marsh flat sedge
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Cyperaceae
- genus: Cyperus
- species: Cyperus pseudovegetus
Cullman- Dauphin Island
- Prattville
Alabama- Delmar
Delaware- Fort Lauderdale
- Wilton Manors
Florida- Temple
Georgia- Brookmont
- Cabin John
- Cambridge
- Denton
- Easton
- Federalsburg
Maryland- Colonial Beach
- Loch Lomond
- Manassas Park
- Yorkshire
Virginia- Washington, D. C.
Washington, D.C.
United States