Argemone mexicana Linn. (Linnaeus, 1753; Tournefort, 1694), is a herb of the Papaveraceae (poppy family) indigenous to the West Indies (Fig. 1). The study of this herb and its active principles is important, first to circumvent the serious epidemics of dropsy and glaucoma resulting from the unintentional ingestion of its seed oil in tropical countries; secondly to find a method of producing in ...