Pellidiscus pallidus

A minute cyphelloid fungus with a cupulate habit, growing on very damp decaying wood, grass stems, and also on dead leaves, measuring only 0.5 to 2.5 mm in diameter, with a greyish internal hymenium and a densely hirsute, white external surface.

External hairs filiform, hyaline, septate, thin-walled, 50 to 180 µm long, 3 to 4.5 µm wide, with rounded apices.

Subhymenial hyphae cylindrical, hyaline, 3.5 to 5 µm wide, branched, septate with simple septa.

Cystidia or other sterile hymenial elements absent.

Basidia clavate, 20 to 27 µm long, 7 to 10 µm wide, simple-septate at the base (unclamped), 4-spored.

Spores ellipsoidal to amygdaliform, hyaline, thin-walled and delicately verruculose, 6 to 7.5 µm long, 3 to 4 µm wide, with an eccentric apiculus at one pole and containing lipid droplets (guttules) inside.