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Clitocybe flavidella

[Basidiomycetes > Agaricales > Tricholomataceae > Clitocybe...]

by Michael Kuo

In the seemingly endless parade of boring little clitocyboid mushrooms, Clitocybe flavidella is the fourth kid from the left in the third row of the middle school band. What? You can't tell them apart? Look for the one with the butterscotch cap that fades to buff, the lined cap margin, the clarinet, the pure white spore print, and the 4-6 µ long spores, marching under conifers in late fall. See the comments below if you need help identifying other kids in the band.

Similar conifer-loving species with butterscotch caps are numerous, and include Clitocybe coniferophila, with spores measuring 5-8 x 3-4 µ, a creamy to pale yellow spore print, and encrusted pileipellis pigment; Clitocybe pinophila, with a mealy odor and taste; Clitocybe subcanescens, with a pinkish buff spore print and a non-lined cap margin; and Clitocybe glutiniceps, with a slimy cap.


Ecology: Saprobic; growing gregariously or in small clusters in conifer duff; September through November; distribution uncertain, but possibly widely distributed east of the Rocky Mountains.

Cap: 1-3.5 cm; convex with an inrolled margin, becoming flat or centrally depressed, with an even to wavy margin; bald; moist when fresh; butterscotch, fading markedly to buff as it dries out; the margin finely lined at maturity.

Gills: Broadly attached or just beginning to run down the stem; close or nearly distant; buff.

Stem: 2-4 cm long; up to 4 mm thick; more or less equal; moist when fresh; bald or with a whitish sheen over the upper half; butterscotch to buff above, and brownish toward the base; hollowing.

Flesh: Insubstantial; watery buff.

Odor and Taste: Not distinctive.

Chemical Reactions: KOH on cap surface negative.

Spore Print: Pure white.

Microscopic Details: Spores 4-6 x 2.5-3.5 µ; ellipsoid; smooth; inamyloid. Cystidia absent. Pileipellis a slightly gelatinized cutis of elements 1.5-4 µ wide, with yellowish intracellular pigment. Clamp connections present.

REFERENCES: (Peck, 1878) Saccardo, 1887. (Bigelow, 1982.) Herb. Kuo 11050403.

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


Clitocybe flavidella

Clitocybe flavidella

Clitocybe flavidella

Clitocybe flavidella

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Kuo, M. (2010, May). Clitocybe flavidella. Retrieved from the MushroomExpert.Com Web site: