Eichleriella biluoxueshanensis L. Wang & C. L. Zhao sp. nov.

Figs 12, 13, 14

Typification.

China. Yunnan Province • Diqing, Weixi County, Weideng, Songpo, GPS coordinates: 27°05′N, 99°13′E, altitude: 1400 m asl., on the fallen angiosperm branch, leg. C. L., 13 November 2023, CLZhao 34516 (SWFC!).

Etymology.

Biluoxueshanensis (Lat.) refers to the locality (Biluoxueshan) of the holotype specimen.

Basidiomata.

Annual, resupinate, closely adnate, coriaceous, without odor or taste when fresh, up to 8 cm long, 2 cm wide, and 700 μm thick. Hymenophore grandinioid, cream (4 A 2 / 3) to buff (4 A 4) when fresh, buff (4 A 4) to cinnamon-buff (4 / 5 B 4) upon drying. Sterile margin narrow, white (60) to cream (4 A 2 / 3), up to 1 mm.

Hyphal system.

Dimitic; generative hyphae simple-septate, colorless, thin-walled, smooth, rarely branched, interwoven, 3–4 µm in diameter; skeletal hyphae distinctly thick-walled, smooth, unbranched, interwoven, IKI –, CB –, 3–4 µm in diameter; tissues unchanged in KOH.

Hymenium.

Cystidia subclavate, flexuous, colorless, thin-walled, smooth, 40–45.5 × 6–9.5 µm. Basidia narrowly ovoid to ellipsoid, longitudinally septate, four-celled, 21–29 × 11.5–15 µm; basidioles numerous, in shape similar to basidia but smaller. Hyphidia arising from generative hyphae, nodulose, branched, colorless, thin-walled, 58–72.5 × 2.5–4 µm in diameter.

Spores.

Basidiospores allantoid, colorless, thin-walled, smooth, usually with one or more oil drops, IKI –, CB –, (12 –) 13.5–17.5 (– 18) × (6.5 –) 7–9 (– 9.5) µm, L = 15.57 µm, W = 7.99 µm, Q = 1.95–2.06 (n = 60 / 2).

Additional specimen examined (paratype).

China. Yunnan Province • Diqing, Weixi County, Zhonglu, Lagaluo, GPS coordinates: 27°9′N, 99°8′E, altitude: 1710 m asl., on the fallen angiosperm branch, leg. C. L. Zhao, 10 October 2023, CLZhao 34793 (SWFC!).