Ludwigia densiflora
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Myrtales
- family: Onagraceae
- genus: Ludwigia
- species: Ludwigia densiflora
Boca do Acre
Amazonas- Itupiranga
Pará- Guajará Mirim
Rondônia
Brazil