| Cerbera peruviana Pers., 1805 |
| Cerbera thevetia L., 1753 |
| Cerbera thevetioides Kunth, 1819 |
| Ceropegia L., 1753 |
| Ceropegieae Decne. ex Orb., 1843 |
| Chthamalia Decne., 1844 |
| Chthamalia chihuahuensis (A. Gray) Morillo, 2023 |
| Chthamalia decumbens (W.D. Stevens) L.O. Alvarado & E.B. Cortez, 2021 |
| Chthamalia lesueurii (Standl.) Morillo, 2023 |
| Chthamalia nummularia Decne., 1844 |
| Chthamalia ojadapantha (L.O. Alvarado, S. Islas & M.G. Chávez) S. Islas & M.G. Chávez, 2021 |
| Chthamalia parviflora (Torr.) L.O. Alvarado & E.B. Cortez, 2021 |
| Chthamalia pedunculata Decne., 1844 |
| Chthamalia producta (Torr.) L.O. Alvarado & E.B. Cortez, 2021 |
| Chthamalia prostrata (Cav.) L.O. Alvarado & E.B. Cortez, 2021 |
| Chthamalia schaffneri (A. Gray ex Hemsl.) L.O. Alvarado & M.G. Chávez, 2021 |
| Chthamalia tehuacana Castañeda-Zárate, M.G. Chávez & L.O. Alvarado, 2023 |
| Chthamalia wootonii (Vail) Morillo, 2023 |
| Cryptostegia R. Br., 1820 |
| Cryptostegia grandiflora Roxb. ex R. Br., 1820 |