Description Huanarpo Macho Huanarpo Macho (Jatropha macrantha) Root-bark Powder. Huanarpo Macho is a medium-sized shrubby tree species in the Jatropha family native to Peru. It grows to about 12m tall and has attractive orange-red flowers. Huanarpo Macho bark is an interesting herb that has been used traditionally in Peruvian herbal medicine to help support healthy libido and erectile function.
