Lyomyces albomarginatus Y. F. Dai & C. L. Zhao, 2025

Dai, Yunfei, Yuan, Qi, Yang, Xin, Liu, Rui, Liu, Defu, Yuan, Haisheng & Zhao, Changlin, 2025, Morphological characteristics and phylogenetic analyses reveal five new species of Hymenochaetales (Agaricomycetes, Basidiomycota) from southwestern China, MycoKeys 114, pp. 133-175 : 133-175

publication ID	https://doi.org/10.3897/mycokeys.114.143851
DOI	https://doi.org/10.5281/zenodo.14931694
persistent identifier	https://treatment.plazi.org/id/812ED088-29F1-5979-84A7-EACC79ACBDB3
treatment provided by	MycoKeys by Pensoft
scientific name	Lyomyces albomarginatus Y. F. Dai & C. L. Zhao
status	sp. nov.

Treatment

Lyomyces albomarginatus Y. F. Dai & C. L. Zhao sp. nov.

Figs 10 View Figure 10 , 11 View Figure 11

Holotype.

China • Yunnan Province, Dali, Weishan County, QinghuaTown, Green Peacock Reserve , Jiangzui Village , GPS coordinates 25°01′N, 100°11′E, evel. 1500 m a. s. l., on a fallen branch of angiosperm, leg. C. L. Zhao, 18 July 2022, CLZhao 22551 ( SWFC). GoogleMaps

Etymology.

albomarginatus (Lat.), refers to the white margin of the basidiomata.

Basidiomata.

Annual, resupinate, adnate, without odor or taste when fresh, up to 8 cm long, 3 cm wide, and 150 µm thick. Hymenial surface cracked, slightly buff when fresh, turning to buff to slightly yellowish upon drying. Sterile margin slightly buff, up to 3 mm wide.

Hyphal system.

Monomitic, generative hyphae with clamp connections, colorless, thin to slightly thick-walled, rarely branched, interwoven, 2.0–3.5 µm in diameter, IKI –, CB –; tissues unchanged in KOH.

Hymenium.

Cystidia numerous, tapering, thin-walled, smooth, 22.5–30.0 × 2.0–4.0 µm; cystidioles absent. Basidia cylindrical, colorless, thin-walled, with four sterigmata, 15.0–19.0 × 3.5–4.3 µm; basidioles in shape similar to basidia, but slightly smaller.

Basidiospores.

Elliposoid, colorless, thin-walled, smooth, with one guttate, IKI –, CB –, (3.5 –) 4.0–5.5 (– 6.0) × (2.5 –) 2.7–3.5 (– 3.7) µm, L = 4.89 µm, W = 3.13 µm, Q = 1.56 (n = 30 / 1).