| Name | Sagittaria subulata var. gracillima (S. Watson) J. G. Smith |
| Authorship | (S. Watson) J. G. Smith |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Sagittaria subulata (Linnaeus) Buch |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sagittaria subulata var. gracillima (S. Watson) J. G. Smith |
| Identification made in | [no date] (1) |
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