Grifola frondosa

Dimitic hyphal system, with skeletal hyphae abundant in the context, moderately thick-walled, 3-6 µm wide, simple or sparingly branched, aseptate; generative hyphae more abundant in the trama, hyaline, thin-walled, branched, 2.5-5 µm wide, septate and with clamp connections at the septa.

Cystidia and other sterile hymenial elements absent.

Basidia clavate, up to 30 µm long, without basal clamps, 4-spored.

Spores ovoid to ellipsoidal, smooth, hyaline, thin-walled, with an eccentric apiculus at one end, one or more oil droplets inside, inamyloid in Melzer's reagent.