Potamogeton polygonus
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Alismatales
- family: Potamogetonaceae
- genus: Potamogeton
- species: Potamogeton polygonus
Castro
Paraná- Guapimirim
- Itatiaia
Rio de Janeiro- Capâo Bonito
São Paulo
Brazil