Lyomyces wuliangshanensis 2020

Lyomyces wuliangshanensis C.L. Zhao 2020

MycoBank No: 834039

Holotype: China. Yunnan Province: Puer, Jingdong County, Wuliangshan National Nature Reserve, on fallen branch of angiosperm, 5 October 2017, CLZhao 4167 (SWFC).

Morphological description

Basidiomata. Annual, resupinate, subcoriaceous when fresh, becoming coriaceous upon drying, up to 15 cm long and 5 cm wide, 50–150 µm thick. Hymenial surface smooth to more or less tuberculate, white to cream when fresh, turning cream to buff upon drying. Margin narrow, concolorous with hymenial surface.

Hyphal system. Monomitic; generative hyphae with clamp connections, hyaline, thick-walled, branched, 2–3 µm in diameter, IKI–, cyanophilous; tissues unchanged in KOH. Numerous crystals present among hyphae.

Hymenium. Two kinds of cystidia: 1) capitate, hyaline, thin-walled, 22–37 × 3–6 µm; 2) tapering, hyaline, thin-walled, 21–35 × 4–6.5 µm; fusoid cystidioles present, hyaline, thin-walled, 16–21 × 2.5–3.5 µm. Basidia clavate, hyaline, thin-walled, with four sterigmata and a basal clamp connection, 12–20 × 3–4.3 µm.

Spores. Basidiospores ellipsoid, hyaline, slightly thick-walled, smooth, IKI–, cyanophilous, guttulate, (3.3–)3.5–5.3(–5.5) × 2.8–4(–4.2) µm, L = 4.3 µm, W = 3.56 µm, Q = 1.22–1.31 (n = 120/4).

Habitat: on fallen branch of angiosperm.

Distribution: China.

GenBank Accession: ITS:MN945979

Notes: 

Reference: Chen J-Z, Zhao C-L (2020) Morphological and molecular identification of four new resupinate species of Lyomyces (Hymenochaetales) from southern China. MycoKeys 65: 101–118. https://doi.org/10.3897/ mycokeys.65.48660

Basidiomata of Lyomyces wuliangshanensis (holotype). Scale bars: 1 cm (A); 5 mm (B).