Gymnopilus magnus
- kingdom: Fungi
- phylum: Basidiomycota
- class: Agaricomycetes
- order: Agaricales
- family: Strophariaceae
- genus: Gymnopilus
- species: Gymnopilus magnus
- Brookfield
- La Grange Park
- North Riverside
- Riverside
Illinois- Harrison
- Larchmont
- Mamaroneck
New York- Boalsburg
Pennsylvania
United States