| Cassia tortuosa L.B. Sm. & B.G. Schub., 1939 |
| Cassia totonaca Sessé & Moc., 1893 |
| Cassia trichocraspedon Sandwith, 1936 |
| Cassia trichoneura Brandegee, 1915 |
| Cassia triflora Vahl, 1807 |
| Cassia tristicula Benth., 1823 |
| Cassia undulata Benth., 1840 |
| Cassia uniflora Mill., 1768 |
| Cassia unijuga Rose, 1899 |
| Cassia villosa Mill., 1768 |
| Cassia viscosa Kunth, 1823 |
| Cassia vogeliana Schltdl., 1838 |
| Cassia wislizeni A. Gray, 1852 |
| Cassia wrightii Gray, 1853 |
| Cassia xanthophylla (Britton & Rose) Lundell, 1937 |
| Cassia zygophylloides Taub., 1892 |
| Cassieae Bronn, 1822 |
| Cathartocarpus Pers., 1805 |
| Cathartocarpus excelsus (Kunth) G. Don, 1832 |
| Cathartocarpus fistula (L.) Pers., 1805 |