Morphology and multigene phylogeny reveals five new species of Hydnaceae (Cantharellales, Basidiomycota) from China Zhou, Qian Qian, Chengbin Zhang, Chuyun Su, Qidong Li, Yiliang Zhang, Shihui Mu, Nian Xu, Taimin Zhou, Hongmin Zhao, Changlin MycoKeys 2025 2025-06-26 119 67 94 Q. Zhou & C. L. Zhao Q. Zhou & C. L. Zhao 2025 Agaricomycetes Hydnaceae Burgoa Fungi Cantharellales Basidiomycota species wumengshanensis sp. nov.   Figs 9, 10, 11    Holotype.   China• Yunnan Province: Zhaotong, Yiliang County, Luozehe Town, Lijiaping Village, Wumengshan National Nature Reserve, GPS coordinates:  27°29′N, 103°55′E, altitude:  1900 masl., on the fallen branch of angiosperm, leg. C. L. Zhao,  19 September 2023, CLZhao 33227 ( SWFC).   Etymology.  wumengshanensis(Lat.): refers to the locality, Wumengshan National Natural Reserve, of the type specimens.   Figure 9. Basidiomata of  Burgoa wumengshanensis(holotype). Scale bars: 1 cm ( A); 1 mm ( B)   Description. Basidiomata annual, resupinate, adnate, pellicular, pruinose upon drying, without odor or taste when fresh, up to 7.4 cmlong, 2.1 cmwide, 40–90 µm thick. Hymenial surface smooth, white when fresh, turning to pale cream upon drying. Sterile margin thin, white, up to 1 mmwide.   Figure 10. Microscopic structures of  Burgoa wumengshanensis(holotype) basidiospores ( A), basidia and basidioles ( B), schizopapillate cystidia ( C), clavate cystidioles ( D), a section of hymenium ( E). Scale bars: 5 µm ( A), 10 µm ( B, E). Hyphal system monomitic, generative hyphae with clamp connections, sometimes with oily contents, colorless, slightly thick-walled, frequently branched, interwoven, 3.5–5 µm in diameter; IKI –, CB –, tissues unchanged in KOH.   Figure 11. Microscopic structures of  Burgoa wumengshanensis(holotype) basidiospores ( A), basidia ( B), clavate cystidioles (C), schizopapillate cystidia ( D), a section of hymenium ( E), generative hyphae ( F, G). Scale bars: 10 µm ( A – G). Cystidia schizopapillate, colorless, thin-walled, smooth, 30.5–49 × 5.5–8 µm; cystidioles clavate, colorless, thin-walled, smooth, 22–29.5 × 5–8 µm. Basidia urniform, with a median constriction, slightly thick-walled, with 8 sterigmata and a basal clamp connection, 12–20 × 3.5–6 µm; basidioles abundant, in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, colorless, thin-walled, smooth, with oil drop, IKI –, CB –, (3.5) – 4–5.5 (– 6) × 2–3.5 µm, L = 4.5 µm, W = 2.78 µm, Q = 1.62 (n = 30 / 1). 5200536306 on the fallen branch of angiosperm 2023-09-19 SWFC C. L. Zhao China Yiliang County 1900 27.483334 Wumengshan National Nature Reserve 1237 103.916664 Zhaotong 1 Yunnan Province holotype