Cortinarius tubarius

Pileipellis with a thin outer layer of filamentous hyphae with abundant intracellular pigment and clamp connections; below this layer, broader hyphae with short cells, more hyaline and almost cellular in appearance.

Lamellar edge without clearly differentiated elements from basidia, but with some sterile cylindrical or vesiculose hairs.

Basidia clavate and 4-spored.

Spores ellipsoidal, very minutely verrucose-walled, very pale yellowish-brown under the microscope, with abundant minute darker warts across the surface, an inconspicuous lateral apiculus, and without significant reaction in Melzer's reagent.