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Issue: Vol. 722 No. 1: 10 Oct. 2025
Type: Article
Published: 2025-10-10
DOI: 10.11646/phytotaxa.722.1.2
Page range: 16-28
Abstract views: 337
PDF downloaded: 7

Morphological characteristics and phylogenetic analyses reveal Steccherinum farinaceum sp. nov. (Polyporales, Basidiomycota) from Yunnan Province, China

Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Yunnan Tongbiguan Provincial Nature Reserve Management Bureau, Dehong 678400, P.R. China
Yunnan Tongbiguan Provincial Nature Reserve Management Bureau, Dehong 678400, P.R. China
Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Molecular systematics New taxon Steccherinaceae Taxonomy Wood-inhabiting fungi Fungi

Abstract

The wood-inhabiting fungi play a crucial role in wood degradation and the cycle of matter within the ecological system. They are considered the “key player” in wood decomposition because of their ability to decompose woody lignin, cellulose, and hemicellulose. Steccherinum farinaceum is described and illustrated based on morphological and molecular evidence. This species is characterized by white to cream basidiomata with farinaceous hymenophore and ellipsoid to subglobose basidiospores (4.0–5.5 × 3.5–4.5 µm). Sequences of the internal transcribed spacer region (ITS) and the large subunit nuclear ribosomal RNA gene (nLSU) from the studied samples were generated, and phylogenetic analyses were performed using Maximum Likelihood, Bayesian Inference, and Maximum Parsimony methods. The phylogenetic analysis indicated that the new species S. farinaceum is nested within the genus Steccherinum and is sister to two related species, S. wumengshanense and S. yunnanense. A description, illustrations, and phylogenetic analysis results of the new species are provided. Additionally, the new species is compared with closely related taxa.

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How to Cite

Zhang, X., Wang, J., Yang, R., Zhang, S., Zhang, S., Xu, J. & Zhao, C. (2025) Morphological characteristics and phylogenetic analyses reveal Steccherinum farinaceum sp. nov. (Polyporales, Basidiomycota) from Yunnan Province, China. Phytotaxa 722 (1): 16–28. https://doi.org/10.11646/phytotaxa.722.1.2