Substrate: under hardwoods, especially oak and hickory
Conservation Status: Not of concern
Edibility: Not edible
Not edible
Cap: 2.5-12 cm wide, convex to broadly convex, often with a low, broad umbo, occasionally concave in age; surface dry, densely interwoven-fibrillose over the center and on the edge, elsewhere with interwoven-radiating fibrils, often with scattered squamules; pale medium gray overall, the disc occasionally fuscous-gray in age, occasionally virgate in place; margin incurved at first, expanded and sometimes wavy or eroded in age. Flesh: moderately thick; pale gray; odor not distinctive; taste hot and peppery, some tomes slowly so, or at times bitter. Gills: sinuate, close, broad; pale grayish overall or with fuscous-black edge, sometimes spotted fuscous-black; edges entire or sometimes eroded; lamellulae numerous. Stalk: 2.5-7.5 cm long, 1-2 cm thick, nearly equal, with rounded or slightly bulbous base, solid, silky-fibrillose, often pruinose at the apex; dull white.
Sources: Bessette, Alan E., Arleen R. Bessette, William C. Roody, and Steven A. Trudell. Trichoolomas of North America. Austin, University of Texan Press, 2013.
PNW Herbaria: Specimen records of Tricholoma acre in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Tricholoma acre photos