Xanthophyllum longum

Xanthophyllum longum is a tree in the family Polygalaceae. The specific epithet "" is from the Latin meaning "long", referring to the petioles.
Description.
"Xanthophyllum longum" grows up to tall with a trunk diameter of up to . The bark is pale greenish or blackish. The brownish fruits are round and measure up to in diameter.
Distribution and habitat.
"Xanthophyllum longum" is endemic to Borneo and known only from Sabah. Its habitat is lowland forests.