Lyomyces albopulverulentus C.L. Zhao, 2023

Guan, Qian-Xin, Huang, Jing, Huang, Jian & Zhao, Chang-Lin, 2023, Five new species of Schizoporaceae (Basidiomycota, Hymenochaetales) from East Asia, MycoKeys 96, pp. 25-56 : 25

Lyomyces albopulverulentus C.L. Zhao sp. nov.

Figs 4 , 5

Type material.

Holotype. China. Yunnan Province, Lijiang, Lashihai Nature Reserve, 26°51'37"N, 100°8'14"E, altitude 2450 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 19 July 2021, CLZhao 21478 (SWFC).

Etymology.

Albopulverulentus (Lat.): referring to the white and pruinose hymenial surface.

Description.

Basidiomata annual, resupinate, adnate, brittle, without odor or taste when fresh, up to 12 cm long, 1.5 cm wide, and 150 µm thick. Hymenial surface pruinose, white when fresh and drying. Sterile margin indistinct, white, and up to 2 mm wide.

Hyphal system monomitic, generative hyphae with clamp connections, colorless, thick-walled, frequently branched, interwoven, 3.5-5.5 µm in diameter; IKI-, CB-, tissues unchanged in KOH; subhymenial hyphae densely covered by crystals.

Cystidia capitate, colorless, thin-walled, smooth, slightly constricted at the neck, with a globose tip, 37-54 × 5-9 µm; basidia clavate, slightly sinuous, with four sterigmata and a basal clamp connection, 24.5-28.5 × 7-9 µm.

Basidiospores ellipsoid, colorless, thin-walled, smooth, IKI-, CB-, (7.5-)8-10.5(-11) × (5-)5.5-7 µm, L =9.12 µm, W = 6 µm, Q = 1.52 (n = 30/1).

Additional specimen examined

(paratype). China. Yunnan Province, Yuxi, Xinping County, the Ancient Tea Horse Road, 23°57'10"N, 101°30'41"E, altitude 2,600 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 13 January 2018, CLZhao 5234 (SWFC).

Figures

Figure 4. Basidiomata of Lyomyces albopulverulentus (holotype). Scale bars: 2 cm (A); 1 mm (B).

Figure 5. Microscopic structures of Lyomyces albopulverulentus (holotype) A basidiospores B basidia and basidioles C capitate cystidia D a section of hymenium. Scale bars: 10 µm (A-D).