Brazil nutmeg, long nutmeg (M. fatua) is longer than the true species. Other species include M. oloba, cultivated in Madagascar, but not readily known in the commerical industry; M. sebifera, a common tree in the forests of Guyana and Northern Brazil to Panama. It is utilized mainly for the nut oil; and M. fragrans, the oldest and best known of these being a small widely branching tree growing to about twenty-five feet and supposedly indigenous to the Indian Archipelago. The fruit is about the size of a walnut.