purpletop
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Poaceae
- genus: Tridens
- species: Tridens flavus
Cullman- Mobile
- Tuscaloosa
Alabama- Bethany Beach
- Georgetown
- Ocean View
Delaware- Lombard
- Thornton
- Villa Park
Illinois- Bloomington
Indiana- Mandeville
- Ruston
Louisiana- Beltsville
- Bladensburg
- Brentwood
- Brookmont
- Cabin John
- Calverton
- Cheverly
- Chevy Chase
- Chevy Chase Village
- Chillum
- Colmar Manor
- Cottage City
- Easton
- Edmonston
- Forest Heights
- Fort George G Mead Junction
- Fort Washington
- Friendship Village
- Glassmanor
- Green Haven
- Hyattsville
- Oxon Hill
- Savage
- Somerset
- Takoma Park
Maryland- Gulf Park Estates
Mississippi- Thorndale
Pennsylvania- Washington, D. C.
Washington, D.C.
United States