| Author | Title | Journal/publisher | Literature ref. no. |
| Goyder, D.J., Gilbert, M.G. & Venter, H.J.T. (2020) | Apocynaceae (Part 2) | Flora Zambesiaca 7(2) | 1237 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.
| Species found: 7 |
| Asclepias grandirandii |
| Ceropegia mirabilis |
| Marsdenia angolensis |
| Marsdenia sylvestris |
| Pergularia daemia subsp. daemia |
| Raphionacme michelii |
| Secamone brevipes |