| Name | Potamogeton ×subobtusus Hagström |
| Authorship | Hagström |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Potamogeton |
| Citation | 1916 Kongl. Svenska Vetensk. Acad. Handl. 55(5): 147 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Potamogeton ×subobtusus Hagström |
| Identification made in | 1942 (1), 2012 (1) |
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