Biological Source
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Constit. of the root of Derris elliptica .
Widely distrib. in the Leguminosae (Papilionoideae) e.g. in many other Derris spp. Lonchocarpus spp. Millettia spp., Tephrosia spp., Amorpha fruticosa,
Antheroporum pierrei, Crotalaria burhia, Crotalaria medicaginea, Mundulea pauciflora, Mundulea sericea, Neorautanenia amboensis, Neorautanenia ficifolia, Ormocarpum glabrum, Pachyrrhizus erosus,
Piscidia erythrina, Piscidia mollis, Poiretia tetraphylla and Spatholobus roxburghii.
Also in Verbascum thapsus (Scrophulariaceae)
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