Ber'beris Aquifo'lium, Berberis, Oregon Grape Fruit, N.F. -- The dried rhizome and roots with not more than 5 p.c. of overground parts or other foreign organic matter -- rejecting pieces over 45 Mm. (1 4/5') thick, or with bark removed; United States, Oregon, California, mountains. Tall shrub, 1.5-2 M. (5-6 degrees) high; leaves coriaceous, evergreen, shining, flowers small, numerous,yellowish-green; fruit purple berry with acid pulp. Rhizome cylindrical, knotty, branched, cut into pieces of varying length, up to 45 Mm. (1 4/5') in thickness, splitting on drying, yellowish-brown, wrinkled; fracture hard, tough; bark 1 Mm. (1/25') thick, separable into layers, wood yellow, radiate, pith small, sometimes eccentic, odor slight; taste distinctive, bitter, on chewing--saliva yellow. Powder, yellowish-brown--medullary rays, wood-fibers, few tracheae, starch grains; solvent: diluted alcohol; contains (bark) berberine 2.35 p.c., oxyacanthine 2.82 p.c., resin, tannin, phytosterin. Alterative, diuretic antiperiodic, tonic, laxative; scrofulous and syphilitic cachexia, chronic eczema, psoriasis, uterine diseases, dyspepsia with constipation. Dose, gr. 10-30 (.6-2 Gm.); 1. Fluidextractum Berberidis (diluted alcohol), dose, mx-30 (.6-2 cc.). 2. Fluidextractum Trifolii Compositum, 10.8 p.c.