Rickenella mellea

A species growing among moss, with a convex to umbilicate pileus 4 to 8 mm in diameter, yellowish brown to cream; decurrent lamellae; a cylindrical stipe enlarged at the lamellar attachment; lacking distinct odor or taste.

Cuticle formed by cylindrical, hyaline hyphae, 5 to 10 µm wide, with inflations up to 14 µm, septate and clamped.

Caulocystidia cylindrical with an enlarged base (lageniform), 50 to 65 µm long and 8 to 11 µm wide.

Cheilocystidia lageniform, some slightly capitate, 30 to 40 µm long and 5 to 7 µm wide.

Basidia subcylindrical to clavate, 20 to 25 µm long, 3.5 to 5 µm wide, with basal clamp connections and four-spored.

Spores cylindrical-ellipsoidal, smooth, hyaline, thin-walled, 6 to 7.5 µm long, 2.5 to 3.5 µm wide, with a discreet lateral apiculus at one end, containing one or more large oil droplets inside, and inamyloid in Melzer's reagent.

Herbarium material available: JTP2662/25.