High Quality Content by WIKIPEDIA articles! Annona muricata is a member of the family of Custard apple trees called Annonaceae and a species of the genus Annona known mostly for its edible fruits Anona. Annona muricata produces fruits that are usually called Soursop due to its slightly acidic taste when ripe. A. muricata trees grew natively in the Caribbean and Central America but are now widely cultivated and in some areas, escaping and living on their own in tropical climates throughout the world.