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Issue: Vol. 780 No. 2: 15 Oct. 2026
Type: Article
Published: 2026-10-15
DOI: 10.11646/phytotaxa.780.2.3
Page range: 155-165
Abstract views: 20
PDF downloaded: 0

A new species of Cortinarius (Agaricales, Basidiomycota) from Guangxi Autonomous Region, South China

School of Ecology and Nature Conservation; Beijing Forestry University; Beijing 100083; China
School of Ecology and Nature Conservation; Beijing Forestry University; Beijing 100083; China; Guangxi Forestry Science Research Institute; Nanning 530002; China
School of Ecology and Nature Conservation; Beijing Forestry University; Beijing 100083; China
Fungarium; Institute of Microbiology; Chinese Academy of Sciences; Beijing 100101; China
School of Ecology and Nature Conservation; Beijing Forestry University; Beijing 100083; China
Fungi Cortinarius Guangxi ITS New species Phylogeny Telamonia

Abstract

A new species of Cortinarius subgenus Telamonia section Laeti is described from the mountainous region of Guangxi, South China, based on morphological characteristics and internal transcribed spacer (ITS) phylogeny. This species is distinguished by its small basidiomata (pilei 10–30 mm), hygrophanous brown pileus, moderately to distantly spaced lamellae, and a slender, fibrillose-striate stipe (30–50 × 2.1–2.8 mm) without conspicuous veil remnants. Microscopically, the species possesses ellipsoid to oblong-ellipsoid basidiospores (7.6–11.7 × 4.3–6.6 µm) with irregular verrucae. Specimens were collected from the forest floor in a Tsuga tchekiangensis stand and form a strongly supported lineage, sister to C. paradetonsus (BS = 98%, BPP = 0.98). An illustrated description and a comparison with related species are presented.

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How to Cite

Liu, S., Zeng, G.-Y., Zhao, Y.-L., Wei, T.-Z. & Dai, Y.-C. (2026) A new species of Cortinarius (Agaricales, Basidiomycota) from Guangxi Autonomous Region, South China. Phytotaxa 780 (2): 155–165. https://doi.org/10.11646/phytotaxa.780.2.3