Burgella fissurata Q. Zhou & C. L. Zhao, 2025

Zhou, Qian, Qian, Chengbin, Zhang, Chuyun, Su, Qidong, Li, Yiliang, Zhang, Shihui, Mu, Nian, Xu, Taimin, Zhou, Hongmin & Zhao, Changlin, 2025, Morphology and multigene phylogeny reveals five new species of Hydnaceae (Cantharellales, Basidiomycota) from China, MycoKeys 119, pp. 67-94 : 67-94

Burgella fissurata Q. Zhou & C. L. Zhao sp. nov.

Figs 6 , 7 , 8

Holotype.

China • Yunnan Province: Dehong, Yingjiang County, Tongbiguan provincial nature reserve , GPS coordinates: 24°30′N, 097°30′E, altitude: 1300 m asl., on the fallen branch of angiosperm, leg. C. L. Zhao, 19 July 2023, CLZhao 30212 ( SWFC).

Etymology.

fissurata (Lat.): refers to the cracking hymenial surface of the type specimens.

Description.

Basidiomata annual, resupinate, adnate, pruinose, hypochnoid, without odor or taste when fresh, up to 10.2 cm long, 1 cm wide, 50–100 µm thick. Hymenial surface smooth, cracked, white when fresh, turning to pale cream upon drying. Sterile margin thin, white, thinning out, up to 1 mm wide.

Hyphal system monomitic, generative hyphae with clamp connections, colorless, thin-walled, frequently branched, interwoven, 2–4 μm in diameter; IKI –, CB –, tissues unchanged in KOH.

Cystidia umbrella-shaped, colorless, thin-walled, smooth, 5.5–10 × 4–6 µm; cystidioles absent. Basidia urniform, with a median constriction, thin-walled, with 4 sterigmata and a basal clamp connection, 6–11.5 × 2–4.5 μm; basidioles abundant, in shape similar to basidia, but slightly smaller.

Basidiospores narrowly ellipsoid, colorless, thin-walled, smooth, IKI –, CB –, (2.5 –) 3–4 × 1–2 μm, L = 3.36 µm, W = 1.63 µm, Q = 2.06 μm (n = 30 / 1).

Figures

Figure 6. Basidiomata of Burgella fissurata (holotype). Scale bars: 1 cm (A); 1 mm (B).

Figure 7. Microscopic structures of Burgella fissurata (holotype): basidiospores (A), basidia and basidioles (B), umbrella-shaped cystidia (C), a section of hymenium (D). Scale bars: 5 µm (A); 10 µm (B, C).

Figure 8. Microscopic structures of Burgella fissurata (holotype): basidiospores (A), basidia and basidioles; umbrella-shaped cystidia (B), generative hyphae (C), a section of hymenium (D). Scale bars: 10 µm (A – D).