| Name | Nuphar polysepala Engelmann |
| Authorship | Engelmann |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Nuphar Smith |
| GUID | urn:lsid:ipni.org:names:1021676-2 |
| Citation | 1866 Trans. Acad. Sci. St. Louis 2: 282 |
| Holdings | 97 Specimens held in the Harvard University Herbaria identified as Nuphar polysepala Engelmann |
| Identification made in | [no date] (95), 1985 (1), 1998 (1) |
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