Alstonia angustiloba
Alstonia angustiloba is a tree in the dogbane family Apocynaceae. Description. "Alstonia angustiloba" grows as a large tree up to tall, with a trunk diameter of up to . The bark is greyish or brownish. Its fragrant flowers feature a white, yellow or cream corolla. The fruit is brownish, up to long. Distribution and habitat. "Alstonia angustiloba" is native to Thailand, Peninsular Malaysia, Singapore, Sumatra and Java. It is found in a variety of habitats from sea level to altitude.