The durian (IPA: [duɾiɑn]) is the fruit of trees of the genus Durio. There are 30 recognised Durio species, all native to Southeast Asia and at least nine of which produce edible fruit. Durio zibethinus is the only species available in the international market; other species are sold in their local region. The durian fruit is distinctive for its large size, unique odour, and a formidable thorn-covered husk. Its name comes from the Malay word duri (thorn) together with malay suffix that is -an (for building a noun in Malay), meaning "thorny fruit".