| Family | Hydrocharitaceae |
| Scientific name | Egeria najas Planchon |
| Synonyms | Anacharis hilariana Caspary; Anacharis naias (Planchon) Victorin; Elodea guyannensis Richard forma longifolia Chodat & Hassler; Elodea kochii Herter; Elodea najas (Planchon) Caspary; Elodea paraguayensis Herter |
| Common name | (English common name) none |
| (Japanese common name) none | |
| Distribution | Brazil, Argentina, Paraguay, Uruguay |
| Reference | Egeria najas Planch. |
| Caracterizacao genetica de acessos de egeria (Egeria spp.) coletados no estado de Sao Paulo utilizando RAPD |
| January 2009 at Tsukuba Botanical Garden |
January 2009 at Tsukuba Botanical Garden |