The tembusu is a large evergreen tree in the family Gentianaceae, native to Southeast Asia (from Indo-China to New Guinea). It is the Malay name for Cyrtophyllum fragrans (synonym Fagraea fragrans). Its trunk is dark brown, with deeply fissured bark, looking somewhat like a bittergourd. The tree grows in an irregular shape from 10 to 25 metres high, with light green oval-shaped leaves, and yellowish flowers with a distinct fragrance. The fruits of the tree are bitter tasting red berries, which are eaten by Pteropus fruit bats.