Gonystylus othmaniiGonystylus othmanii is a tree in the family Thymelaeaceae.DescriptionGonystylus othmanii grows as a tree up to tall, with a trunk diameter of up to. The bark is greyish brown. The fruit is brown, up to long.Distribution and habitatGonystylus othmanii is endemic to Borneo where it is known only from Sarawak. Its habitat is lowland mixed dipterocarp forest or kerangas forest, at altitudes of.