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Balsamorhiza. Balsamorhiza terebinthinacea Nutt. (Fam. Compositae.)—The root of this plant, obtained from Idaho and Oregon, has a strong, terebinthinate odor, and is used medicinally in the Western States. It contains volatile oil, fixed oil, resin, organic acid, and sugar (Herman T. Kelly, D. C., 1897, 32).