RF2REN39K–DENMARK - CIRCA 1977: stamp printed by Denmark, shows Cnidium dubium, circa 1977
RF2J2PF1Y–MOSCOW, RUSSIA - MARCH 13, 2022: Postage stamp printed in Denmark shows Cnidium dubium, Threatened flora serie, circa 1977
RMJ7WW9Y–Cnidium dubium Sturm19
RMCX97HK–Cnidium venosum
RMW3N91E–Cnidium dubium Sturm19.
RMP5ETJP–N/A. Cnidium dubium (Schkuhr) Thell., syn. Cnidium venosum (Hoffm.) W. D. J. Koch , nom. illeg. Original Description Brennsaat, Cnidium venosum . 1796. Johann Georg Sturm (Painter: Jacob Sturm) 354 Cnidium dubium Sturm19
RM2F54JK8–Swamp burning sowing (Cnidium Venosum Koch, C. Dubium part.), Part of the fruit material Swamp burning sowing (Cnidium Venosum Koch, C. Dubium part.), Part of the fruit material
RM2F4A34T–Swamp burning sowing (Cnidium Venosum Koch, C. Dubium part.), Part of the fruit material Swamp burning sowing (Cnidium Venosum Koch, C. Dubium part.), Part of the fruit material