| Callichlamys garnieri Standl. & L.O. Williams, 1952 |
| Callichlamys latifolia (Rich.) K. Schum., 1894 |
| Callichlamys peckoltii Bureau ex K. Schum., 1894 |
| Callichlamys riparia Miq., 1844 |
| Callichlamys rubiginosa Miers, 1863 |
| Callichlamys rufinervis (Hoffmanns. ex DC.) Miers, 1863 |
| Callichlamys splendida Miers, 1863 |
| Campsis Lour., 1790 |
| Campsis radicans (L.) Seem., 1867 |
| Catalpa Scop., 1777 |
| Catalpa bignonioides Walter, 1788 |
| Ceratophytum Pittier, 1928 |
| Ceratophytum brachycarpum Pittier, 1928 |
| Ceratophytum capricorne Pittier, 1928 |
| Ceratophytum tetragonolobum (Jacq.) Sprague & Sandwith, 1934 |
| Ceratophytum tobagense (Urb.) Sprague & Sandwith, 1933 |
| Chilopsis D. Don, 1823 |
| Chilopsis linearis (Cav.) Sweet, 1823 |
| Chilopsis linearis subsp. arcuata (Fosberg) Henrickson, 1985 |
| Chilopsis linearis var. arcuata Fosberg, 1986 |