Papaver Rhoe'as, Rhoeados Petala, Red Poppy Petals Br. -- Europe; flowers large, beautiful red, petals mainly used for their coloring matter, which is yielded to water; its milky juice is sedative, demulcent, mild anodyne, probably due to rhoeadine, also contains two coloring principles -- rhoeadic and papaveric acids. Syrupus Rhoeados (Br.), 26 p.c. Dose 3ss-1 (2-4 cc.).