Kopsia singapurensis

About

Kopsia singapurensis is a species of plant in the family Apocynaceae. It is native to Peninsular Malaysia and Singapore. It is threatened by habitat loss. It can grow up to five metres tall. When the plant is cut, white latex is produced. The flower has five petals. In Singapore, the tree can only be found in the Nee Soon Swamp Forest. In the wild, it flowers only twice a year, but when cultivated, it is free-flowering if grown under the right conditions.

Summary from Wikipedia