Gyrophanopsis changlinii W.Y. Xiao & H.M. Zhou, 2025

Xiao, Wenyuan, Li, Yunchao, Gu, Zirui & Zhou, Hongmin, 2025, Morphological characteristics and phylogenetic analyses revealed Gyrophanopsis changlinii sp. nov. (Polyporales, Basidiomycota) from Southwest China, Phytotaxa 701 (3), pp. 223-234 : 228

Gyrophanopsis changlinii W.Y. Xiao & H.M. Zhou , sp. nov. Figures. 2–3 .

MycoBank no.: 856152

Etymology:— Changlinii (Lat.) in honor of the Chinese mycologist, Prof. Changlin Zhao.

Holotype:— CHINA. Yunnan Province, Dehong, Yingjiang County, Tongbiguan Provincial Nature Reserve , GPS coordinates 23°48′N, 97°38′E, evel. 1500 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 19 July 2023, CLZhao 30338 ( SWFC).

Basidiomes:—Annual, resupinate, effused, byssoid, without odor or taste when fresh, up to 8 cm long, 7 cm wide, and 100 μm thick. Hymenophore surface white when fresh, white to slightly buff, flocculent when dry. Sterile margin narrow, slightly buff, up to 1 mm.

Hyphal system:—Monomitic; generative hyphae with clamp connections, colorless, thin- to thick-walled, frequently branched, IKI–, CB+, 3–5 µm in diameter; tissues unchanged in KOH. Cystidia clavate to subcylindrical, smooth, thin- to thick-walled, with 2–3 clamp connections, 9–13 × 4–5 µm. Basidia barrel-shaped with a slight median constriction, colorless, thin-walled, with four sterigmata and a basal clamp connection, 8–15 × 3.5–5 µm; basidioles in shape similar to basidia, but slightly smaller.

Spores:—Basidiospores subglobose to globose, colorless, thick-walled, IKI–, CB+, 4.5–5.3(–5.5) × (4–)4.1–4.9(– 5) µm, L = 5 µm, W = 4.5 µm, Q = 1.01–1.08 (n = 180/6).

Additional specimens examined (paratypes):— CHINA. Yunnan Province, Dehong, Yingjiang County, Tongbiguan Provincial Nature Reserve, GPS coordinates 23°48′ N, 97°38′ E, evel. 1500 m a.s.l., on fallen angiosperm branch, 19 July 2023, CLZhao 30151, CLZhao 30209, CLZhao 30310, CLZhao 30404, CLZhao 30533 (SWFC).

Figures

FIGURE 2. Gyrophanopsis changlinii (holotype, CLZhao 30338): (A) Basidiomata on the substrate; (B) Macroscopic characteristics of hymenophore. Bars: (A) = 1 cm, (B) = 2 mm.

FIGURE 3. Microscopic structures of Gyrophanopsis changlinii (holotype, CLZhao 30338): (A) Basidiospores; (B) Basidia; (C) Basidioles; (D) Cystidia; (E) A section of the hymenium. Bars: (A)= 5 µm, (B–E) = 10 µm.