Jessenia polycarpa.

Botanical name: 

Jessenia polycarpa Karst. Palmae.

Brazil. A palm of New Granada. The fruit is about the size of a pigeon's egg, violet colored, having a thin, oily, eatable flesh surrounding a fibrous husk which encloses a single, horny seed.

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