Ipomoea raptans is a synonym for Ipomoea aquatica. Water convolvulus is an herbaceous perennial aquatic or semi-aquatic plant of the tropics and subtropics. Trailing vinelike stems are hollow, adapted for floating in aquatic environments. Roots readily develop at nodes that are in contact with moist soil or water.
Short days favor the development of white and light pink flowers.
Purple flowers develop in wild forms of Ipomoea aquatica. To obtain seed, allow the flowers to mature and form seed-bearing pods.