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Food and Agriculture Organization of the United Nations - jatropha curcas - a bioenergy crop for the poor

jatropha curcas, (genus Jatropha), member of the spurge family (Euphorbiaceae), native in both New World and Old World tropics and containing about 175 species of milky-juiced herbs, shrubs, and trees, some useful for their oils or as ornamental plants in tropical gardens.

A garden curiosity is tartogo, or gouty jatropha curcas (J. podagrica), from Guatemala and Honduras