Trichilia triacantha, the bariaco, is a species of plant in the Meliaceae family. It is endemic to Puerto Rico. It is threatened by habitat loss. It is a federally listed endangered species of the United States. The bariaco is a shrub or a tree reaching up to 9 meters tall. It has leaves made up of several leathery, spine-toothed leaflets and the flowers are white. The fruit is a capsule with a red aril. The plant grows in dry forest habitat on limestone substrates, often near intermittent streams. This plant has been overharvested because its wood is useful and attractive.
