Some Maldivians told me years ago glabra was popular there. They gave me a plant from provenance Maldives.
Pasted now is the good news extract:
Annona glabra L. ANNONACEAE
Synonyms: Annona australis, Annona chrysocarpa, Annona peruviana
Common names: Pond apple, bullock’s heart
Dhivehi name: Kalhuthumeyvaa
Status: Common in home gardens. It has also become wild and naturalized
along the border of open wetlands as in Fuvamulah Island.
Description: A semi-deciduous tree about 10 to 15 m tall. Normally with a single trunk
but seedlings can grow in clumps giving the appearance of a multi-stemmed tree. Bark
is grey, thin and fissured with prominent lenticels (involved in gas exchange and
appear as raised spots). Mature trees have slightly buttressed roots. Leaves are leathery,
simple, alternate in arrangement along the branches and oblong-elliptical in shape;
upper surface of the leaf is dark green and underneath is pale. Foliage contains yellow
leaves during the summer. Flowers are single, large, 2 to 5 cm in diameter, pale yellow
to cream-white in colour and attractive with three leathery outer petals and three
smaller inner petals with a red inner base. Fruit is mostly spherical in shape and looks
like smooth-skinned sweetsop and mango in shape; some fruits look like bullock’s
heart. Fruit is green in colour when young but after falling from trees turn yellow and
then black. Pulp is fleshy, pinkish-orange or orange, aromatic and pungent. Each
fruit contains about 100 light brown coloured seeds, which are about 1 cm in length.
Uses: Fruits are delicious and eaten raw. They are also used in the preparation of a
sweet drink. There is heavy demand for ripened fruit during the Ramzan season.
Softwood and roots are used as fish floats. Bark is an excellent home for orchids and
other air plants. Seedling can be used as a rootstock for custard apple and sweetsop
http://www.fao.org/forestry/14635-087ce4f27d7aee9662f6996003709769c.pdfThe bad news is the fruit was only marginally if at all any better than the run of the mill Pond Apple confirming that the Maldives are depauperate naturally of primate fruits so the culture is statistically more likely to be seduced by a second class fruit than cultures with more biodiversity.