The Giant Mahang can be found in Singapore, Thailand, Malaysia, Sumatra and Borneo.
The Giant Mahang is a tall tree with a spreading crown, growing to about 30m tall.
The leaves of the Giant Mahang are alternate and large, about 40cm in size. They have 3 shallow lobes, are palmately-veined, have a toothed margin, and are hairy on the underside. Stipules present are light green, papery, and hairy.
The flowers are greenish and grow within bundles within bracts which form part of the large branched inflorescences.
Fruits are less than 1cm in diameter and can range from green to yellow to brownish in colour. The dehiscent capsules have 2 lobes while the seeds have purple aril.