Rhizochaete membranacea Q. Li & C. L. Zhao 2026, sp. nov.
Year: 2026
Type: article
Abstract: Rhizochaete membranacea Q. Li & C. L. Zhao sp. nov. Figs 10, 11, 12 Holotype. China, • Yunnan Province, Zhaotong, Qiaojia County, Yaoshan Town, Yaoshan National Nature Reserve, 27°11'N, 103°07'E, elevation 3251 m asl., on fallen angiosperm branch, leg. C. L. Zhao, 22 August 2020, CLZhao 20593 (SWFC 00020593). Etymology. Membranacea (Lat.) refers to the membranaceous basidiomata of the type specimen. Basidiomata. Annual, resupinate, closely adnate, membranaceous, without odor or taste when fresh, becoming fragile upon drying, up to 10 cm long, 2 cm wide, 100 µm thick. Hymenial surface smooth, cracked, slightly buff when fresh, slightly buff to slightly brown upon drying. Sterile margin slightly buff, radial, up to 4 mm wide. Hyphal structure. Monomitic, generative hyphae with simple septate, colorless, thin- to slightly thick-walled, branched, interwoven, 1.5–6.5 µm in diameter; subicular hyphae encrusted with granular material; and some hyphae encrusted with crystals, IKI –, CB –; tissues unchanged in KOH. Hymenium. Lamprocystidia numerous, colorless, slightly thick-walled, encrusted with heavy crystals, 24–45 × 8–11 µm. Basidia subcylindrical, slightly constricted in the median to somewhat sinuous, with four sterigmata and a basal simple septum, 18–28 × 4–6 µm; basidioles dominant, similar to basidia in shape, but slightly smaller. Basidiospores. Ellipsoid, colorless, smooth, thin-walled, IKI –, CB –, (3.8 –) 4–5.5 (– 5.6) × (2.5 –) 2.7–3.1 (– 3.4) µm, L = 4.67 µm, W = 2.90 µm, Q = 1.61–1.76 (n = 60 / 2). Type of rot. White rot. Additional specimen (paratype) examined. China, • Yunnan Province, Zhaotong, Qiaojia County, Yaoshan Town, 27°11'N, 103°07'E, elevation 3200 m asl., on fallen angiosperm branch, leg. C. L. Zhao, 2 November 2025, CLZhao 50723 (SWFC 00050723).
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7204232144