Great Plains flatsedge
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Cyperaceae
- genus: Cyperus
- species: Cyperus lupulinus
Wasaga Beach
Ontario
Canada
Norwalk
Connecticut- Wathena
Kansas- Arden on the Severn
- Berwyn Heights
- Bladensburg
- Brentwood
- Brookmont
- Cabin John
- Capitol Heights
- Chesapeake Beach
- Cheverly
- Chillum
- Clinton
- College Park
- Colmar Manor
- Coral Hills
- Cottage City
- District Heights
- Edmonston
- Fairmount Heights
- Federalsburg
- Ferndale
- Gambrills
- Glen Burnie
- Goddard
- Herald Harbor
- Hyattsville
- Lanham
- Maryland City
- Morningside
- Mount Rainier
- New Carrollton
- North Beach
- Seabrook
- Severna Park
- Suitland
- Takoma Park
- University Park
Maryland- Borough of Bronx
- Herkimer
- Manhattan
- Mohawk
New York- Westerly
Rhode Island- Washington, D. C.
Washington, D.C.
United States