Acoording to A revised, phylogenetically-based concept of Ceropegia (Apocynaceae) by P.V. Bruyns et al., (2017). All genera of the stapeliads are placed in greatly enlarged Ceropegia, However that is not applicable yet.
Boucerosia edulis Edgew is a synonyme of Caralluma edulis Edgew.
Desmidorchis acutangula Dence. is a synonyme of Desmidorchis retrospiciens Ehrenb.