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Infundibulicybe (Clitocybe) gibba

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

by Michael Kuo

Infundibulicybe gibba is a hardwood-loving clitocyboid mushroom that features a pinkish tan cap that becomes fairly deeply vase-shaped by maturity. Its pale, crowded gills run down the stem, which is pale in comparison to the cap. Other distinctive features include the white mycelium on the stem base and, usually, a faintly sweet odor.

The very similar Infundibulicybe squamulosa is found under conifers and features a somewhat darker cap, a stem that is colored like the cap, and slightly smaller spores. A giant version of this species, Clitocybe maxima, is found in the Rocky Mountains and westward.

Clitocybe gibba is a well known synonym. 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; primarily found under hardwoods (especially oaks) but sometimes reported under conifers; summer and fall (winter and spring in California); widely distributed in North America.

Cap: 3-9 cm; at first flat or with a central depression, becoming deeply vase-shaped; smooth; dry or slightly tacky; tan, pinkish tan, or flesh-colored; fading with age; sometimes with a wavy margin in maturity.

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

Stem: 2.5-8 cm long; up to 1 cm thick; equal; dry; fairly smooth; whitish, off-white, or a very pale version of the cap color; base often covered with white mycelium.

Flesh: Thin; whitish.

Odor and Taste: Taste mild; odor not distinctive or sweet.

Spore Print: White.

Microscopic Details: Spores 5-9 x 3.5-6 µ; lacrymoid; smooth; inamyloid. Cystidia absent. Pileipellis of interwoven cylindric hyphae 2-7 µ wide, with encrusting pigment. Clamp connections present.

REFERENCES: (Persoon, 1801) Harmaja, 2003. (Fries, 1821; Smith, Smith & Weber, 1979; Bigelow, 1982; Arora, 1986; States, 1990; Lincoff, 1992; Metzler & Metzler, 1992; Kuyper, 1995; Evenson, 1997; Barron, 1999; Harmaja, 2003; Roody, 2003; McNeil, 2006; Miller & Miller, 2006.) Herb. Kuo 07100302.

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Clitocybe gibba

Clitocybe gibba

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