I saw this specimen at the hort park and this is my first sighting of the pink variety. So far, i've only managed to see the purple one growing at Lyndi's garden.
Not a lot is known about this creeper other than the fact that it originates from Thailand. Luckily for me, a trip to Ang Mo Kio nursery on Friday proved most fruitful as they had just brought in a new albeit young batch of plants. This will definitely go on some trellis at the new place, along with all my other creepers and vines.