Neil ji,
I yet think this to be Ipomoea triloba,
Also your other post with lobed leaves, put as I. clarkei, must also be I. triloba.
References for description:
Ipomoea triloba is a species of
morning glory known by several common names, including
littlebell and
Aiea morning glory. It is native to the tropical Americas but it is widespread in warm areas of the world where it is an
introduced species and often a
noxious weed. This is a fast-growing vining annual herb producing long, thin stems with
ivylike petioled, heart-shaped leaves 3 to 6 centimeters long.
The leaves sometimes, but not always, have three lobes. The vines produce tubular bell-shaped flowers each about two centimeters long. They are quite variable in color, in shades of pink, red or lavender with or without white markings.
Annual
Leaf simple; blade 3–6 cm, cordate, ± acuminate, entire or 3-lobed, glabrous
Inflorescence: peduncles 1–5-flowered
Flower: sepals ± 8 mm, ± narrowly ovate, acuminate; corolla 1.2–2 cm, narrowly bell-shaped, shallowly 5-lobed
Chromosomes: 2n=30
Ecology: Fields, orchards, other disturbed places
Elevation: -34–50 m.
Bioregional distribution: Sonoran Desert
Distribution outside California: native to tropical America
Weedy.
Pictorial references:
Regards.