Mica Cap (Common Inky)
Bell-shaped, tawny brown, radially lined cap; inky gills. Grows in clusters around stumps or on wood debris. April–October. Cap egg-shaped, becoming bell-shaped; tawny brown, darkening with age; covered with shiny, micalike granules when young; with age, cap and gills become inky and liquefy. Gills broad; spacing close; white, becoming dark brown, then inky black; gills attached. Stalk thick; white, discoloring to buff; smooth, sometimes like felt; fragile, hollow. Universal veil leaves shiny, micalike granules on cap when young, but these disappear quickly. Spore print dark brown to black. Spores magnified are elliptical, smooth, with small pore at tip.
Lookalikes: The alcohol inky (Coprinopsis atramentaria) is fleshier and grayish.