| Chilopsis linearis var. linearis (Cav.) Sweet, 1823 |
| Chodanthus Hassl., 1906 |
| Chodanthus puberulus Seibert, 1940 |
| Clytostoma Miers ex Bureau, 1868 |
| Clytostoma binatum (Thunb.) Sandwith, 1937 |
| Clytostoma elegans Standl., 1935 |
| Clytostoma floridum Miers ex Bureau & K. Schum., 1896 |
| Clytostoma isthmicum Pittier, 1917 |
| Clytostoma mayanum Standl., 1935 |
| Clytostoma noterophilum (Mart. ex DC.) Bureau & K. Schum., 1896 |
| Clytostoma ocositense (Donn. Sm.) Seibert, 1940 |
| Clytostoma purpureum (Lodd. ex Sweet) Rehder, 1914 |
| Couralia Splitg., 1842 |
| Couralia rosea (Bertol.) Donn. Sm., 1895 |
| Cremastus Miers, 1863 |
| Cremastus balbisianus (DC.) Miers, 1863 |
| Crescentia L., 1753 |
| Crescentia aculeata Kunth, 1819 |
| Crescentia acuminata Kunth, 1819 |
| Crescentia alata Kunth, 1819 |