I believe the plant in question is Jatropha Curcas, or possibly J.Integerrima, its a member of the euphorbiacea, and the oil of the seed is used to make biodiesel.
Toxic plant also, so it cannot be eaten in times of hardship, but there is apparently a lot of oil in the seeds that has been used for making biodiesel, then again, most of the euphorbiacea are if not outright toxic, then certainly irritant, nasty plants, and some are pretty lethal, I wouldn't want to work in a field havesting the stuff thats for sure.
http://en.wikipedia.org/wiki/Jatrophahttp://en.wikipedia.org/wiki/Jatropha_curcasTake one look at those seeds, and tell me they don't look more or less identical to castor beans (ricinus).