Gelse'mium semper'virens, Gelsemium, Yellow Jasmine (Root), N.F.--The dried rhizome and roots with not more than 2 p.c. of foreign organic matter; United States, Va. to Fla. Beautiful woody climber; leaves persistent, evergreen, lanceolate, entire, flowers large, yellow, fragrant, poisonous, corolla funnel-shaped; fruit brown, capsule. Rhizome, cylindrical, in pieces 3-20 Cm. (1 1/5-8') long, 3-30 Mm. (1/8-1 1/5') thick, yellowish-brown, wrinkled, transverse fissures, few stem-scars above, numerous roots beneath; fracture tough, splintery; bark thin; wood radiate, excentric; odor slight; taste bitter. Powder, yellowish--tracheae, few bast-fibers, lignified tracheids, starch grains, few calcium oxalate monoclinic prisms, groups of stone cells; solvent: diluted alcohol; contains gelsemine, gelseminine, gelsemic acid (beta-methyl-aesculetin) .3-.4 p.c., volatile oil .5 p.c., 2 resins 4 p.c., starch, gum, pectin. Nervine, sedative, mydriatic, antispasmodic, antiperiodic; closely resembles hemlock in action, and somewhat digitalis, aconite, veratrum viride, antimony; rheumatism, neuralgia, intermittent and yellow fevers, headache, migraine, asthma, chorea, epilepsy, nervous cough, mania. Poisoning: Dim vision, projected eyeballs, dropping of upper eyelid and lower jaw, difficult enunciation, labored breathing, convulsions (strychnine-like), death--evacuants, tannin, cardiac stimiulants: ammonia, strychnine, atropine, digitalis; external heat and friction. Dose, gr. 2-10 (.13-.6 Gm.); 1. Fluidextractum Gelsemii (80 p.c. alcohol), dose, mij-10 (.13-.6 cc.): Preps.: 1. Elixir Sodii Salicylatis Compositum, 1.6 p.c.; 2. Tinctura Gelsemii, 10 p.c. (65 p.c. alcohol). Dose, mx-60 (.6- 4 cc.).