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Collinsonia.

Botanical name:

Collinsonia. Collinsonia canadensis L. Horse-weed. Horse-balm. Richweed. Heal-all. Stone-root. Knot-root. Knot-weed. Guerit-tout, Baume de Cheval, Fr. Collinsonie, G.—A labiate plant, which grows in woods from Canada to the Carolinas. The whole plant has a strong disagreeable odor, and a warm pungent taste. C. N. Lochman (A. J. P., 1885, 228) found in the root a resin, tannin, starch, mucilage, and wax; in the leaves resin, tannin, wax, and volatile oil. The alkaloid discovered by H. J. Lohmann in the root of the Collinsonia canadensis appears to have been a magnesium salt. (See D. C., 1902.) Collinsonia is tonic, astringent, diaphoretic, and diuretic. It is said to be locally irritant. A decoction of the fresh root has been used in catarrh of the bladder, leucorrhea, gravel, and dropsy.


The Dispensatory of the United States of America, 1918, was edited by Joseph P. Remington, Horatio C. Wood and others.



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