Calamagrostis inexpansa
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Poaceae
- genus: Calamagrostis
- species: Calamagrostis inexpansa
Fort Saskatchewan- Provost
- Red Deer
Alberta- Yellowknife
Northwest Territories- Havre-Saint-Pierre
Quebec
Canada
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Saint Pierre And Miquelon
Dutch Harbor- Unalaska
Alaska- Sacramento
California- Thornton
Illinois- Manistique
Michigan- Minden
Nebraska
United States