Infundibulicybe gibba

A very abundant autumn species with an infundibuliform cap occurring under both conifers and deciduous trees.

Pileipellis filamentous, composed of hyphae arranged parallelly to very slightly interwoven, 3-8 µm wide, with faint brownish intracellular pigment, septate with clamped septa.

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

Basidia cylindric-clavate, 23-30 µm long and 6-7 µm wide, with basal clamps, 4-spored.

Spores ellipsoidal to amygdaliform, smooth, hyaline, thin-walled, with a pronounced curved apiculus at one end, containing small internal oil droplets, inamyloid in Melzer's reagent.

Herbarium material available: JTP2252/24.