Schizophyllum amplum

In riparian woodland on very damp decaying wood on the ground, with disciform to cupulate basidiomes, sessile, 0.3 to 1 cm across, interior cream to brownish with folds, exterior whitish to pale cream.

Outer surface hyphae hair-like, hyaline, thick-walled, cylindrical, straight to slightly sinuous, up to 200 µm long, 3 to 6 µm wide, with clamp connections and surface covered with fine calcium oxalate encrustations.

Context with filamentous, cylindrical, hyaline, thick-walled hyphae, 2 to 3 µm in diameter, profusely branched, septate with prominent clamp connections at the septa.

Cystidia and other sterile hymenial elements absent.

Basidia cylindrical to subclavate, 30 to 40 µm long, 4 to 6 µm wide, with basal clamp connections and four-spored.

Spores cylindrical, slightly allantoid, smooth, hyaline, thin-walled, 7 to 10 µm long, 2.5 to 3.5 µm wide, with an eccentric apiculus at one end, homogeneous contents, and inamyloid in Melzer's reagent.