Argemone mexicana (Mexican Poppy) This plant is highly Toxic and hence no attempt should be made to use it. The information presented here is for educational purposes only. 1. Scientific name and Basic Taxonomic classification Species: Argemone mexicana Family: Papaveraceae Genus: Argemone Related Herbs from the same family: Papaver somniferum (Opium Poppy/Ahiphena): The source of opium and its alkaloids like morphine and codeine. In Ayurveda, it is used in extremely control