| Name | Sagittaria latifolia f. obtusa (Muhlenberg ex Willdenow) B. L. Robinson |
| Authorship | (Muhlenberg ex Willdenow) B. L. Robinson |
| Rank | Forma |
| Placed in | Sagittaria latifolia Willdenow |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Sagittaria latifolia f. obtusa (Muhlenberg ex Willdenow) B. L. Robinson |
| Identification made in | [no date] (3) |
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