Trechispora albofarinosa K. Y. Luo & C. L. Zhao, 2024

Luo, Kai-Yue, Su, Jiang-Qing & Zhao, Chang-Lin, 2024, Morphological and molecular identification for four new wood-inhabiting species of Trechispora (Basidiomycota) from China, MycoKeys 105, pp. 155-178 : 155-178

Trechispora albofarinosa K. Y. Luo & C. L. Zhao sp. nov.

Figs 2 , 3

Holotype.

China. Yunnan Province, Pu’er, Jingdong County, Huangcaoling , Wuliangshan National Nature Reserve , 24 ° 23 ′ N, 100 ° 45 ′ E, altitude 2350 m a. s. l., on the fallen branch of Pinus , leg. C. L. Zhao, 5 October 2017, CLZhao 4356 ( SWFC).

Etymology.

Albofarinosa (Lat.): referring to the farinose basidiomata with white hymenial surface.

Description.

Basidiomata annual, resupinate, farinose, without odor or taste when fresh, up to 3.5 cm long, 1.5 cm wide, and 300–500 µm thick. Hymenial surface flocculence, white when fresh, white to cream on drying. Sterile margin indistinct, white, and up to 0.5 mm wide.

Hyphal system monomitic, generative hyphae with clamp connections with ampullaceous septa, colorless, thick-walled, frequently branched, interwoven, 2–3.5 µm in diameter; IKI –, CB –, tissues unchanged in KOH.

Cystidia and cystidioles absent; basidia clavate, with four sterigmata and a basal clamp connection, 6.5–10 × 3.5–5 µm.

Basidiospores ellipsoid, colorless, thin-walled, aculeate, IKI –, CB –, 2.5–3.5 (– 4) × 2–2.5 (– 3.5) μm, L = 3.18 µm, W = 2.44 µm, Q = 1.3 (n = 30 / 1).

Figures

Figure 2. Basidiomata of Trechispora albofarinosa (holotype) A the front of the basidiomata B characteristic hymenophore. Scale bars: 1 cm (A); 1 mm (B).

Figure 3. Microscopic structures of Trechispora albofarinosa (holotype) A basidiospores B basidia and basidioles C a cross section of basidiomata. Scale bars: 5 μm (A); 10 µm (B, C).