Heterostemm species ?- Darlawn, Aizawl district, Mizoram

Identification of plant : Attachments (1). 4 posts by 3 authors.
I'm attaching herewith a photograph of climber for your identification.
Date : 04-01-2012. Place : Darlawn, Aizawl district, Mizoram. Altitude : ca. 1,100 m.
It grows wild in and around village. Habit : A climber exuding white latex.
Beautiful Liana, Could be a species of Heterostemma (Oianthus).