Merremia gemella

Merremia gemella (Burm. f.) Hallier f., Bot. Jahrb. Syst. 16(4–5): 552, in obs. 1893. (syn: Convolvulus affinis Wall.; Convolvulus gemellus Burm. f.; Convolvulus polyanthus Wall.; Ipomoea gemella (Burm. f.) Roth; Ipomoea polyantha Miq.; Ipomoea radicans Bl.; Tirtalia gemella (Burm. fil.) Rafin.);

Taiwan, ?Cambodia, Indonesia, India, Bangladesh, peninsular Malaysia, Myanmar
[Burma], New Guinea, Philippines, Thailand, Vietnam, Sulawesi, Sumatra, Lesser
Sunda Isl., Moluccas, Australia (Western Australia, Northern Territory,
Queensland), Java, Southern Marianas (I) (Guam (I)), Darjeeling as per Catalogue of Life;

India: Assam, Gujarat, Odisha as per India Biodiversity Portal;

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Convulvulaceae id from Bangladesh _sm_3017 : 5 posts by 3 authors. Attachments (2)- around 650 kb each. 

Flowering and picture taken: Dec_2018

Habitat: Roadside
Location: Chittagong 

Please check comparative images at 

Check for Merremia sp. Most probably Merremia hedracea….!!

Ok, I will check. However, to me it is M.gemella