Gloeohypochnicium yunnanense L. Wang & C. L. Zhao 2025, sp. nov.

Gloeohypochnicium yunnanense L. Wang & C. L. Zhao sp. nov. Figs 15, 16, 17 Typification. China. Yunnan Province • Dehong, Yingjiang County, Tongbiguan Provincial Nature Reserve, GPS coordinates: 25°50′N, 97°36′E, altitude: 1000 m asl., on the dead bamboo, leg. C. L. Zhao, 18 July 2023, CLZhao 30049 (SWFC!). Etymology. Yunnanense (Lat.) refers to the locality “ Yunnan Province ” of the holotype specimen. Basidiomata. Annual, resupinate, closely adnate, coriaceous, without odor or taste when fresh, up to 5 cm long, 3 cm wide, and 600 μm thick. Hymenophore smooth, slightly buff (4 A 4) when fresh, buff (4 A 4) to cream (4 A 2 / 3) upon drying. Sterile margin narrow, white (60) to buff (4 A 4), up to 1 mm. Hyphal system. Monomitic; generative hyphae with clamp connections, colorless, thick-walled, smooth, branched, interwoven, 1.5–4 µm in diameter; IKI –, CB –, tissues unchanged in KOH. Hymenium. Cystidia subcylindrical to subulate, flexuous, thin-walled, encrusted with whitish to yellowish crystals, 75–115.5 × 11.5–15 µm. Basidia subcylindrical to clavate, slightly flexuous, a basal clamp connection and four sterigmata, 55.5–70 × 9.5–11 µm; basidioles numerous, in shape similar to basidia but smaller. Spores. Basidiospores globose, colorless, thick-walled, warted, IKI –, CB –, (9.5 –) 10–12 × (9.5 –) 10–11.5 µm, L = 10.91 µm, W = 10.45 µm, Q = 1.04–1.05 (n = 60 / 2). Additional specimen examined (paratype). China. Yunnan Province • Dehong, Yingjiang County, Tongbiguan Provincial Nature Reserve, GPS coordinates: 27°52′N, 97°38′E, altitude: 1000 m asl., on dead bamboo, leg. C. L. Zhao, 18 July 2023, CLZhao 30018 (SWFC!).