Bryo'nia al'ba or B. Dioi'ca, Bryonia, Bryony, N.F. -- The dried root with not more than 2 p.c. of foreign organic matter; C. and S. Europe. Perennial climbers, the former monoecious, the latter dioecious; leaves heart-shaped, 5-lobed; flowers small, greenish-white or yellowish; fruit, berries, size of a pea, the former black, the latter red (hence names black and red bryony). Root, spindle-shaped, .3-.6 M. (1-2 degrees) long, lactescent, fleshy, usually in circular slices 1.5-10 Cm. (3/5-4') broad, 3-15 Mm. (1/8-3/5') thick, yellowish, whitish, rough, striate, thin cortex, wood with projecting fibro-vascular bundles in concentric zones; fracture short, mealy, whitish; odor faint, distinct, characteristic, taste bitter, nauseous. Powder, light yellow--starch grains, central cleft, tracheal pores, large yellow cork cells; with sulphuric acid--reddish-brown, then brownish-purple; contains alkaloid (amorphous), bryonol (dihydric alcohol)--both purgative, volatile oil; resin, glucoside (inactive), enzyme, sugar, phytosterol; solvents: alcohol, hot water. Hydragogue cathartic, emenagogue, vesicant, emetic (large doses). Used in dropsy, epilepsy, hysteria, bronchitis, whooping-cough, rheumatism, swollen glands, scabies; large doses poisonous. Dose, gr. 10-60 (.6-4 Gm.); 1. Tinctura Bryoniae, 10 p.c. (alcohol), dose, mxv-60 (1-4 cc.). Infusion, 5 p.c., 3j-2 (30-60 cc.). Mother Tincture (Homeopathic), mv-40 (.3-2.6 cc.); Bryonin, gr. 1/6-1/3 (.01-.02 Gm.).