A large tree of the mango family that grows up to 30m tall. Crown is dense and dome-shaped. Trunk is columnar, without buttresses, with grey-ish bark that exudes irritant sap. Leaves are large and leathery. Flowers are pinkish in colour. Flowering around April to June. Fruits are pale-brown with rough skin, flesh is white and has a sour taste.
Native to Singapore. According to the Singapore Red Data Book (2008, 2nd Edition), this species is critically endangered in the wild population in Singapore, (Category D) with fewer than 50 mature individuals, OR if more than 50 mature individuals but less than 250, with some evidence of decline or fragmentation.
The Binjai was commonly planted in villages for its brown potato-like fruits. Spottiswoode Park used to be a nutmeg plantation in the 1840s before it was converted into bungalow-like residences with a garden-like setting for employees of the Tanjong Pagar Dock Company (the present Port of Singapore Authority) in the early 1900s. The residents or estate managers during that period may have planted this binjai tree for its sourish-sweet fruits.