| Cynanchum eulaxiflorum Lundell, 1977 |
| Cynanchum foetidum (Cav.) Kunth, 1819 |
| Cynanchum glaberrimum (Woodson) L.O. Williams, 1968 |
| Cynanchum jaliscanum (Vail) Woodson, 1941 |
| Cynanchum kunthii (Decne.) Standl., 1924 |
| Cynanchum ligulatum (Benth.) Woodson, 1941 |
| Cynanchum maccartii Shinners, 1964 |
| Cynanchum maccartii var. latifolium Turner ex Henrickson, 1987 |
| Cynanchum mexicanum Brandegee, 1913 |
| Cynanchum miserum L.O. Williams, 1968 |
| Cynanchum mulegense Wiggins, 1965 |
| Cynanchum nigrum Cav., 1793 |
| Cynanchum ovalifolium Wight, 1834 |
| Cynanchum palmeri (S. Watson) S.F. Blake, 1917 |
| Cynanchum peninsulare S.F. Blake, 1917 |
| Cynanchum pringlei (A. Gray) Henrickson, 1987 |
| Cynanchum prostratum Cav., 1791 |
| Cynanchum racemosum (Jacq.) Jacq., 1763 |
| Cynanchum recurvum (Rusby) Spellman, 1973 |
| Cynanchum rensonii (Pittier) Woodson, 1941 |