Gymnopus foetidus

Pileipellis composed of filamentous hyphae, densely interwoven, up to 12 µm wide, septate and with prominent clamps.

Terminal hyphae on the upper stipe caulocystidia-like, cylindrical, slightly sinuous, with basal clamps.

Cheilocystidia scattered, inconspicuous, very scarce, barely projecting above the basidial level, difficult to observe, fusiform, up to 30 µm long.

Basidia cylindric-clavate, up to 30 µm long and 9 µm wide, with basal clamps, 4-spored.

Spores ellipsoidal, smooth, hyaline, thin-walled, with a very prominent eccentric apiculus at one end, vacuolar internal content, inamyloid in Melzer's reagent.