roundleaf thoroughwort
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Eupatorium
- species: Eupatorium rotundifolium
Auburn- Mobile
- Point Clear
- Wedowee
Alabama- Danbury
- Meriden
- New Haven
- Newtown
- Poquonock Bridge
- Windsor Locks
Connecticut- Ocean View
Delaware- Cairo
Georgia- Baden
- Baltimore
- Beltsville
- Berwyn Heights
- Bladensburg
- Brentwood
- Cabin John
- Calverton
- Cambridge
- Capitol Heights
- Cheverly
- Chillum
- College Park
- Colmar Manor
- Coral Hills
- Cottage City
- Deale
- East Riverdale
- Edmonston
- Fairmount Heights
- Federalsburg
- Fort George G Mead Junction
- Fort Washington
- Goddard
- Hyattsville
- Jessup
- Langley Park
- Lanham
- Laurel
- Mount Rainier
- New Carrollton
- Princess Anne
- Riverdale Park
- Seabrook
- Silver Spring
- Takoma Park
- University Park
Maryland- Washington, D. C.
Washington, D.C.
United States