Cyt'sus Scopa'rius, Scoparius, Broom Tops, N.F. -- The dried tops with not more than 5 p.c. of stems over 3 Mm. (1/8') thick nor 2 p.c. of other foreign organic matter; W. Asia, S. Europe, United States. Shrub 1.2-2.4 M. (4-8 degrees) high, with many pentangular, wand-like branches in close fascicles--suitable for broom-making; leaves downy, trifoliate; leaflets sessile, 6-12 Mm. (1/4-1/2') long, lanceolate; flowers numerous, large, brilliant yellow, papilionaceous; fruit pod, 4 Cm. 1-3/5') broad, compressed. Tops -- stems thin with branched twigs, 1-3 Mm. 1/25-1/8') thick, angled, winged, dark green, nearly glabrous, many brownish cork patches; internally yellowish; fracture short-fibrous (thin), tough and splintery (thick); leaves scarce; odor slight on bruising more distinct; taste disagreeable, bitter. Powder, dark green -- non-glandular, non-lignified hairs, chlor-enchyma, stomata, pith and wood parenchyma, tracheae, starch grains, pollen grains; solvent: diluted alcohol; contains sparteine (colorless oily liquid alkaloid) .3 p.c., scoparin (diuretic), volatile oil, tannin, fat, wax, sugar, ash 5 p.c. Cardiac stimulant, narcotic, diuretic, poisonous, large doses paralyze respiratory and motor centers, causing convulsions and death by asphyxia; cardiac affections palpitation -- inferior to digitalis, although quicker and without cumulative tendency. Poisoning: similar to digitalis in effect and treatment. Dose, gr. 15-30 (1-2 Gm.); 1. Fluidextractum Scoparii (diluted alcohol). Decoction, Infusion, each 5 p.c., 3j-2 (30-60 cc.); juice, 75 p.c., + alcohol 25, 3j-2 (4-8 cc.); sparteine sulphate, gr. 1/6-1/2 (.01-.03 Gm.); scoparin, gr. 1-10 (.06-.6Gm.). Spar'tium jun'ceum, Spanish Broom--leaves soft, hairy; seed reniform; properties similar to Cytisus Scoparius; fibers used for cordage, coarse cloth, etc.