Potentilla. Potentilla reptans. Creeping cinquefoil.
Potentilla.—Potentilla reptans L., the creeping cinquefoil of Europe, growing in waste places from Massachusetts to Ohio, and Potentilla canadensis L., one of the common cinquefoils of America (Fam. Rosaceae), have each been used as astringents in diarrhea, chronic catarrhs, night sweats, etc. According to J. C. Peacock (A. J. P., 433, 1900), dried P. norvegica L. contains four, and P. canadensis thirteen, per cent. of tannic acid. (See P.J., 1911, 350.)