slender fimbristylis
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Cyperaceae
- genus: Fimbristylis
- species: Fimbristylis autumnalis
Brasília
Federal District- Ladário
Mato Grosso do Sul- Belo Horizonte
Minas Gerais- Guaratuba
Paraná- Lages
Santa Catarina
Brazil
Pueblo Nuevo Tiquisate
Escuintla
Guatemala
Dauphin Island- Prattville
Alabama- Bourbonnais
- Bradley
- Chicago
- Glenwood
- Thornton
Illinois- Grambling
- Saint Gabriel
Louisiana- Beltsville
- Berwyn Heights
- Bladensburg
- Brentwood
- Cabin John
- Charlotte Hall
- Chillum
- Clinton
- College Park
- Colmar Manor
- Cottage City
- East Riverdale
- Easton
- Edmonston
- Emmitsburg
- Forest Glen
- Gambrills
- Goddard
- Havre de Grace
- Hyattsville
- Kensington
- Lanham
- Marlboro Meadows
- Mount Rainier
- New Carrollton
- North Kensington
- Ocean Pines
- Perryville
- Riverdale Park
- Seabrook
- South Kensington
- Takoma Park
- University Park
- Wheaton
Maryland- Montauk
New York- Anderson
South Carolina- Washington, D. C.
Washington, D.C.
United States