Hygrophorus discoxanthus

A Hygrophorus typical of beech forests, whose flesh turns brownish-yellow upon application of KOH.

Pileipellis composed of cylindrical filamentous hyphae, 3-6 µm wide; the outermost hyphae widely separated by gelification, underlain by a more compacted layer of hyphae arranged more or less parallelly to slightly interwoven, with some undulations and branching, with faint brownish intracellular pigment and clamp connections at the septa.

Gill edge fertile, without differentiated cystidia.

Lamellar trama bilateral.

Basidia clavate, 30-50 µm long and 6-8 µm wide, with basal clamps, 4-spored.

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