Elaphroporia ailaoshanensis Z.Q. Wu & C.L. Zhao

Wu, Zi-Qiang, Xu, Tai-Min, Shen, Shan, Liu, Xiang-Fu, Luo, Kai-Yue & Zhao, Chang-Lin, 2018, Elaphroporiaailaoshanensis gen. et sp. nov. in Polyporales (Basidiomycota), MycoKeys 29, pp. 81-95 : 86

Elaphroporia ailaoshanensis Z.Q. Wu & C.L. Zhao sp. nov. Figs 3, 4

Diagnosis.

This species is distinguished by the cream to yellow pore surface upon drying; pores angular, 7-9 per mm. Hyphal system monomitic; generative hyphae thick-walled bearing both clamp connections and simple septa, slightly amyloid, CB+. Basidiospores ellipsoid, hyaline, thin-walled, smooth, IKI–, CB–, 1.9-2.5 × 1.5-2 µm.

Holotype

CHINA. Yunnan Province: Jingdong county, Ailaoshan Nature Reserve, 2 October 2016, on the angiosperm trunk, CLZhao 595 (Holotype in SWFC).

Etymology.

Ailaoshanensis (Lat.): referring to the locality (Ailaoshan) of the type specimens.

Basidiocarps.

Annual, resupinate, easy to separate from substrate, soft corky when fresh, without odour or taste when fresh, becoming rigid and light-weight up on drying, up to 5 cm long, 3.5 cm wide, 4 mm thick at centre. Pore surface cream to pale yellow when fresh, turning to yellow upon drying; pores angular, 7-9 per mm; dissepiments thin, entire. Sterile margin narrow, cream, up to 1 mm wide. Subiculum thin, cream, corky, up to 0.2 mm thick. Tubes concolorous with pore surface, hard corky, up to 3.8 mm long.

Hyphal structure.

Hyphal system monomitic; generative hyphae thick-walled, slightly amyloid, CB+; tissues unchanged in KOH.

Subiculum.

Generative hyphae hyaline, thick-walled bearing both clamp connections and simple septa, simple septa more frequent than clamps, occasionally branched, interwoven, 3.5-5.5 µm in diam.

Tubes.

Generative hyphae hyaline, thick-walled bearing simple septa only, occasionally branched, 3-5 µm in diameter. Cystidia and cystidioles absent; basidia clavate, with four sterigmata and a basal clamp connection, 10.5-14.5 × 3.5-4.5 µm; basidioles dominant, in shape similar to basidia, but slightly smaller.

Spores.

Basidiospores ellipsoid, hyaline, thin-walled, smooth, IKI–, CB–, (1.7 –)1.9–2.5(– 2.9) × (1.3 –)1.5–2(– 2.2) µm, L = 2.29 µm, W = 1.74 µm, Q = 1.33-1.81 (n = 120/4).

Additional specimens examined

(paratypes). CHINA. Yunnan Province: Jingdong county, Ailaoshan Nature Reserve, 2 October 2016, on the angiosperm trunk, CLZhao 596, CLZhao 597, CLZhao 598 (SWFC).