Vibur'num prunifo'lium, Viburnum, Black Haw, N.F. -- The dried root-bark, with not more than 7 p.c. of wood or other foreign organic matter, yielding not more than 3 p.c. of acid-insoluble ash: United States, New York to Florida. Handsome shrub, 3-6 M. (10-20 degrees) high; leaves 2.5-5 Cm. (1-2') long, 12-16 Mm. (1/2-2/3') broad, serrate' flowers white cymes; fruit oval, black drupe (berry), sweet, edible. Bark, in irregular, transversely curved, quilled pieces, 1.5-6 Cm. (3/5-2 2/5') long, .5-1.5 Mm. (1/50-1/16') thick, grayish-brown, or, where outer cork has scaled off, brownish-red; wrinkled, inner surface reddish-brown, striate; fracture short, uneven; odor strong, sourish; taste distinctly bitter, somewhat astringent. Powder, dark brown -- many stone cells, calcium oxalate rosette aggregates, prisms, lignified cork tissue, parenchyma cells, starch grains, few bast-fibers; solvent: 67 p.c. alcohol; contains viburnin, valeric acid, resin (brown, bitter) 2.5 p.c., tannin, sugar, salts, ash 8-9 p.c. Diuretic, tonic, antispasmodic, nervine, astringent; in threatened abortion, nervous diseases of pregnancy, dysmenorrhea, menorrhagia, after-pains, asthma, hysteria. Dose, 3ss-2 (2-8 Gm.); 1. Fluidextractum Viburni Prunifolii (67 p.c. alcohol): Prep.: 1. Elixir Viburni Prunifolii, 12.5 p.c., dose, 3j-2 (4-8 cc.). Extract, gr. .3-10 (.2-.6 Gm.). Decoction, 5 p.c., Infusion, 5 p.c., each, 3j-2 (30-60 cc.).