Fistulina hepatica

Monomitic hyphal system, with hyaline, thin-walled suprapellis hyphae with numerous simple septa, faint ochraceous intracellular pigment, and rounded terminal ends coated with amorphous resinous encrustations; tramal hyphae hyaline and clamped.

No hymenial cystidia, but tube margins bear cylindrical, thin-walled terminal elements up to 70 µm long.

Basidia clavate, 15 to 20 µm long, with basal clamp connections, 4-spored.

Spores ovoid to amygdaliform, smooth, thick-walled, with a prominent apiculus, a large internal lipid guttule, inamyloid in Melzer's reagent.