| Sagittaria sagittifolia var. macrophylla Hook., 1840 |
| Sagittaria sagittifolia var. mexicana M. Martens & Galeotti, 1842 |
| Sagittaria sagittifolia var. variabilis (Engelm.) Micheli, 1881 |
| Sagittaria sellowiana Kunth, 1841 |
| Sagittaria seubertiana C. Mart., 1847 |
| Sagittaria simplex Pursh, 1813 |
| Sagittaria subulata (L.) Buchenau, 1871 |
| Sagittaria tenella (C. Mart.) Kuntze, 1898 |
| Sagittaria variabilis Engelm., 1848 |
| Sagittaria variabilis var. angustifolia Engelm., 1856 |
| Sagittaria variabilis var. diversifolia Engelm., 1856 |
| Sagittaria variabilis var. gracilis (Pursh) Engelm., 1856 |
| Sagittaria variabilis var. hastata (Pursh) Engelm., 1867 |
| Sagittaria variabilis var. latifolia (Willd.) Engelm., 1848 |
| Sagittaria variabilis var. obtusa Engelm., 1856 |
| Sagittaria variabilis var. sagittifolia (L.) Engelm., 1856 |