Xanthophyllum nigricansXanthophyllum nigricans is a tree in the family Polygalaceae. The specific epithet nigricans is from the Latin meaning 'blackish', referring to the drying of plant parts.DescriptionXanthophyllum nigricans grows up to tall with a trunk diameter of up to. The smooth bark is greyish or dark brown. The flowers are white, drying dark reddish. The brownish fruits are round and measure up to in diameter.Distribution and habitatXanthophyllum nigricans is endemic to Borneo. Its habitat is ridge and hillside forests from sea-level to altitude.