The dried leaves and flowering tops of the perennial herb, Artemisia dracunculus L., Compositae. Habit. Siberia, Caspian Sea region; cultivated in Western Europe. Yields up to 0.8% oil of tarragon. Constit. p-Allylanisole (estragole; methyl chavicol); ocimene; myrcene; phellandrene(?); p-methoxycinnamaldehyde.