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317. Rhus glabra, N.F.—Sumac.

Botanical name:

The dried fruit of Rhus gla'bra Linné.

DESCRIPTION OF DRUG.—Berries (drupes) about 3 Mm. (1/8 in.) in diameter, densely covered with a dark-red down. The sarcocarp (the outer portion of a stone fruit) is composed of two layers, the outer being crimson, and the inner whitish; putamen (stone) flattish, ovoid, smooth. Inodorous; taste acidulous and astringent.

Powder.—Dark reddish-brown. Characteristic elements: Thick-walled cells of testa, porous; many celled trichomes deep red in color; seldom dispensed as powder.

CONSTITUENTS.—The acidity of the fruit is due to the acid calcium and potassium malates present; there are also tannic and gallic acid, a red coloring-matter, etc.

ACTION AND USES.—Astringent and refrigerant. Used as a gargle in the form of decoction or fluidextract. Dose: 30 gr. (2 Gm.).

OFFICIAL PREPARATION.

Fluidextractum Rhois Glabrae, (U.S.P. VIII). Dose: 1 to 2 fl. dr. (4 to 8 mils).


A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.



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