Annona reticulata is a small deciduous or semi-evergreen tree in the plant family Annonaceae. It is best known for its fruit, called custard apple, a common name it shares with fruits of several other species in the same genus: A. cherimola and A. squamosa or sometimes it is called wild-sweetsop, bull's heart, bullock's-heart, or ox-heart. The flavor of the fruit is sweet and pleasant, but less popular than that of A. cherimola.