Sagittaria chapmanii
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Alismatales
- family: Alismataceae
- genus: Sagittaria
- species: Sagittaria chapmanii
Bayou La Batre- Cottonwood
- Dauphin Island
- Mobile
Alabama- South Highpoint
Florida
United States