The jelutong (Dyera costulata) is a species of tree in the oleander subfamily. It grows to approximately 200 ft (60 metres) with diameters of 5 to 6 ft (2 metres) and boles clear and straight for 90 ft. It grows in Malaysia, Borneo and Sumatra. Its natural distribution is scattered locales in low-elevation tropical evergreen forest.
Jelutong is used for its wood. Although technically a hardwood it has many properties similar to balsa wood. These properties such as the low density, straight grain and fine texture mean it is easy to work with and popular with model makers. The roots are used as a cork substitute.
In addition, jelutong can be tapped for latex and from the 1920s through the 1960s, jelutong latex was an important source of chewing gum.
Jelutong has been traditionally overharvested, and is a threatened species in many areas. However, due to its quick growth, hardy survival, and strong replanting efforts, its extinction is unlikely. It is a protected species in parts of Malaysia and Thailand. The tree is grown commercially for timber.