River birch
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Fagales
- family: Betulaceae
- genus: Betula
- species: Betula nigra
- Göteborg
Västra Götaland
Sweden- Denver
Colorado- Middletown
- New Haven
Connecticut- Bourbonnais
- Bradley
Illinois- Galena
Kansas- Mount Airy
- Toast
North Carolina- Nashville
Tennessee- Washington, D. C.
Washington, D.C.
United States