Ceriporiopsis tianshanensis B.K. Cui & T.M. Xu, 2023

Xu, Tai-Min, Sun, Yi-Fei, Liu, Shun, Song, Chang-Ge, Gao, Neng, Wu, Dong-Mei & Cui, Bao-Kai, 2023, Ceriporiopsis tianshanensis (Polyporales, Agaricomycetes) and Sidera tianshanensis (Hymenochaetales, Agaricomycetes), two new species of wood-inhabiting fungi from Xinjiang, Northwest China, MycoKeys 98, pp. 1-18 : 1

Ceriporiopsis tianshanensis B.K. Cui & T.M. Xu sp. nov.

Figs 3 , 4

Diagnosis.

Ceriporiopsis tianshanensis is characterized by a cream to salmon-buff pore surface when fresh, large pores measuring 1-3 per mm, broadly ellipsoid basidiospores measuring 5-6.5 × 3-4 μm, and growth on the stump of Picea schrenkiana Fisch. et Mey.

Type.

China. Xinjiang Autonomous Region, Tekes County, Kosang Cave National Forest Park , on the stump of Picea schrenkiana , 19 September 2021, Cui 19150 (holotype) .

Etymology.

Picea tianshanensis (Lat.): referring to the species occurrence in Tianshan.

Fruiting body.

Basidiocarps annual, resupinate, adnate, not easily separated from the substrate, soft corky when fresh, fragile to hard fibrous when dry, up to 12 cm long, 3 cm wide, 2 mm thick. Pore surface white to cream or salmon-buff when fresh, becoming buff to vinaceous-buff or fawn when dry; pores irregular, 1-3 per mm; dissepiments thin, entire. Subiculum cream to buff and fibrous to soft corky when dry, up to 4 mm thick. Tubes concolorous with pore surface, corky, up to 4 mm long.

Hyphal structure.

Hyphal system monomitic; generative hyphae with clamp connections, lack crystal, IKI-, CB-; tissues unchanged in KOH.

Subiculum.

Generative hyphae hyaline, thin- to slightly thick-walled, often branched, interwoven, 3.5-5 μm in diameter.

Tubes.

Generative hyphae hyaline, thin- to slightly thick-walled, occasionally branched, interwoven, 3-6 μm in diameter. Cystidia and other sterile hymenial elements absent. Basidia short clavate to barrel-shaped, bearing four sterigmata and a basal clamp connection, 12-22 × 5-6 μm; basidioles dominant, in shape similar to basidia, but smaller.

Spores.

Basidiospores broadly ellipsoid, colorless, thin-walled, smooth, often with one guttule, IKI-, CB-, 5-6.5 × 3-4 µm, L = 5.9 µm, W = 3.5 µm, Q = 1.69-1.74 (n = 60/2).

Type of rot.

White rot.

Additional specimen (paratype) examined.

China. Xinjiang Autonomous Region, Tekes County, Kosang Cave National Forest Park, on the stump of Picea schrenkiana , 19 September 2021, Cui 19151.

Figures

Figure 3. Basidiocarps of Ceriporiopsis tianshanensis (Cui 19151). Scale bar: 1.0 cm.

Figure 4. Microscopic structures of Ceriporiopsis tianshanensis (Cui 19150) a basidiospores b basidia and basidioles c hyphae from the subiculum d hyphae from trama.