Psathyrella petasiformis
- kingdom: Fungi
- phylum: Basidiomycota
- class: Agaricomycetes
- order: Agaricales
- family: Psathyrellaceae
- genus: Psathyrella
- species: Psathyrella petasiformis
Mountainhome
Pennsylvania
United States
Psathyrella petasiformis
Mountainhome