Kigelia pinnata.

Botanical name: 

Kigelia pinnata DC. Bignoniaceae.

A tree of tropical Africa. The fruit is often two or more feet long and is filled with pulp containing numerous, roundish seeds. Grant says the roasted seeds are eaten in famines.

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