Lettsomia Roxb.

POWO follows these authorities in synonymising this name:

• Austin, D.F. (1975). Convolvulaceae. Annals of the Missouri Botanical Garden 62: 157-224. [Cited as Argyreia.]
• 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 Argyreia.]
• Austin, D.F. in Lasser, T. (1982). Convolvulaceae. Flora de Venezuela 8(3): 15-226. Fundación Educación Ambiental. [Cited as Argyreia.]
• Deroin, T. (2001). Convolvulaceae. Flore de Madagascar et des Comores (Plantes Vasculaires) 171: 11-287. Typographie Firmin-Didot et Cie., Paris. [Cited as Argyreia.]
• Fang, R.-Z. & Staples, G. (1995). Convolvulaceae. Flora of China 16: 271-325. Missouri Botanical Garden Press, St. Louis. [Cited as Argyreia.]
• Gagnepain & Courchet in H. Lecomte (1915). Flore Indo-Chine Convolvulaceae. Flore Générale de l'indo-Chine 4: 228-313. [Cited as Argyreia.]
• Khan, M.S. (1985). Fl. Bangladesh Convolvulaceae. Flora of Bangladesh 30: 1-59. Bangladesh National Herbarium, Dhaka. [Cited as Argyreia.]
• Ooststroom, S.J. van & R.D. Hoogland (1953). Convolvulaceae. Flora Malesiana 4: 388-512. Noordhoff-Kolff N.V., Djakarta. [Cited as Argyreia.]
• Staples, G. (with P. Traiperm) (2010). Convolvulaceae. Flora of Thailand 10: 330-468. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok. [Cited as Argyreia.]

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

• Clarke, C.B. in Hooker, J.D. (1883). Fl. Br. India Convolvulaceae. Flora of British India 4: 179-228 + 734. [Cited as Lettsomia.]