This is a large tree that can grow up to 40 m in height. The crown is dense and dome-shaped. The trunk is columnar, without buttresses. The bark is light brown in colour and exudes irritant whitish sap.
The leaves are large, stiff and leathery. The reddish-pink flowers occur in upright panicles near branch tips. The fruits are yellowish-green with brown lenticels, and the skin is about 5mm thick. The flesh colour ranges from pale-orange to yellow. They are fibrous and juicy with a strong smell of turpentine.
It is native to Singapore. Critically endangered.