Gymnopilus braendlei

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Gymnopilus braendlei is a mushroom in the Hymenogastraceae family. It contains the hallucinogens psilocybin and psilocin, so it is psychoactive and should not be eaten. It was first described by mycologist Charles Horton Peck as Flammula braendlei from specimens found in Washington, D.C., in 1902 and was later named Gymnopilus braendlei by Singer in 1951. This fungus grows on tree stumps, solo or in small clusters, from June to November. It is common in the eastern United States and is also found in the western United States.

Key features:
- Habitat: saprotrophic on tree stumps
- Growth form: solitary or cespitose
- Cap: convex
- Gills: adnexed or adnate
- Spore print: yellow-orange