| Name | Potamogeton tenuifolius var. subellipticus (Fernald) Fernald |
| Authorship | (Fernald) Fernald |
| Rank | Variety |
| Placed in | Potamogeton tenuifolius Rafinesque |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Potamogeton tenuifolius var. subellipticus (Fernald) Fernald |
| Identification made in | 1931 (1) |
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