Infundibulicybe geotropa

A large autumn species found in various habitats under both conifers and deciduous trees.

Pileipellis composed of hyaline, thin-walled hyphae irregularly interwoven, 3-6 µm wide, septate with clamp connections at the septa.

Gill edge fertile, without differentiated elements from basidia (cystidia absent).

Basidia clavate, 40-45 µm long and 7-9 µm wide, with basal clamps, 4-spored.

Spores subglobose to pyriform, smooth, hyaline, thin-walled, with a slightly eccentric pointed end bearing the apiculus, containing granular internal content, inamyloid in Melzer's reagent.