Gymnopus subnudus (Ellis ex Peck) Halling 1997
Looks like Gymnopus dichrous, but grows from leaf litter rather than sticks and logs. Cap red-brown to brown, wrinkled, lined in maturity. Gills whitish, somewhat distant, and attached becoming pinkish in age. Stem flares at apex. Bald above, velvety below. Buff becoming darker reddish-brown to black toward base with maturity. Taste bitter. It is in the Omphalotaceae family of the Agaricales order.