Common name – Blue Dawn Flower, Oceanblue morning-glory, Blue morning-glory
I saw the vine very nicely allowed to climb onto a pillar at the Hitex Convention Centre, at Hyderabad.
The flowers open in the morning and fade to magenta by evening. Unfortunately I did not stay there long enough to see that happen. This plant can also grow all over if left unheeded.
Botanical name: Ipomoea indica Family: Convolvulaceae (Morning glory family)