Lyomyces zhaotongensis Q. Yuan & C. L. Zhao 2024, sp. nov.

Lyomyces zhaotongensis Q. Yuan & C. L. Zhao sp. nov. Figs 9, 10 Type material. Holotype. China • Yunnan Province, Zhaotong, Wumeng Mountain National Nature Reserve, GPS coordinates 27 ° 77 ' N, 104°29'E, altitude 2900 m, on the fallen branch of angiosperm, leg. C. L. Zhao, 29 August 2023, CLZhao 32878 (SWFC). Etymology. Zhaotongensis (Lat.) refers to the type locality “ Zhaotong ”. Description. Basidiomata annual, resupinate, adnate, farinaceous when fresh, becoming coriaceous upon drying and up to 9.5 cm long, 3 cm wide, 30–80 um thick. Hymenial surface grandinioid, cream when fresh and cream to buff upon drying. Sterile margin white to cream and up to 1 mm wide. Hyphal system monomitic, generative hyphae with clamp connections, colourless, thick-walled, branched, 1.5–2 µm in diameter; IKI –, CB –, tissues unchanged in KOH. Numerous crystals present amongst generative hyphae. Cystidia fusoid, colourless, thin-walled, smooth, 16–20.5 × 2.5–3.5 µm. Basidia clavate, with 4 sterigmata and a basal clamp connection, 14–16.5 × 2.5–3.5 µm. Basidiospores broadly ellipsoid, colourless, thin-walled, smooth, with oil drops, CB –, IKI –, 2.6–3.5 × 2.5–3 µm, L = 2.99 µm, W = 2.75 µm, Q = 1.08 (n = 30 / 1). Additional specimen examined (paratype). China • Yunnan Province, Zhaotong, Wumeng Mountain National Nature Reserve, GPS coordinates 27 ° 77 ' N, 104°29'E, altitude 2900 m, on the fallen branch of angiosperm, leg. C. L. Zhao, 10 August 2024, CLZhao 40335 (SWFC).