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Xeromphalina campanella

[ Basidiomycetes > Agaricales > Tricholomataceae > Xeromphalina . . . ]

by Michael Kuo

The tiny yellowish to orange cap with a central depression, the gills running down the stem, the white spore print, and the growth pattern (in dense clusters on decaying conifer wood) distinguish Xeromphalina campanella. It is nearly impossible to separate from Xeromphalina kauffmanii, which grows in clusters on decaying hardwood logs--so, unless you are sure of the log's identity (conifer-hardwood-wise), you will need to measure spores to be sure which species you have found.


Ecology: Saprobic on the dead wood of conifers; typically in dense clusters on stumps and logs, but occasionally alone or gregariously; nearly year-round, especially in warmer climates; widely distributed in North America.

Cap: 5-25 mm across; convex, becoming broadly convex with a central depression and an arched margin; bald; dry; widely lined on the margin when wet; brownish yellow, rusty, yellowish, or orange; usually darker towards the center; fading.

Gills: Running down the stem; fairly distant; usually with many cross-veins; pale yellow or orangish.

Stem: 1-5 cm long; 1-3 mm thick; more or less equal; smooth; yellowish above, darker below; bald above, finely hairy at the base; rather wiry and tough; often curved.

Flesh: Insubstantial.

Odor and Taste: Taste mild; odor not distinctive.

Spore Print: White.

Microscopic Features: Spores 5-8 x 3-4 µ; smooth; elliptical; weakly amyloid. Pleuro- and cheilocystidia fusiform; up to 55 x 14 µ. Caulocystidia clavate to fusiform; up to 75 x 15 µ; thin-walled; hyaline in KOH. Clamp connections present.

REFERENCES: (Batsch, 1783) Maire, 1934. (Fries, 1821; Sacardo, 1887; Smith, 1949; Miller, 1968; Smith, Smith & Weber, 1979; Arora, 1986; States, 1990; Phillips, 1991/2005; Lincoff, 1992; Metzler & Metzler, 1992; Barron, 1999; Roody, 2003; McNeil, 2006; Miller & Miller, 2006.) Herb. Kuo 05130301, 08120303, 10200702.

Further Online Information:

Xeromphalina campanella at MykoWeb
Xeromphalina campanella at Roger's Mushrooms


Xeromphalina campanella

Xeromphalina campanella

Xeromphalina campanella

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Kuo, M. (2003, August). Xeromphalina campanella. Retrieved from the MushroomExpert.Com Web site: