The plant is known as the physic nut. It's oil is used for wound healing, and as a Mollusk killer, the nut can be burned for light, the plant is a purgative, and an emetic. It is used by natives Worldwide for all manner of human ailments, including arthritis, skin fungus infections, & hundreds of other uses too numerous to mention. Try http://www.hort.purdue.edu/newcrop/duke_energy/Jatropha_curcas.html#Uses,  for the other uses.Doc. Dan