| Calderonia salvadorensis Standl., 1923 |
| Calycophyllum DC., 1830 |
| Calycophyllum candidissimum (Vahl) DC., 1830 |
| Campylobotrys Lem., 1847 |
| Campylobotrys argyroneura Lindl., 1858 |
| Campylobotrys discolor Lem., 1847 |
| Campylobotrys pyrophylla Linden, 1861 |
| Carapichea Aubl., 1775 |
| Carterella Terrell, 1987 |
| Carterella alexanderae (A.M. Carter) Terrell, 1987 |
| Casasia A. Rich., 1850 |
| Casasia chiapensis Miranda, 1954 |
| Cephaelis Sw., 1788 |
| Cephaelis axillaris Sw., 1788 |
| Cephaelis elata Sw., 1788 |
| Cephaelis hirsuta M. Martens & Galeotti, 1844 |
| Cephaelis psychotriifolia Seem., 1854 |
| Cephaelis punicea Vahl, 1796 |
| Cephaelis sessilifolia Standl., 1929 |
| Cephaelis tetragona Donn. Sm., 1916 |