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Crepidotus vulgaris

[ Basidiomycetes > Agaricales > Crepidotaceae > Crepidotus . . . ]

by Michael Kuo

Although its Latin species name means "common Crepidotus," this mushroom is not commonly featured in field guides--perhaps because identifying it requires extensive microscopic analysis. It is one of many whitish, tiny Crepidotus species found on sticks and logs--and it is apparently fairly widely distributed on our continent; Hesler & Smith, who named the species, cite many collections from eastern North America as well as a collection from Washington.


Ecology: Saprobic; growing gregariously or in overlapping clusters on sticks and small logs of hardwoods or conifers; spring through fall; widely distributed in eastern North America, and reported from Washington.

Cap: .5-2 cm across (rarely up to 4 cm); shell-shaped or fan-shaped; densely but finely hairy; white to whitish.

Gills: Radiating from the point of attachment; close or nearly distant; whitish, becoming brownish in maturity.

Stem: Absent, but a tiny pseudo-stem is occasionally present.

Flesh: Soft; thin; whitish.

Odor and Taste: Odor not distinctive; taste mild.

Spore Print: Brown.

Microscopic Features: Spores 5-8 x 4-5.5 µ; elliptical; very finely punctate or roughened (often hard to discern even with oil immersion). Pleurocystidia absent. Cheilocystidia clavate, cylindric, submucronate, or somewhat amygdaliform and swollen (but not elaborately contorted, twisted, or curled); up to 50 x 10 µ. Pileipellis a cutis of mostly repent, hyaline to faintly brownish elements 2.5-5 µ wide; clamp connections present at septa.

REFERENCES: Hesler & Smith, 1965. (McNeil, 2006.) Herb. Kuo 05280701.

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


Crepidotus vulgaris

Crepidotus vulgaris

Crepidotus vulgaris

Crepidotus vulgaris

Crepidotus vulgaris

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Kuo, M. (2009, April). Crepidotus vulgaris. Retrieved from the MushroomExpert.Com Web site: