Genipa americana.

Botanical name: 

Genipa americana Linn. Rubiaceae. Genipap. Marmalade Box.

South America. This plant is cultivated in Brazil, Guiana and other tropical countries for its large, greenish-white, edible fruit. The fruit is as large as an orange and has an agreeable flavor. In Surinam, it is called marmalade box.

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