These flowers are called 'pavazha malli'. In Sanskrit 'Prajaktha' which means fragrant flower. Ever since I was a little girl I've had these trees in my garden. All you need is to get a grafted branch form someone who already has the tree and in 4 months - you have soooo many flowers! My aunt's tree is my tree's momma. These flowers have an orange stalk and 5 white petals and a beautiful fragrance. They are very very delicate. They bloom overnight and by morning they fall to the ground waiting to be picked up (very carefully). My mom somehow managed to make looooong garlands of these flowers to give to the Hanuman temple she used to go to.