| Name | Potamogeton gramineus f. maximus Morong ex Bennett |
| Authorship | Morong ex Bennett |
| Rank | Forma |
| Placed in | Potamogeton gramineus Linnaeus |
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| Name | Potamogeton gramineus f. maximus Morong ex Bennett |
| Authorship | Morong ex Bennett |
| Rank | Forma |
| Placed in | Potamogeton gramineus Linnaeus |