Hygrophorus eburneus

A species associated with beech forests on calcareous soils.

Pileipellis with a superficial layer of filamentous hyphae, 3-5 µm wide, widely separated by gelification; underlain by more compacted, interwoven hyphae up to 9 µm wide, septate with clamped septa.

Cystidia and other sterile hymenial elements absent.

Lamellar trama bilateral.

Basidia cylindric-clavate, 40-60 µm long and 7-9 µm wide, with basal clamps, 4-spored.

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