str., Furtadoa Costa-Rezende, Robledo & Drechsler-Santos and Foraminispora Robledo, Costa-Rezende & Drechsler-Santos) plus additional lineages that probably represent undescribed taxa (Gomes-Silva et al. 2015, Costa-Rezende et al. 2016, Song et al. 2016, Costa-Rezende et al. 2017. Amauroderma s.str. ...
... In this new circumscription, there are 16 species that have been phylogenetically tested that belong to Amauroderma s.str. However, 24 Amauroderma taxa are reported for the neotropics (Furtado 1981, Ryvarden 2004, Gomes-Silva et al. 2015, Costa-Rezende et al. 2016. Among the specimens that have been phylogenetically tested, Costa-Rezende et al. (2016, 2017 presented a terminal clade composed of two specimens, one of them identified as A. praetervisum (Pat.) ...
... Therefore, we decided to carefully examine and compare those specimens in order to clarify A. praetervisum species concept. The topology presented in this work recovered the same main clades already shown in previous phylogenies of Ganodermataceae (Gomes-Silva et al. 2015;Costa-Rezende et al. 2016, 2017Song et al. 2016). Among those clades, Amauroderma s.str. is well supported (0.97 BPP), being composed of a homogeneous assemblage of species. ...
Amauroderma s.str. is a genus of polypores with neotropical distribution characterized mainly by species with nontruncated double-walled spores with solid columnar to semireticulate endosporic ornamentation. As a continuation of a study on the taxonomy of the genus in Brazil, specimens with dubious delimitation due to uncertain phylogenetic placement in previous works were carefully examined. A new species, Amauroderma robledoi, from the Brazilian Atlantic Forest is described based on morphological and phylogenetic evidence. It is characterized by the combination of a concentrically zonated reddish brown pilear surface, whitish stipe with grayish transversal bands, and subglobose to broadly ellipsoid ([10.5] 11–12 [12.5] × 9–11 µm), pale yellowish, double-walled basidiospores.
... This species later was selected by Steyaert (1972) Steyaert and M. vansteenisii Steyaert. The separation of these species in generic level was questioned by certain authors (e.g., Corner, 1983;Teixeira, 1992;Ryvarden, 1991;Moncalvo and Ryvarden, 1997), although the sequences of M. subresinosum (as Amauroderma subresinosum) forms a distinct lineage from other ganodermatoid genera (e.g., Gomes-Silva et al., 2015;Costa-Rezende et al., 2017). Based on the ornamentation of the basidiospores, Steyaert (1972) proposed two further stipitate ganodermatoid genera: Haddowia and Humphreya. ...
... The tropical (or subtropical) genus Amauroderma Murrill traditionally circumscribed mainly by the globose to ellipsoid basidiospores, without a truncate apex (Ryvarden, 2004). However, the recent studies using molecular phylogenetic methods have shown that the genus is polyphyletic and will need to be revised (Gomes-Silva et al., 2015;Song et al., 2016;Costa-Rezende et al., 2017). The genus Polyporopsis Audet was discussed by Richter et al. (2015) in Ganodermataceae. ...
The white-rot polypore genera Ganoderma (Polyporales, Basidiomycota) has a global distribution and includes several economically important species. However, Ganoderma taxonomically is one of the most difficult and misunderstood genera among the polypores, and the species names are often misused, especially in applied mycological studies. Therefore, in this contribution the following topics have been rewieved: (i) systematic state of Ganoderma genus and its relative genera; (ii) possibilities of species separation; (iii) current taxonomical state and biogeography of the most important Ganoderma species (e.g., G. applanatum, G. boninense, G. lucidum, G. lingzhi, G. sinense and G. tsugae) based on the light of most recent research results.
... forming a monophyletic clade and some Amauroderma species defined in its broad morphological sense grouped out of Amauroderma s.str. (Gomes-Silva et al. 2015, Costa-Rezende et al. 2016. Although several molecular phylogenetic studies have been published on Ganoderma and Amauroderma, no synthesis of molecular data has been presented with a phylogenetic overview in context of Ganodermataceae. ...
... Ecology & Distribution -Specimens growing on the ground or on decayed angiosperm wood from Brazil, Guyana and Venezuela (Ryvarden 2004, Coelho et al. 2007, Gomes-Silva et al. 2015. ...
... Amauroderma corneri was proposed fifteen years later to accommodate another monomitic species with Amauroderma-like basidiospores, based on a specimen from Atlantic Rain Forest in Brazil (Gulaid & Ryvarden 1998). However, the species was later considered under synonymy of A. brasiliense (Ryvarden 2004, Coelho et al. 2007, Gomes-Silva et al. 2015. In accordance with the morphological differences reported, i.e., A. corneri has a thin and funnel-to fan-shaped pileus, whitish when fresh, turning orange to brown when dried and A. brasiliense presents a thick and permanently pale basidiomata (Gomes-Silva et al. 2015), we preferred to maintain both taxa as independent species. ...
