Gonystylus maingayiGonystylus maingayi is a tree in the family Thymelaeaceae.DescriptionGonystylus maingayi grows as a tree up to tall, with a trunk diameter of up to. Its bark is grey to brown. The fruit is round, dark brown, up to in diameter.Distribution and habitatGonystylus maingayi is native to Sumatra, Peninsular Malaysia, Singapore and Borneo. Its habitat is swamp forests to altitude.