They grow exclusively in the region of South America that is called The Cerrado. The nuts come from the fruit of a tree known in some parts of Brazil as Baruziero, and in Bolivia as Almendra Chiquitana. The scientific name of the tree is Dipteryx alata Vogel. The trees are large, long-lived, and perfectly adapted to the unusual climate of the Cerrado such that they need no irrigation, fertilizer, or pesticide. A mature tree produces about 4000 fruits weighing approximately 25 grams. Each fruit has one nut that weighs approximately one gram inside a very hard shell.