walk by Nizhal that i first encountered the wrightia tinctoria (palai maram in tamil). It's distinguishing feature was the long cylindrical pods that appeared in pairs, joined (or seemingly so) at the ends.
This time i was lucky enough to see it in bloom, its pretty little white flowers all over the branches, truely resembling snow flakes from a distance.
The tree has many medicinal uses. Go check it out at Flowers of India.
Oh and turns out this one belongs to the same family as the oleander and the plumeria - Apocynaceae.