Hu'mulus Lu'pulus, Humulus, Hop, N.F. -- The carefully dried strobile bearing its glandular trichomes with not more than 2 p.c. of stems, leaves, or other foreign matter, yielding not more than 5 p.c. of acid-insoluble ash; N. Temperate Zone -- N. America, C. Asia, cultivated. Perennial herbaceous twiner (left to right), stems several, 6 M. (20 degrees) long, flexible, flowers dioecious, pistillate greenish, cone-like spikes producing the fruit. Strobile (fruit) ovoid-cylindrical, 3 Cm. (1 1/5') long, flexuous rachis, numerous yellowish-green membranous scales, the base of each with numerous brownish glandular hairs (lupulin) and enclosing a glandular achene; odor strong, characterist -- disagreeable, valerian-like on aging; taste aromatic, bitter; should be kept dark, in tightly closed containers. Powder, yellowish-green -- parenchyma cells with calcium oxalate rosettes, branching tracheae, non-lignified hairs, glandular hairs with yellowish oil, few pollen grains, large cells with calcium carbonate cystoliths; solvents: diluted alcohol, boiling water; contains volatile oil .8 p.c., choline (lupuline), resin (3) 9-18 p.c., trimethylamine, tannin (lupulo-) humulo-tannic acid, sugar, salts. Tonic, stimulant, nervous, sedative, anodyne, hypnotic; nervous insomnia, dyspepsia, delirium tremens, hysteria, irritable bladder, rheumatism, abscesses (poultice). Dose, 3ss-1 (2-4 Gm.); 1. Fluidextractum Humuli (alcohol 5 vols., water 3), dose, mxv-60 (1-4 cc.); 2. Tinctura Humuli, 20 p.c. (diluted alcohol), dose, 3j-2 (4-8 cc.). Infusion, 5 p.c.; extract, elixir, poultice.

Lupulinum, Lupulin, N.F. -- The glandular trichomes separated from the strobiles, yielding not less than 60 p.c. of ether-soluble extractive nor more than 10 p.c. of acid-insoluble ash. It is a yellowish-brown, granular powder, characteristic odor and taste of hop, being obtained therefrom by removing scales, shaking, and rubbing glands through fine sieve -- yield 8-16 p.c.; trichomes globular, ellipsoidal, .1-.3 Mm. (1/250-1/80') broad, layer of secreting cells in form of shallow cup, the cuticle on inner surface being separated by secreted yellowish oleoresin; should be kept dark in tightly closed containers and when dark reddish and of disagreeable valerian-like odor from aging must not be used. Dose, gr. 5-15 (.3-1 Gm.); 1. Fluidextractum Lupulini (alcohol), dose, mv-30 (.3-2 cc.). Oleoresin (acetone, ether) gr. 5-15 (.3-1 Gm.) Tincture, 12 p.c. (alcohol); Pills (excipient)--little ether, or heat, or brisk rubbing with spatula.