Major Groups > Gilled Mushrooms > Pale-Spored > Omphalinoid > Xeromphalina kauffmanii


Xeromphalina kauffmanii

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

by Michael Kuo

This tiny mushroom often fruits in stunning numbers on stumps and dead logs in hardwood forests. It has a white spore print, gills that run down the stem, and a wiry stem that is yellow above, and brownish below. On close inspection, the gills are often connected by many cross-veins--one of the defining features of the genus Xeromphalina.

The very similar Xeromphalina campanella appears on the wood of conifers and has slightly larger spores.


Ecology: Saprobic on the dead wood of hardwoods; growing in dense clusters (sometimes by the hundreds!) on stumps and logs, or occasionally in small clusters or even alone; spring and summer; widely distributed in eastern North America.

Cap: .5-2.5 cm; convex to broadly convex or flat overall, but with a deep central depression; bald; lined or pleated on the margin; brownish yellow, rusty, or yellowish, paler towards the margin; fading.

Gills: Running down the stem; more or less distant; with many cross-veins; pale yellow.

Stem: 1-4 cm long; 1-2 mm thick; more or less equal; rusty yellow above, darker brown below; smooth or finely hairy; rather wiry.

Flesh: Insubstantial.

Odor and Taste: Taste mild; odor not distinctive.

Spore Print: White.

Microscopic Features: Spores 4-6 x 2.5-3 µ; elliptical; smooth; faintly amyloid. Pleuro- and cheilocystidia fusiform to narrowly clavate; up to 27 x 8 µ. Caulocystidia clavate to fusiform; thin-walled. Clamp connections present.

REFERENCES: A. H. Smith, 1953. (Miller, 1968; Smith, Smith & Weber, 1979; Arora, 1986; Bessette, Miller, Bessette & Miller, 1995; Halling & Mueller, 2005; McNeil, 2006.) Herb. Kuo 05299502, 08270204.

Further Online Information:

Xeromphalina kauffmanii at Tom Volk's Fungi
Xeromphalina kauffmanii at Macrofungi of Costa Rica


Xeromphalina kauffmanii

Xeromphalina kauffmanii

Xeromphalina kauffmanii

Xeromphalina kauffmanii

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Kuo, M. (2002, September). Xeromphalina kauffmanii. Retrieved from the MushroomExpert.Com Web site: