Western flat-topped agaric
- kingdom: Fungi
- phylum: Basidiomycota
- class: Agaricomycetes
- order: Agaricales
- family: Agaricaceae
- genus: Leucoagaricus
- species: Leucoagaricus meleagris
- Mont-Royal
- Saint-Laurent
Quebec
Canada- Malmköping
Södermanland
Sweden- Middle Island
New York
United States