Ipomoea tricolor (Introduced)

Ipomoea tricolor Cav., Icon. 3(1): 5, pl. 208 1794. (syn: Convolvulus pauciflorus Willd. ex Roem. & Schult.; Convolvulus rubrocoeruleus (Hook.) D. Dietr.; Convolvulus schiedeanus D. Dietr.; Convolvulus venustus Spreng.; Ipomoea hookeri G. Don; Ipomoea rubro-caerulea Hook.; Ipomoea schiedeana Ham.; Pharbitis rubro-caerulea (Hook.) Planch.; Pharbitis tricolor (Cav.) Chittenden);

Argentina (Buenos Aires, Salta), Colombia (Valle), Bolivia (La Paz, Santa Cruz), Costa Rica, Ecuador, Guatemala, Mexico (Aguascalientes, Campeche, Chiapas, Ciudad de Mexico, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Oaxaca, Puebla, Queretaro, Quintana Roo, San Luis Potosi, Sinaloa, Tabasco, Tamaulipas, Veracruz, Yucatan, Zacatecas), Honduras, Nicaragua, Venezuela (Aragua, Distrito Federal, Guarico, Lara, Merida), Hispaniola, Puerto Rico, Virgin Isl. (St. Croix, St. John, St. Thomas), Lesser Antilles (Antigua, Guadeloupe, Saba, St. Martin), China (I), tropical Africa (I), Ethiopia (I), Zambia (I), Zimbabwe (I), Malawi (I), Mozambique (I), Chad (I), Madagascar (I), peninsular Malaysia (I), Bangladesh (I), Vietnam (I), India (I), USA (I) (Arizona (I), Florida (I), Massachusetts (I), Pennsylvania (I), Texas (I)), Uzbekistan (I) as per Catalogue of Life;

Climbers with glabrous twining stems. Leaves alternate, 3-7 x 2-6 cm, ovate, acuminate apically, cordate basally. Flowers in axillary cymes, 3-9 cm long. Sepals ovate-lanceolate, 4-6 mm long. Corolla blue to violet, the tube white, 4-6 cm long, funnelform. Fruit capsular, ovoid, 8-10 mm long, mucronate because of the persisting style base; seeds 4-5 mm long, black, minutely pubescent.
Flowering and fruiting: October-February
Along roadsides and scrub jungles
Native of tropical America
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi as per India Biodiversity Portal)

Cultivated plant seen at the Flower Show.
Convolvulaceae ??
Pl. check comparative images in efi site under Ipomoea
Thanks … Looks close to Ipomoea nil to me.
No, calyx looks different as per Ipomoea nil
Also looks different from Ipomoea indica and Ipomoea purpurea

Does not seem to match with any species as per comparative images at Ipomoea
I hope buds seen belong to the same plant.

Ipomoea tricolor Cav. or its hybrid ?