longleaf sunflower
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Asterales
- family: Asteraceae
- genus: Helianthus
- species: Helianthus longifolius
Washington, D. C.
Washington, D.C.
United States
longleaf sunflower Washington, D. C.