196. HEUCHERA.—ALUM ROOT. The root of Heu'chera america'na Linné. (See Conspectus.) Habitat: United States. It contains about 14 per cent. of tannin, and is a powerful astringent in doses of 15 to 30 gr. (1 to 2 Gm.).
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.