A. Nudicau'lis, Wild, Virginian, False Sarsaparilla. -- The root (rhizome), U.S.P. 1820-1870; N. America. Small shrub, stem scarcely above ground, leaf single, petiole .3 M. (1 degree) high; leaflets ovate, serrate, flowers greenish. Root .3 M. (1 degree long), 5 Mm. (l/5') thick, annulate, brownish-gray, inside whitish, spongy pith, aromatic odor and taste; contains volatile oil, resin, starch. Stimulant, diaphoretic, alterative -- like sarsaparilla, in infusion, decoction. Dose, gr. 30-60 (2-4 Gm.)