2 to 12cm in diameter; convex becoming flattened with age. Incurved margin becoming decurved with age. Flesh thinner at the margin. Small fibrillose scale covering; variable colors: purple-red fading to yellow or pink in places. May develop green (sometimes blue) spots Gymnopilus luteofolius Spores.
Notched to adnate. Pale yellow turning darker with maturity; eventually, rusty brown as spores develop. Young gills covered by thin and partial veil.
3 to 10cm tall; 5mm thick. Usually equal but maybe larger at same. Flimsy ring. Same color as cap.
Mild and not distinctive.
Warted spores; elliptical
Rusty brown to orangey brown.
Reports are that it is hallucinogenic if eaten.
Saprotrophic. Grows on woodchips, hardwoods and conifers; can be found in dense clusters. Summer to Winter, depending on location. Distributed widely in North America. Found in Eastern and Western areas also.