Merremia tridentata subsp. angustifolia (Jacq.) Ooststr.

POWO follows these authorities in synonymising this name:

• Austin, D.F. in Dassanayake (ed.) (1980). Rev. Handb. Fl. Ceylon Convolvulaceae. A Revised Handbook to the Flora of Ceylon 1: 288-363. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta. [Cited as Merremia tridentata.]
• Deroin, T. (2001). Convolvulaceae. Flore de Madagascar et des Comores (Plantes Vasculaires) 171: 11-287. Typographie Firmin-Didot et Cie., Paris. [Cited as Merremia tridentata.]
• 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 Xenostegia tridentata.]
• Kartesz, J.T. in Kartesz, J.T. (1994). Convolvulaceae. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland: 217-221. Timber Press. [Cited as Xenostegia tridentata.]
• Lejoly, J. & S. Lisowski (1993). Les Convolvulaceae dans la flore d'Afrique Centrale (Zaïre, Rwanda, Burundi). Fragmenta Floristica et Geobotanica 38: 351-400. [Cited as Xenostegia tridentata subsp. angustifolia.]
• Lisowski, S. in Lisowski, S. (2009). Convolvulaceae. Flore (Angiospermes) de la République de Guinée: 136-145. Jardin Botanique National de Belgique. [Cited as Xenostegia tridentata.]
• Meeuse, A.D.J. & W.G. Welman (2000). Convolvulaceae. Flora of Southern Africa 28: 1-138. Botanical Research Institute, Department of Agriculture. [Cited as Xenostegia tridentata subsp. angustifolia.]

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 Merremia tridentata subsp. angustifolia.]
• Gonçalves, M.L. (1987). Convolvulaceae. Flora Zambesiaca 8(1): 9-129. Royal Botanic Gardens, Kew. [Cited as Merremia tridentata subsp. angustifolia.]
• 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 Merremia tridentata subsp hastata.]
• O'Donell, C.A. (1941). Revision de las especies americanas de de Merremia (Convolvulaceae). Lilloa 6: 467-554. Universidad Nacional de Tucuman, Instituto 'Miguel Lillo'. [Cited as Merremia tridentata ssp angustifolia.]
• Verdcourt, B. (1963). Convolvulaceae. Flora of Tropical East Africa: 1-161. [Cited as Merremia tridentata subsp angustifolia.]
• Verdcourt, B. (1978). Corrections and additions to the 'Flora of Tropical East Africa: Convolvulaceae': IV. Kew Bulletin 33: 159-168. [Cited as Merremia tridentata subsp. angustifolia var angustifolia.]