228. POTENTILLA CANADENSIS Linné.—CINQUEFOIL. Habitat: North America. (Herb.) Astringent. Dose: 30 to 60 gr. (2 to 4 Gm.) in infusion.
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.
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