Key Features

Mushroom trumpetlike when young, petunia-shaped when older; cap with a central hollow extending nearly to base of stalk. Cap black when moist, brown in dry weather. Underside of cap gray, smooth to very slightly wrinkled but without gills or prominent veins. Flesh tough, thin, not gelatinous. Stalk gray, brown, or black (not yellow or orange). Other Features: Medium-sized (mostly 2-5" high); edge of cap turned down when young, then unfurling and often wavy or frilly in age; flesh dark; stalk hollow; spores whitish to yellowish.