Leptadenia is a genus of plants in the family Apocynaceae, first described as a genus in 1810.Brown, Robert. 1810. On the Asclepiadeae 23.Tropicos, genus Leptadenia It is native to Africa, including Madagascar, as well as southwest Asia, the Indian subcontinent, and Indochina.Bruyns, P. V. & P. I. Forster. 1991. Recircumscription of the Stapelieae (Asclepiadaceae). Taxon 40(3): 381–391Gibbs Russell, G. E., W. G. M. Welman, E. Retief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. Van Wyk & A. Nicholas. 1987. List of species of southern African plants. Memoirs of the Botanical Survey of South Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).Flora of Pakistan, Leptadenia pyrotechnica (Forssk.) Decne. in Ann. Sci. Nat. Ser. 2. 9:269. 1839. Boiss., Fl. Or. 4:63.1879; Bullock in Hutch., Dalziel & Hepper, Fl. W. Trop. Afr. ed. 2.2:98. 1963; Rech. f., Fl. Iran. 73: 16.1970. Choux, P. 1931. Asclepiadaceae. Cat. Pl. Madag., Asclep. 1(9): 5–24. Catalogue des Plantes de Madagascar, Asclepiadeae.
Species Nine species are accepted. Leptadenia albida – southwestern Angola, Namibia, and northwestern Cape Provinces Leptadenia arborea (Forssk.) Schweinf. – Sahara, Sahel, and Arabian Peninsula Leptadenia gossweileri – southern Angola Leptadenia jasminiflora – southern Democratic Republic of the Congo to South Africa Leptadenia lanceolata (Poir.) Goyder – North Africa and western and eastern tropical Africa Leptadenia madagascariensis Decne. – Madagascar Leptadenia pyrotechnica (Forssk.) Decne. – widespread from Algeria to India Leptadenia reticulata (Retz.) Wight & Arn. – Indian Subcontinent, Myanmar, and Cambodia Leptadenia viminea – western and central Himalayas and India
formerly includedThe Plant List, genus Leptadenia transferred to other genera (Genianthus, Periploca) Leptadenia elliptica Blume synonym of Genianthus ellipticus (Blume) Bakh. f. Leptadenia visciformis Vatke synonym of Periploca visciformis (Vatke) K. Schum.
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