Annona squamosa (also called sugar-apple, or sweetsop) is a species of Annona native to the tropical Americas. Its exact native range is unknown due to extensive cultivation, but thought to be in the Caribbean; the species was described from Jamaica. And in Indonesia it become extinct.
It is a semi-evergreen shrub or small tree reaching 6–8 meters (20–26 ft) tall. The leaves are alternate, simple, oblong-lanceolate, 5–17 cm (2.0–6.7 in) long and 2–5 centimeters (0.79–2.0 in) broad. The flowers are produced in clusters of 3-4, each flower 1.5–3 cm (0.59–1.2 in) across, with three large petals and three minute ones, yellow-green spotted purple at the base.
The fruit is usually round, slightly pine cone-like, 6–10 cm (2.4–3.9 in) diameter and weighing 100–230 g (3.5–8.1 oz), with a scaly or lumpy skin. There are variations in shape and size. The fruit flesh is sweet, white to light yellow, and resembles and tastes like custard. The edible portion coats the seeds generously; a bit like the gooey portion of a tomato seed. Sugar-apple has a very distinct, sweet-smelling fragrance. It is slightly grainy, a bit slippery, very sweet and very soft. The seeds are scattered through the fruit flesh; the seed coats are blackish-brown, 12–18 mm (0.47–0.71 in) long, and hard and shiny.
There are also new varieties being developed in Taiwan. There is a pineapple sugar-apple, which is similar in sweetness but has a very different taste. Like the name suggests, it tastes like pineapple. The arrangement of seeds is in spaced rows, with the fruit's flesh filling most of the fruit and making grooves for the seeds, instead of the flesh only occurring around the seeds.