Soursop

Annona species are evergreen trees. Bark dark brown, fissured. Leaves simple, alternate, exstipulate, coriaceous, glabrous, glaucous or slightly pubescent beneath. Flowers bisexual, terminal or leaf opposed, solitary or in fascicles, Sepals 3, valvate, Petals 3 or 6, valvate, much larger than the sepals, outer whorl fleshy and triquetrous above with a thinner concave base, inner whorl if present very small, strap shaped. Stamens numerous, anthers narrow, ovoid, dorsal at the top of connectives. Carpels many, subconnate, ovule 1 basal, erect, style oblong, carpels partly free in flower, later confluent into large syncarpous fleshy fruit, 1 ovuled, Seed with fleshy albumen. ( From: https://indiabiodiversity.org/species/show/260049 )