FIGURE 2 - uploaded by Ke Wang
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ITS-nrDNA phylogeny based on Maximum Parsimony and Bayesian. Bootstrap value (≥ 50%) and posterior probabilities (≥ 0.70) are labeled above branches and separated by "/". Mycena species are used to root the tree. The sequence from the new species is in bold.
Source publication
During field expeditions to the Tibetan Plateau, a collection of an undescribed species with several basidiomes was found. Morphological observation and DNA sequence analyses of the collection revealed a close relationship with Cleistocybe vernalis, the type species of the genus Cleistocybe. Therefore, a new species is proposed for the fungus with...
Contexts in source publication
Context 1
... the ITS tree, but differed in the grouping of Cleistocybe sequences with Catathelasma sequences rather than with those of Callistosporium, Clitocybe and Macrocybe as in the latter. Further, although the sequence of KY622014 from HMAS 0276619 was grouped with Cleistocybe species supported by 100% of both bootstrap value and posterior probability (Fig. 3), it became sister to the C. carneogrisea and C. vernalis terminal clade instead of the closer grouping with C. vernalis as in the ITS ...
Context 2
... clitocyboid habitat, decurrent gills and 97% similarity of ITS sequences by Blast search. However, phylogenetic analyses of the ITS sequences demonstrated that C. vernaloides and C. vernalis are segregated in two terminal clades (Fig. 2). The molecular distinction of the two species is also supported by the analysis of LSU sequences as shown in Fig. 3. Further, the morphological differentiation of C. vernaloides from C. vernalis was revealed by detailed observation. The former is characterized by smaller basidiomata and broader basidiospores. To facilitate the species identification, a key to the known species of Cleistocybe based on morphological characters and occurring seasons is ...
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Citations
... They can be found in Europe, Asia, North and Central America. Bonomyces was recently monographed by Alvarado et al. (2018b), Cleistocybe by Ammirati et al. (2007) and Wu et al. (2018), and Catathelasma by Vizzini et al. (2020a). Recently, the newly discovered species Bonomyces squamulosus, B. pseudoarnoldii and Cleistocybe vernaloides have been described from China (Wu et al. 2018, He & Yang 2022, Mao et al. 2022. ...
... Bonomyces was recently monographed by Alvarado et al. (2018b), Cleistocybe by Ammirati et al. (2007) and Wu et al. (2018), and Catathelasma by Vizzini et al. (2020a). Recently, the newly discovered species Bonomyces squamulosus, B. pseudoarnoldii and Cleistocybe vernaloides have been described from China (Wu et al. 2018, He & Yang 2022, Mao et al. 2022. ...
The phylogenetic position of several clitocyboid/pleurotoid/tricholomatoid genera previously considered incertae sedis is here resolved using an updated 6-gene dataset of Agaricales including newly sequenced lineages and more complete data from those already analyzed before. Results allowed to infer new phylogenetic relationships, and propose taxonomic novelties to accommodate them, including up to ten new families and a new suborder. Giacomia (for which a new species from China is here described) forms a monophyletic clade with Melanoleuca (Melanoleucaceae) nested inside suborder Pluteineae, together with the families Pluteaceae, Amanitaceae (including Leucocortinarius), Limnoperdaceae and Volvariellaceae. The recently described family Asproinocybaceae is shown to be a later synonym of Lyophyllaceae (which includes also Omphaliaster and Trichocybe) within suborder Tricholomatineae. The families Biannulariaceae, Callistosporiaceae, Clitocybaceae, Fayodiaceae, Macrocystidiaceae (which includes Pseudoclitopilus), Entolomataceae, Pseudoclitocybaceae (which includes Aspropaxillus), Omphalinaceae (Infundibulicybe and Omphalina) and the new families Paralepistaceae and Pseudoomphalinaceae belong also to Tricholomatineae. The delimitation of the suborder Pleurotineae (= Schizophyllineae) is discussed and revised, accepting five distinct families within it, viz. Pleurotaceae, Cyphellopsidaceae, Fistulinaceae, Resupinataceae and Schizophyllaceae. The recently proposed suborder Phyllotopsidineae (= Sarcomyxineae) is found to encompass the families Aphroditeolaceae, Pterulaceae, Phyllotopsidaceae, Radulomycetaceae, Sarcomyxaceae (which includes Tectella), and Stephanosporaceae, all of them unrelated to Pleurotaceae (suborder Pleurotineae) or Typhulaceae (suborder Typhulineae). The new family Xeromphalinaceae, encompassing the genera Xeromphalina and Heimiomyces, is proposed within Marasmiineae. The suborder Hygrophorineae is here reorganized into the families Hygrophoraceae, Cantharellulaceae, Cuphophyllaceae, Hygrocybaceae and Lichenomphaliaceae, to homogenize the taxonomic rank of the main clades inside all suborders of Agaricales. Finally, the genus Hygrophorocybe is shown to represent a distinct clade inside Cuphophyllaceae, and the new combination H. carolinensis is proposed.
