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Ipomoea coccinea
The 2nd photo (when turned so it is facing the right direction) shows fully erect seedpod pedicels which indicates Ipomoea hederifolia.
Ipomoea hederifolia and Ipomoea coccinea are visually very similar but genetically they have different chromosome counts and are chemo-taxonomically different...
Same thing we see here...
Ipomoea hederifolia
Its at peak in flowering across Western ghats....
http://www.flowersofindia.in/catalog/sli...
Cypress vine has a star shaped bloom and a deeper red hue to the flower. See here: http://www.projectnoah.org/spottings/695...