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Issue: Vol. 683 No. 3: 4 Feb. 2025
Type: Article
Published: 2025-02-04
DOI: 10.11646/phytotaxa.683.3.3
Page range: 218-228
Abstract views: 124
PDF downloaded: 13

Morphology and phylogeny reveal Gymnopus pseudoandrosaceus sp. nov. (Agaricales, Basidiomycota) from Southwest China

Guizhou Academy of Sciences, Guiyang 550001, China
Guizhou Institute of Biology, Guiyang 550009, China
Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China
Department of Botany, Moravian Museum, Zelný trh 6, CZ-659 37 Brno, Czech Republic
Gymnopoid ITS marasmioid new taxa Omphalotaceae taxonomy Fungi

Abstract

Gymnopus pseudoandrosaceus sp. nov. is described from Southwest China. It is characterized by a brown marasmioid pileus, a shining black stipe, and abundant rhizomorphs, a pileipellis in the form of a cutis with encrusted pigments and without broom cells, and cheilocystidia with apical projections. The phylogenetic analysis placed the new species within the Gymnopus sect. Androsacei clade with well-supported lineages across Impudicae, Levipedes, Gymnopus, Androsacei, and Paragymnopus. Strong bootstrap values affirm these relationships, with notable diversity in Gymnopus indicating potential adaptive radiation. The pileipellis lacking broom cells is a rather unique feature in this section. Detailed morphological descriptions, basidiomata photographs, microscopic structure images, and phylogenetic analysis results are provided.

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How to Cite

Deng, C.-Y., Wang, W.-K., Li, J.-P. & Antonín, V. (2025) Morphology and phylogeny reveal Gymnopus pseudoandrosaceus sp. nov. (Agaricales, Basidiomycota) from Southwest China. Phytotaxa 683 (3): 218–228. https://doi.org/10.11646/phytotaxa.683.3.3