Pa'nax quinquefo'lium (Aralia quinquefo'lia), Panax, Ginseng. -- The root, U.S.P. 1840-1870; N. America. Small shrub, .3 M. (1 degree) high, smooth, leaflets 5's, serrate; flowers yellowish, fruit scarlet; root 5-12.5 Cm. (2-5') long, fusiform, annulate, branched, brownish-yellow, wood yellowish, sweetish, aromatic; contains panaquilon, resin, volatile oil, starch, gum. Stimulant, demulcent, stomachic; infusion, decoction, tincture. The Chinese Ginseng (Aralia Gin'seng) is very similar to this, slightly larger. Used natively as nervine, aphrodisiac. Dose, 3ss-2 (2-8 Gm.).