| Cochlearia L., 1753 |
| Cochlearia draba L., 1759 |
| Cochlearia mexicana S. Watson, 1882 |
| Cochlearieae Buchenau, 1894 |
| Coelonema Maxim., 1880 |
| Coelophragmus O.E. Schulz, 1924 |
| Coelophragmus auriculatus (A. Gray) O.E. Schulz, 1924 |
| Coelophragmus umbrosus (B. L. Rob.) O.E. Schulz, 1924 |
| Coluteocarpeae V.I. Dorof., 2004 |
| Conringia Heist. ex Fabr., 1759 |
| Conringia orientalis (L.) Dumort., 1827 |
| Conringieae D.A. German & Al-Shehbaz, 2008 |
| Coronopus Zinn, 1757 |
| Coronopus didymus (L.) Sm., 1800 |
| Cotyliscus Desv., 1815 |
| Coulterina Kuntze, 1891 |
| Crambe L., 1753 |
| Crambe hispanica L., 1753 |
| Crambeae V.I. Dorof., 2004 |
| Cruciundula Raf., 1836 |