Ludwigia rigida
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Myrtales
- family: Onagraceae
- genus: Ludwigia
- species: Ludwigia rigida
Macapá
Amapá- Novo Aripuanã
Amazonas- Brasília
Federal District- Caiapônia
Goiás
Brazil
Puerto Carreño
Vichada
Colombia
Buenos Aires- Esparza
Puntarenas
Costa Rica