| Name | Sagittaria latifolia f. gracilis (Pursh) Britton |
| Authorship | (Pursh) Britton |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Sagittaria latifolia Willdenow |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sagittaria latifolia f. gracilis (Pursh) Britton |
| Identification made in | 1932 (2) |