... It is therefore proposed to employ the name Biannulariaceae for this clade. This new concept of the Biannulariaceae is much more homogeneous because of a number of shared morphological features: dry, often cracking pileus surface, the presence of a partial veil (simple in Cleistocybe, double in Catathelasma, reduced to a pseudo-annular granulose zone in Bonomyces), decurrent lamellae, confluent pileus and stipe, firm context, and growth on soil (mainly under ectomycorrhizal Pinaceae), divergent hymenophoral trama, stipititrama formed by densely arranged slender hyphae which give a dry and fibrous consistency, presence of clamp connections, and a farinaceous smell Alvarado et al. 2018b;Wu et al. 2018). Catathelasma differs from Bonomyces and Cleistocybe because of its amyloid and cyanophilous spores and the double annulus, while Bonomyces species differ from Cleistocybe species because of the salmon to reddish pigment (absent in Cleistocybe), the white to pale, or at most yellow lamellae (pinkish gray to vinaceous buff in Cleistocybe), the non-rooting stipe, and the ellipsoid spores with obtuse base (amygdaliform to fusiform with acute base in Cleistocybe) (Alvarado et al. 2018b). ...
... Bonomyces basidiomata are usually terrestrial and often occur close to ectomycorrhizal plants (Pinaceae), but it has not been confirmed if they are ectomycorrhizal or saprotrophic, whereas Catathelasma is surely ectomycorrhizal (Hutchison 1992;Rinaldi et al. 2008;Tedersoo et al. 2010;Tedersoo and Smith 2013) and Cleistocybe is supposed to be saprotrophic (Sánchez-García and Matheny 2017). According to the last statement, the recently described species Cleistocybe vernaloides H.M. Wu, J.Q. Luo, Ke Wang & Y.J. Yao seems to be strictly associated with Platycladus orientalis (Cupressaceae) (Wu et al. 2018), a plant that is considered endomycorrhizal (Smith and Read 2008). ...
A new classification of the taxa formerly ascribed to Biannulariaceae (≡ Catathelasmataceae), viz. Catathelasma (type), Callistosporium, Pleurocollybia, Macrocybe, Pseudolaccaria, Guyanagarika and Anupama is here proposed. Phylogenetic inference of the Tricholomatineae based on the analysis of a combined dataset of nuclear genes including ITS, 18S and 28S rDNA, tef1 and rpb2 data supports significantly a monophyletic origin of the aforementioned genera with the exception of Catathelasma, which is significantly related with Bonomyces and Cleistocybe. Biannulariaceae is therefore emended to include the clade formed by Catathelasma, Bonomyces and Cleistocybe. Consequently, the new family Callistosporiaceae is proposed to name the clade containing Callistosporium (= Pleurocollybia) and related genera. Species of Callistosporium with distant lamellae, long hygrophoroid basidia and large amygdaliform spores are accommodated in the new genus Xerophorus. Finally, the new species Callistosporium pseudofelleum and Macrocybe sardoa are described, Clitocybe hesleri and C. fellea are combined into Callistosporium and Pseudolaccaria, respectively, and Callistosporium olivascens var. donadinii is upgraded to species rank and combined into Xerophorus.
