Castanopsis oligoneura

Castanopsis oligoneura is a tree in the family Fagaceae. The specific epithet oligoneura is from the Greek meaning 'few nerves', referring to the leaf venation.

Description
Castanopsis oligoneura grows as a tree up to 25 m tall with a trunk diameter of up to 45 cm. The brownish bark is smooth to lenticellate. The coriaceous leaves measure up to 15 cm long. Its roundish nuts measure up to 2.5 cm long.

Distribution and habitat
Castanopsis oligoneura is endemic to Borneo. Its habitat is lowland dipterocarp forests up to 300 m elevation.