Trees and shrubs of Mexicoby P. C. Standley (1920-1926) gives medicinaluses and poisonous properties for a variety of plants. The literature since 1920 has been reviewed for further properties of the medicinal papilionoid legumes mentioned by Standley, as well as some of their allies, and the results are presented here. It is hoped that this review will not only provide a useful update to Standley’s work, but will also draw attention to certain species which have been little studied since Standley’s time.