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Author: search.filters.author.Hyde, Kevin D.Subject: search.filters.subject.Basidiomycota

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    Item type:Publication,
    Taxonomy and phylogeny of hyaline-spored coelomycetes
    (2020-01-01)
    Li, Wen Jing
    ;
    McKenzie, Eric H.C.
    ;
    Liu, Jian Kui (Jack)
    ;
    Bhat, D. Jayarama
    ;
    Dai, Dong Qin
    Coelomycete is a general term used for asexual fungi which produce conidia in fruiting bodies: pycnidial, acervular, cupulate, pycnothyria or stromatic conidiomata. The group contains numerous plant pathogenic, saprobic and endophytic species associated with a wide range of hosts. Traditionally, morphological characters and host associations have been used as criteria to identify and classify coelomycetes, and this has resulted in a poor understanding of their generic and species boundaries. DNA based taxonomic studies have provided a better outlook of the phylogenetic and evolutionary trends in coelomycetes. However, the present outcomes represent only a preliminary step towards the understanding of coelomycetes. Many genera have not been revisited since they were first described. The present study revises the classification of the hyaline-spored coelomycetes and provides a modern taxonomic framework based on both morphology and phylogeny. In total, 248 genera were investigated, of which less than 100 are known to have sequence data. Multi-locus sequence data analyses of 28S nrDNA, 18S nrDNA, ITS, RNA polymerase II second largest subunit (rpb2), and part of the translation elongation factor 1-alpha gene (tef1) and β-tubulin (tub2) gene regions were analysed. As a result, three new genera and 23 new species are introduced. In addition, three new links between sexual and asexual genera are provided. There are 138 genera that lack sequence data, and these are treated as Ascomycota, genera incertae sedis. Line drawings and descriptions are provided based on the examination of types and fresh collections and on the literature.
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    Item type:Publication,
    Two species of Agaricus sect. Xanthodermatei from Thailand
    (2012-01-01)
    Zhao, Rui Lin
    ;
    Desjardin, Dennis E.
    ;
    Callac, Philippe
    ;
    Parra, Luis A.
    ;
    Guinberteau, Jacques
    Agaricus murinocephalus is described and illustrated as a new species. This taxon, presently known only from Thailand, is characterized by a context that generally does not discolor on exposure, the lack of a phenolic odor, a cap covered by very fine, appressed, dark grey squamules outside the grey disc on a whitish background, and a broken collar-like annulus. Agaricus endoxanthus, previously reported from South America, Europe, and Asia, is recorded for the first time in Thailand. Morphological and published molecular analyses place both taxa in A. sect. Xanthodermatei based on. © 2012. Mycotaxon, Ltd.