| Seutera angustifolia (Pers.) W.D. Stevens, 2005 |
| Seutera palmeri (S. Watson) Fishbein & W.D. Stevens, 2005 |
| Stapelia L., 1753 |
| Stapelia campanulata Sessé & Moc., 1888 |
| Stapelia pancololote Sessé & Moc., 1888 |
| Stapeliinae G. Don, 1838 |
| Stemmadenia Benth., 1845 |
| Stemmadenia bignoniiflora (Schltdl.) Miers, 1878 |
| Stemmadenia decipiens Woodson, 1928 |
| Stemmadenia donnell-smithii (Rose) Woodson, 1928 |
| Stemmadenia eubracteata Woodson, 1928 |
| Stemmadenia galeottiana (A. Rich.) Miers, 1878 |
| Stemmadenia grandiflora (Jacq.) Miers, 1878 |
| Stemmadenia hannae M. Méndez & J.F. Morales, 2005 |
| Stemmadenia insignis Miers, 1878 |
| Stemmadenia litoralis (Kunth) L. Allorge, 1985 |
| Stemmadenia macrophylla Greenm., 1900 |
| Stemmadenia oaxacana L.O. Alvarado, 2007 |
| Stemmadenia obovata (Hook. & Arn.) Schum., 1895 |
| Stemmadenia palmeri Rose & Standl., 1924 |