| Major Groups > Gilled Mushrooms > Pale-Spored > Collybioid > Gymnopus acervatus |
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Gymnopus acervatus [ Basidiomycetes > Agaricales > Tricholomataceae > Gymnopus . . . ] by Michael Kuo Defining features for Gymnopus acervatus include the densely clustered growth on the wood of conifers; the convex (not conical) reddish brown caps that fade to pinkish buff; and the reddish to reddish brown stem that is smooth except for the slightly fuzzy base. Older specimens demonstrate a marked contrast between the pale caps and the reddish stems. Gymnopus acervatus should not be eaten. Description: Ecology: Saprobic; growing in dense clusters on conifer stumps (and sometimes from buried conifer wood, appearing terrestrial); summer and fall, or in winter in Texas and California; fairly widely distributed in North America but apparently absent or rare in southwestern and southeastern areas. Cap: 1-5 cm; convex, becoming planoconvex; smooth; reddish brown and moist when young and fresh, but soon fading to brownish or pinkish buff (often passing through a two-toned stage). Gills: Attached to the stem broadly or narrowly; close or crowded; whitish when young, developing pink tones. Stem: 2-12 cm long; up to about 6 mm thick; more or less equal; dry; hollow; smooth except for whitish fuzz near the base; reddish brown to purplish brown; not fading as quickly as the cap. Flesh: Thin; whitish. Odor and Taste: Odor not distinctive; taste mild or bitter. Spore Print: White. Microscopic Features: Spores: 5.5-7 x 2.5-3 µ; smooth; elliptical or nearly cylindric; inamyloid. Pleurocystidia absent. Cheilocystidia up to about 40 µ long; variously shaped; often with protrusions or lobes. Pileipellis a tangle of cylindric, branching (but not diverticulate or coralloid) hyphae 2-5 µ wide. Collybia acervata is a synonym. REFERENCES: (Fries, 1821) Murrill, 1916. (Saccardo, 1887; Kauffman, 1918; Smith, Smith & Weber, 1979; Arora, 1986; Phillips, 1991/2005; Lincoff, 1992; Barron, 1999; Halling, 2004; McNeil, 2006; Miller & Miller, 2006.) Further Online Information: Gymnopus acervatus at Roy Halling's Collybia site |
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Cite this page as: Kuo, M. (2008, May). Gymnopus acervatus. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/gymnopus_acervatus.html |