Hopea treubii is a tree in the family Dipterocarpaceae, native to Borneo. It is named for the Dutch botanist Melchior Treub.
Description Hopea treubii grows as a forest canopy tree, up to tall, with a trunk diameter of up to . It has buttresses and flying (detached) buttresses. The bark is fissured. The leathery leaves are shaped obovate to elliptic and measure up to long. The inflorescences measure up to long and bear up to seven yellow flowers. The nuts are egg-shaped and measure up to long.
Distribution and habitat Hopea treubii is endemic to Borneo. Its habitat is mixed dipterocarp forests, to elevations of .
Conservation Hopea treubii has been assessed as near threatened on the IUCN Red List. It is threatened by conversion of land for plantations, agriculture and logging roads. The species is also threatened by logging for its timber. The species is found in some protected areas.
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