Kavinia alboviridis

Resupinate basidiomes with a hydnoid hymenophore, spines up to 2.5 mm tall, cream-colored, with a whitish cottony growing margin.

Monomitic hyphal system composed of hyaline generative hyphae, thin- to moderately thick-walled, 3-6 µm wide, with faint hyaline surface incrustations, septate with clamped septa.

Cystidia absent.

Basidia clavate, 25-35 µm long and 5-7 µm wide, with basal clamps, 4-spored.

Spores ellipsoidal, verruculose, slightly thick-walled, yellowish-brown under the microscope, inamyloid in Melzer's reagent.