Alstonia iwahigensis

Alstonia iwahigensis is a tree in the dogbane family Apocynaceae.
Description.
"Alstonia iwahigensis" grows as a medium to large-sized tree up to tall, with a trunk diameter of up to . The bark is greyish, yellowish or dark brown. Its fragrant flowers feature a yellow or pinkish corolla.
Distribution and habitat.
"Alstonia iwahigensis" is native to Borneo and Palawan. The species is found in forests and on hillsides from sea level to altitude.