The petroleum nut, Pittosporum resiniferum, is a tree that grows in the Philippines, particularly in the wilderness surrounding the Mayon Volcano. The petroleum nut derives its name from the resemblance of the fruit's odor to petroleum-based fuels. The fruits of the tree burn brightly when ignited, and can be used for illumination as torches or candles. Its fruit is also highly suitable for use in producing biofuel. This use has been encouraged by the Philippines Department of Agrarian Reform and the Philippine Coconut Authority.
The oil can also be distilled into a very pure form of n-Heptane.