| Name | Sagittaria spongiosa (Engelmann) Werier |
| Authorship | (Engelmann) Werier |
| Rank | Species |
| Placed in | Sagittaria Linnaeus |
| Remarks | [confirmed] [imported from GBIF] |
| Citation | 2023 Phytotaxa 630: 94 |
| Holdings | 22 Specimens held in the Harvard University Herbaria identified as Sagittaria spongiosa (Engelmann) Werier |
| Identification made in | [no date] (22) |