Sistotrema brinkmannii

On decaying polypores as well as on plant debris or wood on the ground, with resupinate basidiomes tightly adhering to the substrate, slightly granular or verrucose surface, white, occasionally with faint greyish or ochre flushes; waxy and powdery in consistency.

Hyphal system monomitic, with only hyaline generative hyphae, moderately thick-walled, 3 to 7 µm wide, profusely branched, septate with clamped septa.

Cystidia absent.

Basidia subcylindrical to urniform, 12 to 20 µm long, 4 to 6 µm wide, with basal clamp connections, bearing four, six, or eight sterigmata.

Spores cylindrical-ellipsoidal to allantoid, smooth, hyaline, thin-walled, with a slightly pointed end bearing the apiculus, 4 to 5.5 µm long, 2 to 3 µm wide, with minute oil droplets scattered inside, and inamyloid in Melzer's reagent (no reaction).

Herbarium material available: JTP2741/26.