Rhodoantrodia purpurascens L. Wang & C.L. Zhao, sp. nov. Figs. 3 and 4.

MycoBank no.: 851549

Etymology: — purpurascens (Lat.): refers to the purple hymenial surface.

Holotype: — CHINA. Yunnan Province: Qujing, Qilin District, Cuishan Forest Park, GPS coordinates: 25°55′ N, 103°69′ E, altitude: 2245 m asl., on the fallen branch of angiosperm, leg. C.L. Zhao, 24 November 2022, C.L. Zhao 26267 (SWFC!) .

Basidiomata: —Annual, resupinate, easy to separate from substrate, corky, and up to 8 cm long, 3 cm wide, and 4.5 mm thick. Pore surface pale lilac (54D) to lavender (18/19 A 4) when fresh, become greyish purple (98B) when dry; pores round, 2–3 per mm, dissepiments thin, entire. Sterile margin very narrow, greyish purple (98B), up to 0.5 mm. Subiculum cream (4 A 2/3), corky, up to 1 mm thick. Tubes thin, greyish purple (98B), corky, up to 3.5 mm long.

Hyphal system: —Dimitic; generative hyphae with clamp connections, hyaline, slightly encrusted with crystals, thick-walled, branched, interwoven, 2.5–3 µm in diameter, IKI–, CB –, tissues unchanged in KOH; skeletal hyphae colorless, thick-walled with a narrow lumen to subsolid, unbranched, straight to flexuous, 3–3.5 µm in diameter, IKI–, CB –; tissues unchanged in KOH.

Hymenium: —Cystidia absent; cystidioles fusoid, colorless, thin-walled, 17.5–25.5 × 2–3.5 µm. Basidia clavate to subcylindrical, hyaline, thin-walled, with a basal clamp connection and four sterigmata, 21.5–24.5 × 4.5–5.2 µm; basidioles dominant, in shape similar to basidia, but slightly smaller.

Spores: —Basidiospores ellipsoid, hyaline, thin-walled, smooth, IKI–, CB –, 5.5–7.5(–8) × 3–4 µm, L = 6.43 µm, W = 3.44 µm, Q = 1.87 (n = 30/1).