Adustochaete is a small genus of wood-inhabiting basidiomycetes, currently comprising only six described species. A recent study has clarified the classification of this genus by combining phylogenetic analyses and morphological characteristics. However, the species diversity of Adustochaete in the high-altitude forests of Yunnan Province, China, has not been systematically studied. In the present study, detailed morphological characteristics and combined multi-locus phylogenetic analyses based on the internal transcribed spacers (ITS) and the large subunit (nrLSU) of the nuclear ribosomal DNA (rDNA) revealed a new species in Adustochaete, viz. A. sinensis. Comprehensive descriptions, micrographs, and phylogenetic analysis results are provided. The present study enriches the species diversity of Auriculariales in China, which should help protect and sustainably use fungal natural resources.
A new species, Vararia subtropica, from Yunnan Province, SW China, is described and illustrated based on morphological characters and phylogenetic analyses. Vararia subtropica is characterized by the cream to buff hymenial surface, a dimitic hyphal system with generative hyphae with clamp connections, and cylindrical, slightly curved to allantoid basidiospores (7.1–11.3 × 2.7–5.2 µm). Sequences of ITS and nLSU were generated from the studied specimens, and phylogenetic analysis was performed with Maximum Likelihood and Bayesian Inference methods. The phylogenetic analysis indicated that the new species belongs to the genus Vararia and is the sister species of V. daweishanensis. A description, illustrations, and phylogenetic analysis results are provided. This discovery expands the known diversity of Vararia in subtropical Asia and improves our understanding of phylogenetic relationships within the genus.
Yinglian Deng, Yuotong Dou, Kaisheng Wang et al.· Phytotaxa· 0 citations
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