| 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 |
| Scoliaxon mexicanus (S. Watson) Payson, 1924 |
| Scoliaxoneae Al-Shehbaz & Warwick, 2011 |
| Selenia Nutt., 1825 |
| Selenia dissecta Torr. & A. Gray, 1855 |
| Selenia mexicana Standl., 1937 |
| Senckenbergia P. Gaertn., B. Mey. & Scherb., 1800 |
| Senebiera DC., 1799 |
| Senebiera didyma (L.) Pers., 1807 |
| Senebiera heleniana DC., 1821 |