Manihot esculenta, with common names cassava (/kəˈsɑːvə/), Brazilian arrowroot, manioc, and tapioca, is a woody shrub of the spurge family, Euphorbiaceae, native to South America. It is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates. Though it is sometimes called yuca in Spanish, it differs from the yucca, an unrelated fruit-bearing shrub in the family Asparagaceae.