Stenostelma is a genus of plants in the family Apocynaceae, first described as a genus in 1894.Schlechter, Friedrich Richard Rudolf. 1894. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 18(Beibl. 45): 6. in German + LatinGibbs 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). It is native to southern Africa, ranging from Mozambique, Zambia, and Namibia to South Africa.
Six species are accepted: Stenostelma capense Schltr. - South Africa (Cape Provinces, Free State, and Northern Provinces) to Botswana, Namibia, Zimbabwe, and Zambia Stenostelma corniculatum (E. Mey.) Bullock - South Africa, Lesotho, Eswatini, and Mozambique Stenostelma eustegioides – Northern Provinces (Gauteng) to Free State and Cape Provinces Stenostelma ligulatum – Northern Provinces of South Africa Stenostelma periglossoides – Free State, KwaZulu-Natal, and Northern Provinces of South Africa Stenostelma urceolatum – KwaZulu Natal
formerly includedThe Plant List Stenostelma eminens (Harv.) Bullock, syn of Asclepias eminens (Harv.) Schltr.
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