Was used in an exhibit for the International Congress of the History of Medicine in Montreal; used by the North American Indians; note: crude drugs were used in Canada quite extensively until around the 1920s; habitat of Taraxacum officinale: Europe; introduced to North America by early settlers; parts used: root; uses: digestive disorders, e.g. heartburn; tonic properties; official preparation: U.S.P 1831-1926.