Rickenella swartzii

Appearance

Pileus
Cap 4-12 mm broad, convex, expanding to nearly plane, sometimes centrally depressed to infundibuliform; margin decurved, then level, occasionally wavy; surface moist, not viscid, pellucid-striate, pruinose when young (use hand lens), dark brown at the disc, pale-tan towards the margin; context thin, < 1 mm, watery light-brown, unchanging; odor and taste mild.

Lamellae
Gills decurrent, fairly well-spaced, at first whitish, then cream-colored, edges even; lamellulae in up to three series.

Stipe
Stipe 1.5-4.0 cm long, approximately 1 mm thick, round, equal except enlarged at the apex; surface like the cap, pruinose, especially at the apex, becoming nearly glabrous with age and handling; color dark vinaceous-brown to bluish-black at the apex, pale buff-orange below; partial veil absent.

Spores
Spores 4.0-5.5 (6) x 2.5-3.5 µm, elliptical in face-view, similar in profile but slightly inequilateral, smooth, thin-walled, contents granular, hilar appendage well developed, inamyloid; spores whitish in deposit; angular crystals present in mounts of gill tissue.

Naming

Mycena swartzii

Habitat

Scattered to gregarious in moist, shaded locations, typically in moss beds; known from coastal forests in the fall