| Name | Potamogeton longiligulatus Fernald |
| Authorship | Fernald |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Potamogeton |
| GUID | urn:lsid:ipni.org:names:699723-1 |
| Citation | 1932 Mem. Gray Herb. 3: 66 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Potamogeton longiligulatus Fernald |
| Identification made in | [no date] (2), 1973 (1), 1983 (1), 2012 (2) |