| Name | Elodea ernstae H. St. John |
| Authorship | H. St. John |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Elodea |
| Citation | 1963 Darwiniana 12(4): 644 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Elodea ernstae H. St. John |
| Identification made in | [no date] (1) |