Daph'ne Meze'reum, D. Gnid'ium, or D. Laure'ola, Mezereum, Mezereon, N.F. -- Thymelaeaceae. The dried bark from aerial portions with not more than 2 p.c. of foreign organic matter; Europe, Siberia, New England. Small slender herbs, .3-1.3 M. (1-4 degrees) high, branching; leaves 5-7.5 Cm. (2-3') long, obovate sessile, entire; flowers fragrant, tubular, rose red (1), white (2), yellowish-green (3); fruit ovate, bright red (1), scarlet (2), purplish-black (3). Bark in flexible, tough quills flattened strips up to 90 Cm. (3 degrees) in length, .3-1 Mm. 1/75-1/25') thick, yellowish-brown (1), purplish-brown (2), purplish-gray (3), smooth, numerous lenticels, brownish-black apothecia, corky layer easily separable from middle bark, inner surface yellowish-white, satiny, lustrous, finely striate; fracture tough, fibrous; odor slight; taste at first slight, increasingly pungent, acrid. Powder, light grayish-brown--numerous bast-fibers, attenuated ends, walls free from pores, brownish cork cells, starch-bearing medullary rays, few starch grains; solvents; diluted alcohol, boiling water; contains acrid resin, acrid volatile oil, daphnin, wax, sugar, yellow coloring matter, malic acid; by dry distillation yields umbelliferon. Alterative, stimulant, diuretic, diaphoretic, sialagogue, vesicant; syphilis, scrofula, rheumatism, skin diseases; externally -- local irritant like cantharides, applied to indolent ulcers to make them again active, also to maintain discharges from setons, fly blisters, etc. Poisoning; Have voliting, purging, cold sweats, prostration, collapse, convulsions, death -- evacuate stomach with warm demulcent drinks, then milk, fatty oils, opium, stimulants. Dose, gr. 1-10 (.06-.6 Gm.); 1. Fluidextractum Mezerei, (67 p.c. alcohol): Prep.: 1. Linimentum Sinapis Compositum, 20 p.c. 2. Fluidextractum Sarsaparillae Compositum, 3 p.c. Decoction; Extract. Daphne saliciflo'lia; Mexico -- leaves used natively as a vesicant; fruits of the various species contain 31 p.c. of fixed oil.
Transverse section, magnified 15 diam.