Glycosmis pentaphylla.

Botanical name: 

Glycosmis pentaphylla Correa. Rutaceae. Jamaica Mandarin Orange.

Tropical Asia and Australia. This Asiatic tree is noted for the delicious flavor of its fruit. It is the mandarin orange of Jamaica and is grown as a fruit tree in the Public Gardens of Jamaica. The ripe fruit is eaten.

Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.