|Major Groups > Gilled Mushrooms > Pale-Spored > Collybioid > Xeromphalina tenuipes|
by Michael Kuo
Xeromphalina tenuipes is a late-spring, early-summer species from eastern North America's hardwood forests. It is easily overlooked--especially since its caps are fairly small and orangish brown, like the caps of many boring little mushrooms. But close examination in this case reveals a gorgeously fuzzy stem surface, along with cool microscopic features.
Ecology: Saprobic on the deadwood and woody debris of hardwoods; growing scattered to gregariously, or in loose clusters; often appearing not only on fallen logs but also in terrestrial troops alongside the logs and woody debris; late spring and early summer; widely distributed in North America east of the Rocky Mountains, south to Central America. The illustrated and described collection is from Indiana.
Cap: 2.5-4.5 cm across; convex to broadly convex or flat; finely granular-velvety, or nearly bald; dry; becoming finely lined; brownish orange, often with a darker center.
Gills: Notched at the point of attachment to the stem; close; often forked and cross-veined; whitish to yellowish; short-gills frequent.
Stem: 3-7.5 cm long; 2-4 mm thick; more or less equal; dry; densely and finely hairy; golden orangish, darkening to brown from the base upward; fairly tough.
Flesh: Insubstantial; brownish.
Odor and Taste: Odor not distinctive; taste bitter.
Chemical Reactions: KOH dark reddish brown on cap surface.
Spore Print: White.
Microscopic Features: Spores 6-8 x 3.5-4.5 µ; ellipsoid; smooth; faintly to moderately amyloid. Pleurocystidia clavate to fusiform. Cheilocystidia narrowly clavate. Caulocystidia more or less cylindric; thick-walled. Pileipellis with reddish brown pileocystidia in fascicles.
REFERENCES: (Schweinitz, 1887) A. H. Smith, 1953. (Saccardo, 1887; Miller, 1968; Smith, Smith & Weber, 1979; Phillips, 1991/2005; Bessette, Miller, Bessette & Miller, 1995; Barron, 1999; Roody, 2003; McNeil, 2006; Kuo & Methven, 2014.) Herb. Kuo 05121203.
Further Online Information:
Cite this page as:
Kuo, M. (2014, November). Xeromphalina tenuipes. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/xeromphalina_tenuipes.html