Papaver rhoeas
In the course of history, poppies have always been attributed important medicinal properties. The stems contain a milky latex that may cause skin irritation, and the latex in the opium poppy ("Papaver somniferum") contains several narcotic alkaloids, including morphine and codeine. The alkaloid rhoeadine, derived from the flowers of the corn poppy ("Papaver rhoeas"), is used as a mild sedative. Poppy seeds are used in baking and cooking, and poppyseed oil is used in cooking and pharmaceuticals, and as a radiocontrast agent.