Scopuloides farinacea Z. R Gu & C. L. Zhao 2025, sp. nov.

Scopuloides farinacea Z. R Gu & C. L. Zhao sp. nov. Figs 14, 15, 16 Diagnosis. Differs from other Scopuloides species by its coriaceous, pale cream to buff basidiomata, a monomitic hyphal system with simple-septate generative hyphae, and ellipsoid basidiospores measuring 2.8–3.5 × 1.4–2 µm. Holotype. China • Yunnan Province, Dehong, Yingjiang County, Tongbiguan Provincial Nature Reserve, GPS coordinates: 24°42'N, 97°56'E, altitude 850 m asl., on the fallen angiosperm branch, leg. C. L. Zhao, 19 July 2023, CLZhao 30181, GenBank: ITS = PV 470559; nLSU = PV 474204 (SWFC). Etymology. Farinacea (Latin or Greek origin): refers to the farinaceous hymenial surface of the type specimens. Description. Basidiomata. Annual, resupinate, closely adnate, coriaceous, without odor or taste when fresh, up to 20 cm long, 3 cm wide, and 400 μm thick at center. Hymenophore grandinoid, white to cream when fresh, pale cream to buff upon drying. Sterile margin white to pale cream, up to 1 mm. Hyphal system. Monomitic; generative hyphae with simple septa, colorless, thin- to slightly thick-walled, smooth, branched, more or less parallel with substrate, 1.7–5.5 µm in diameter, IKI –, CB –; tissues unchanged in KOH. Hymenium. Lamprocystidia abundant, conical or subulate, colorless, simple-septate at base, heavily encrusted, originating from trama or subiculum, immersed or projecting, 21.2–39.5 × 6–13 µm. Basidia subcylindrical, slightly flexuous, with a basal simple septum and four sterigmata, 4.6–8 × 1.8–2.7 µm; basidioles numerous, in shape similar to basidia but slightly smaller. Basidiospores. Basidiospores ellipsoid, colorless, thin-walled, smooth, IKI –, CB –, (2.6 –) 2.8–3.5 (– 3.7) × (1.2 –) 1.4–2 µm, L = 3.08 µm, W = 1.65 µm, Q = 1.79–1.92 (n = 90 / 3). Additional specimens examined (paratypes). China • Yunnan Province, Zhaotong, Yiliang County, Xiaocaoba Town, Wumengshan National Nature Reserve, Wangfu Waterfall, GPS coordinates: 22°19'N, 103°43'E, altitude 1800 m asl., on the fallen angiosperm branch, leg. H. M. Zhou, 18 August 2024, HMZhou 153, GenBank: ITS = PV 470560, nLSU = PV 474205; • Dehong, Yingjiang County, Tongbiguan Provincial Nature Reserve, GPS coordinates: 24°42'N, 97°56'E, altitude 850 m asl., on the angiosperm trunk, leg. C. L. Zhao, 18 July 2023, CLZhao 30005, GenBank: ITS = PV 470558; nLSU = PV 474203 (SWFC).