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Description type:Non-original description 
Description:Fruitbody. - Basidiocarps annual, resupinate, adnate, leathery and without odour or taste when fresh, becoming woody hard upon drying, up to 20 cm long, 10 cm wide and 0.2 cm thick. Pore surface greyish brown when fresh, dark brown when bruised, yellowish brown to dark brown when dry, glancing, cracked when dry; margin rust-brown, very narrow to almost lacking; pores circular to angular, 8-9 per mm; dissepiments thin, entire. Context dark brown, coriaceous, up to 0.3 mm thick. Tubes concolorous with pore surface, rigid when dry, up to 2.7 mm long.
Hyphal structure. - Hyphal system dimitic; generative hyphae simple septate; tissue darkening but otherwise unchanged in KOH.
Subiculum. - Generative hyphae infrequent, hyaline, thin- to slightly thick-walled, rarely branched, 2-3 µm in diam; skeletal hyphae yellowish, thick-walled with a narrow lumen, flexuous, unbranched, interwoven, 2-3.5 µm in diam.
Tubes. - Generative hyphae hyaline, thin- to slightly thick-walled, occasionally branched, 2-2.8 µm in diam; skeletal hyphae thick-walled with a narrow lumen, unbranched, 2.5-3.2 µm in diam. Setae frequent, ventricose to subulate, acute, dark reddish brown, thick-walled to subsolid, 12-23 x 5-6.5 µm; cystidia and cystidioles absent; basidia subglobose to barrel-shaped, with a simple septum and four sterigmata, 6-8 ? 4.5-6 µm; basidioles mostly subglobose, slightly smaller than basidia.
Spores. - Basidiospores broadly ellipsoid to subglobose, yellowish, thick-walled, smooth, IKI-, CB-, (3.2-)3.6-4(-4.5) x (2.7-)2.8-3.4(-3.5) µm, L = 3.76 µm, W = 3.11 µm, Q = 1.21 (n=30/1).
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