| Name | Sagittaria graminea var. gracillima S. Watson |
| Authorship | S. Watson |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Sagittaria graminea Michaux |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sagittaria graminea var. gracillima S. Watson |
| Identification made in | [no date] (2) |
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