| Alga Adans., 1763 |
| Alga marina (L.) Lam., 1779 |
| Algoides Lunell, 1915 |
| Algoides palustre (L.) Lunell, 1915 |
| Buccaferrea P. Micheli ex Petagna, 1787 |
| Buccaferrea maritima (L.) Lunell, 1915 |
| Coleogeton Les & R.R. Haynes, 1996 |
| Coleogeton pectinatus (L.) Les & R.R. Haynes, 1996 |
| Coleogeton striatus (Ruiz & Pav.) Les & R.R. Haynes, 1996 |
| Diplanthera Thouars, 1806 |
| Diplanthera beaudettei Hartog, 1960 |
| Diplanthera dawsonii Hartog, 1960 |
| Diplanthera wrightii (Asch.) Asch., 1897 |
| Phucagrostis Cavolini, 1792 |
| Phucagrostis manatorum (Asch.) Kuntze, 1891 |
| Potamogeton L., 1753 |
| Potamogeton americanus Cham. & Schltdl., 1827 |
| Potamogeton americanus var. novaeboracensis (Morong) A. Benn., 1893 |
| Potamogeton amplifolius Tuck., 1848 |
| Potamogeton amplifolius f. amphibius A. Benn., 1904 |