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Infundibulicybe (Clitocybe) squamulosa

[Basidiomycetes > Agaricales > Tricholomataceae > Infundibulicybe...]

by Michael Kuo

Better known as Clitocybe squamulosa, this clitocyboid mushroom appears under conifers, primarily in northern and montane North America. It is quite similar to Infundibulicybe gibba, which grows under hardwoods, but the colors of Infundibulicybe squamulosa are somewhat darker, especially on the stem. According to Bigelow (1985) the typical variety is limited to eastern North America, and is replaced in the west by var. montana and var. sicca, which are separated microscopically.

The relatively recent genus Infundibulicybe was established to reflect the fact that DNA studies have placed this mushroom and closely related species far from other Clitocybe species. See Harmaja 2003, and Redhead and collaborators 2002 for further information.


Ecology: Saprobic; growing alone, scattered or gregariously; under conifers on moss or needles; spring through fall; fairly widely distributed in North America--but see above for varietal differences.

Cap: 2-11 cm; at first flat or with a central depression, becoming deeply vase-shaped; smooth or with fine fibers or scales; dry or slightly tacky; brown, cinnamon brown, or dark tan; fading with age; sometimes with a wavy margin in maturity.

Gills: Running down the stem; close or nearly distant; white or pale cream.

Stem: 3-7 cm long; up to 1 cm thick; equal; dry; fairly smooth; colored like the cap; base often covered with white mycelium.

Flesh: Thin; whitish or watery.

Odor and Taste: Not distinctive, or faintly foul or mealy.

Spore Print: White.

Microscopic Details: Spores 5-7.5 x 3-4.5 µ; elliptical to lacrymoid; smooth; inamyloid (in var. montana polymorphic and variable in size, ranging from elliptical to lacrymoid or subcylindric, 5.5-17 x 3-5.5 µ; in var. sicca elliptical, 7-9 µ long). Cystidia absent. Clamp connections present.

REFERENCES: (Persoon, 1801) Harmaja, 2003. (Fries, 1821; Saccardo, 1887; Bigelow, 1985; Kuyper, 1995; Harmaja, 2003; McNeil, 2006.)

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


Clitocybe squamulosa
Infundibulicybe squamulosa var. squamulosa in Quebec

Clitocybe squamulosa
Infundibulicybe squamulosa var. montana in Colorado

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Kuo, M. (2008, April). Infundibulicybe (Clitocybe) squamulosa. Retrieved from the MushroomExpert.Com Web site: