The family Apocynaceae consists of about 250 genera and 2000 species of tropical trees, shrubs, and vines.[1] With the inclusion of species of Asclepiadaceae, the family has now been enlarged from two to five subfamilies.[2] Characteristic features of the family are that almost all species produce milky sap; leaves are simple, opposite, or whorled; flowers are large, colorful, and slightly fragrant with five contorted lobes; and fruits are in pairs.[1,3]