Hymenochaete rubiginosa

An abundant species associated with decorticated Quercus wood, forming effused-reflexed, dark brown basidiomes with a yellowish growing margin.

Monomitic hyphal system: generative hyphae hyaline, 1-2.5 µm wide, septate and clampless; tramal hyphae thick-walled, 2-4 µm wide, with abundant brown intracellular pigment, septate and clampless.

Cystidia absent.

Hymenial and subicular setae thick-walled, 40-60 µm long and 5-7 µm wide, with abundant brown intracellular pigment and acute, slightly more hyaline apices.

Basidia cylindric-clavate, 20-25 µm long and 3-4.5 µm wide, without basal clamps, 4-spored.

Spores ellipsoidal, smooth, hyaline, thin-walled, with an almost imperceptible apiculus at one end, inamyloid in Melzer's reagent.

Herbarium material available: JTP2439/25.