From Wikipedia: "Osage-orange, Horse-apple, Bois D'Arc, or Bodark (Maclura pomifera) is a small deciduous tree or large shrub, typically growing to 815 metres (2649 ft) tall. It is dioeceous, with male and female flowers on different plants. The fruit, a multiple fruit, is roughly spherical, but bumpy, and 715 cm in diameter, and it is filled with a sticky white latex sap. In fall, its color turns a bright yellow-green and it has a faint odor similar to that of oranges.
Maclura is closely related to the genus Cudrania, and hybrids between the two genera have been produced. In fact, some botanists recognize a more broadly defined Maclura that includes species previously included in Cudrania and other genera of Moraceae.
Osajin and Pomiferin are flavonoid pigments present in the wood and fruit, comprising about 10% of the fruit's dry weight. The plant also contains the flavonol morin.
Recent research suggests that elemol, another component extractable from the fruit, shows promise as a mosquito repellent with similar activity to DEET in contact and residual repellency."
