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Crinipellis setipes

[ Basidiomycetes > Agaricales > Tricholomataceae > Crinipellis . . . ]

by Michael Kuo

Rarely treated in field guides, this tiny mushroom is found on sticks and other woody debris of hardwoods in eastern North America. Its cap and stem are finely hairy, and the cap develops a dark central depression. It almost appears like a miniature version of Crinipellis zonata (which is already a pretty small mushroom), but it differs in its minute size, its reaction to KOH, and in microscopic details. Crinipellis piceae is a very similar species that grows on spruce needles.

Collybia stipitaria var. setipes is a former name.


Ecology: Saprobic; growing alone or gregariously on the woody debris of hardwoods (sticks, logs) or rarely on decaying leaves; summer and fall; widely distributed east of the Great Plains.

Cap: Minute to 1.5 cm across; convex or nearly flat; with a central depression that may feature a tiny bump; finely radially hairy; dry; yellowish brown to tan, becoming buff with a brownish center; becoming radially lined.

Gills: Free from the stem or narrowly attached to it; close; white; not discoloring.

Stem: 2-13 cm long; 0.5-3 mm thick; equal; dry; finely hairy; hollow; grayish brown to reddish brown; inserted directly into the substrate.

Flesh: Whitish in cap; insubstantial.

Odor and Taste: Odor not distinctive, or somewhat fragrant; taste not distinctive.

Chemical Reactions: KOH on cap surface negative.

Spore Print: White.

Microscopic Features: Spores 5-10 x 3-4.5 µ; smooth; elliptical; inamyloid. Pleurocystidia absent. Cheilocystidia of the "broom cell" type; more or less cylindric to subclavate, with 3-8 apical projections; up to about 30 x 10 µ. Pileipellis a densely tangled layer of dextrinoid, thick-walled, pointed hairs 2.5-7 µ wide. Clamp connections present.

REFERENCES: (Peck, 1896) Singer, 1942. (Kauffman, 1918; Singer, 1942; Barron, 1999; Kerekes & Desjardin, 2009; Bandala et al., 2012.) Herb. Kuo 06040803, 07030802.

This site contains no information about the edibility or toxicity of mushrooms.


Crinipellis setipes

Crinipellis setipes

Crinipellis setipes

Crinipellis setipes

Crinipellis setipes

Crinipellis setipes
Pileipellis: hairs

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Kuo, M. (2012, July). Crinipellis setipes. Retrieved from the MushroomExpert.Com Web site: