1. Ansari, A.A., 1984. Ceropegia. Fascicles of Flora of India. 16, 2–34. Botanical Survey of India. Howrah.
2. Kenya Ceropegia Scrapbook;Archer,1992
3. Against consensus;Barrett;Syst. Zool.,1991
4. Ceropegia, Brachystelma and Tenaris in South West Africa;Bruyns;Dinteria,1984
5. The genus Ceropegia on the Canary Islands (Asclepiadaceae–Ceropegieae);Bruyns;Beitr. Biol. Pflanzen,1986