121. Rumex, N.F.—Yellow dock.
121. RUMEX, N.F.—YELLOW DOCK. The root of Ru'mex cris'pus Linné, and of some other species of Rumex. Off. in U.S.P. 1890 A fusiform root from 100 to 200 Mm (4 to 8 in.) long and 10 to 15 Mm (2/5 to 3/5 in.) thick; externally reddish-brown, the upper portion annulate, the lower portion wrinkled; fracture short, exhibiting a rather thick cortical layer and a yellowish or whitish interior, somewhat mottled, the rather porous and horny wood-wedges separated by fine, distinct, reddish medullary rays; inodorous; taste astringent and bitter. Alterative, tonic, and astringent. Dose: 15 to 60 gr. (1 to 4 Gm.). Extractum Rumicis Fluidum, U.S.P. 1890. Dose: 15 to 60 drops (1 to 4 mils).
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.