Gymnopilus aeruginosus

Gymnopilus aeruginosus, also known as the Magic Blue Gym, is a mushroom which grows in clusters on dead wood and wood chip mulch. It is widely distributed and common in the Pacific Northwest. It has a rusty orange spore print and a bitter taste and contains the hallucinogen psilocybin. It was given its current name by mycologist Rolf Singer in 1951.