| Rorippa palustris var. pacifica (Howell) G.N. Jones, 1936 |
| Rorippa palustris var. palustris (L.) Besser, 1822 |
| Rorippa palustris var. williamsii (Britton) Hultén, 1945 |
| Rorippa pinnata (Sessé & Moc.) Rollins, 1960 |
| Rorippa ramosa Rollins, 1961 |
| Rorippa sinuata (Nutt.) Hitchc., 1894 |
| Rorippa sphaerocarpa (A. Gray) Britton, 1894 |
| Rorippa tenerrima Greene, 1895 |
| Rorippa teres (Michx.) Stuckey, 1966 |
| Rorippa teres var. rollinsii Stuckey, 1972 |
| Rorippa teres var. teres (Michx.) Stuckey, 1966 |
| Rorippa walteri (Elliott) C. Mohr, 1897 |
| Rorippa williamsii Britton, 1901 |
| Schelhameria Heist. ex Fabr., 1759 |
| Schelhammera R. Br., 1810 |
| Schivereckia Andrz. ex DC., 1821 |
| Schoenocrambe Greene, 1896 |
| Schoenocrambe linearifolia (A. Gray) Rollins, 1982 |
| Schrankia Medik., 1792 |
| Scoliaxon Payson, 1924 |