Ipomoea coscinosperma var. glabra G.W.Schimp. ex Baker & Rendle

POWO follows these authorities in synonymising this name:

• Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew. [Cited as Ipomoea coscinosperma.]
• Gonçalves, M.L. (1987). Convolvulaceae. Flora Zambesiaca 8(1): 9-129. Royal Botanic Gardens, Kew. [Cited as Ipomoea coscinosperma.]
• Hedberg, I., Kelbessa, E., Edwards, S., Demissew, S. & Persson, E. (eds.) (2006). Flora of Ethiopia and Eritrea 5: 1-690. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps. [Cited as Ipomoea coscinosperma.]
• Heine, H. in Hutchinson, J. & Dalziel, J.M. (1963). Convolvulaceae. Flora of West Tropical Africa, second edition 2: 335-352 + 496. Crown Agents for Oversea Governments and Administrations. [Cited as Ipomoea coscinosperma.]
• Verdcourt, B. (1963). Convolvulaceae. Flora of Tropical East Africa: 1-161. [Cited as Ipomoea coscinosperma.]

This name was accepted following an alternative taxonomy by these authorities:

• Andrews, F.W. in Andrews, F.W. (1956). Convolvulaceae. The Flowering Plants of the Sudan 3: 102-125. T.Buncle & co., LTD., Arbroath, Scotland. [Cited as Ipomoea coscinosperma var. glabra.]
• Baker, J.G. & A.B. Rendle in Thiselton-Dyer, W.T. et al. (eds.) (1905). Convolvulaceae. Flora of Tropical Africa 4(2): 62-206. Secretary of State for the Colonies. [Cited as Ipomoea coscinopserma var. glabra Schimp..]