Ganodermataceae is a remarkable group of polypore fungi, mainly characterized by particular doublewalled
basidiospores with a coloured endosporium ornamented with columns or crests, and a hyaline smooth
exosporium. In order to establish an integrative morphological and molecular phylogenetic approach to clarify
relationship of Neotropical Amauroderma s.lat. within the Ganodermataceae family, morphological analyses, including
scanning electron microscopy, as well as a molecular phylogenetic approach based on one (ITS) and four
loci (ITS-5.8S, LSU, TEF-1α and RPB1), were carried out. Ultrastructural analyses raised up a new character for
Ganodermataceae systematics, i.e., the presence of perforation in the exosporium with holes that are connected with
hollow columns of the endosporium. This character is considered as a synapomorphy in Foraminispora, a new genus
proposed here to accommodate Porothelium rugosum (≡ Amauroderma sprucei). Furtadoa is proposed to accommodate
species with monomitic context: F. biseptata, F. brasiliensis and F. corneri. Molecular phylogenetic analyses
confirm that both genera grouped as strongly supported distinct lineages out of the Amauroderma s.str. clade.
... Torrend (1920: 140). It is a widespread genus, traditionally characterized by stipitate, occasionally sessile basidiomata with a variably laccate or dull pileus, a trimitic hyphal system and ellipsoid, subglobose to globose bitunicate basidiospores with a smooth, semi-reticulate, honeycomb or asperulate to verrucose inner wall (Furtado 1981, Ryvarden 2004, Gomes-Silva et al. 2015, Li & Yuan 2015. Basidiomata typically emerge from the ground and the mycelial phase is connected to the roots of living or dead trees (although some species emerge from the trunk also), causing a white rot (Ryvarden 2004). ...
... Recent papers (Gomes-Silva et al. 2015, Costa-Rezende et al. 2016 provided comprehensive morphological and phylogenetic analyses on Amauroderma in Brazil. These papers included geographical and morphological discussion of Amauroderma sensu stricto and pointed out that Amauroderma is a non-monophyletic taxon. ...
... Recently, several phylogenetic studies have focused on Amauroderma, and species of Amauroderma were included in different clades (Gomes-Silva et al. 2015, Costa-Rezende et al. 2016. Our phylogenetic analyses, based on both ITS and ITS+28S sequences, confirmed that Amauroderma is polyphyletic and is clustered with genera in the Ganodermataceae. ...
The phylogeny of Amauroderma and related genera were studied using DNA sequences from the internal transcribed spacer (ITS) and 28S nuclear ribosomal RNA gene regions. Amauroderma concentricum sp. nov. is described. The species is characterized by the yellowish brown to reddish brown pileal surface with concentric zones, a white pore surface unchanged when bruised, single to multiple stipes, small pores (4–5 per mm), and subglobose to globose and double-walled basidiospores, 8–9.2 × 7.2–8 μm. The phylogenetic analysis presented here confirmed that Amauroderma as traditionally accepted is not monophyletic.
... There have been several taxonomic studies on Brazilian species of Amauroderma over the past 10 years (Coelho et al. 2007, Gibertoni et al. 2008, Campacci & Gugliotta 2009, Gomes-Silva et al. 2010, Gomes-Silva & Gibertoni 2012, Campos-Santana & Loguercio-Leite 2013. Gomes-Silva et al. (2015) presented the genus as non-monophyletic and produced a clade composed of Brazilian specimens including specimens of A. schomburgkii [= Fomes regulicolor Berk. ex Cooke (1886: 21)], the type species of the genus, which might be interpreted as Amauroderma stricto sensu, while the remaining clades may represent new genera. ...
... Sequences of nrITS and nrLSU of Ganodermataceae and outgroups [Perenniporiella chaquenia Robledo & Decock (2009: 662), Pe. pendula Decock & Ryvarden (2003: 99)] were retrieved from GenBank (NCBI) and combined with the new sequences to construct two datasets, one composed only of nrITS sequences and the other combining nrITS+ nrLSU sequences. In order to corroborate the delimitation of the new species proposed here in the combined dataset, and due to the lack of sequences from the same collection, sequences of A. exile and A. partitum from different vouchers (but from the same locality) studied by Gomes-Silva et al. (2015) were used in the analyses. The datasets were aligned using MAFFT v.7 (Katoh & Standley, 2013), under the G-INS-1 criteria, then manually inspected using MEGA v.6 (Tamura et al. 2013). ...
... On the other hand, Coelho et al. (2007) considered it monomitic to probably dimitic, with long and thick-walled contextual hyphae sometimes resembling skeletal hyphae, with basal clamps. Gomes-Silva et al. (2015) pointed out that the species possesses rare skeletal hyphae, and wide, conspicuously clamped generative hyphae. The dendrohyphidia, gloeoporus hyphae and gloeocystidia mentioned by Coelho et al. (2007) were not observed by us, probably due to the fact that this kind of structure often collapses during drying. ...
During a polypore survey in the Cerrado (Mato Grosso state, Brazil), Amauroderma specimens were collected and some of them deserved special taxonomic attention due to their intermediate morphology between A. calcigenum and A. partitum. A comparative study of the types and reference material, as well as phylogenetic analysis, led us to conclude that these speci- mens represent an undescribed species, presented here as Amauroderma calcitum. In addition A. brasiliense is presented as a new record for the Brazilian Cerrado. Illustrations, taxonomic analyses and a discussion are presented for each taxon, and a key to the Amauroderma species from Brazil is provided. A phylogenetic discussion about the genus is also presented.
