Cola ni'tida, Kola, Cola,N.F. -- The dried cotyledon of this or other species with not more than 1 p.c. of foreign organic matter, yielding not less than 1 p.c. of caffeine; W. Africa, W. Indies; cultivated. Tree 15-20 M. (50-65 degrees) high, smooth stem, leaves 15-20 Cm. (6-8') long, lanceolate-ovate, acuminate, flowers, staminate and pistillate, yellowish, fruit yellowish-brown, 5 segments, rough woody, follicle 10-13 Cm. (4-5') long, each segment 1-3-seeded. Cotyledon (seed) irregularly plano-convex, broadly oval, circular, 2.5-5 Cm. (1-2') long, heavy, hard, tough; brown, outer surfaces wrinkled, inner lighter and smoother, slightly incurved and sharp; odorless; taste slightly astringent. Powder, reddish-brown--numerous starch grains, some altered, many show lamellae and circular hilum or a central fissure, many parenchyma cells; solvent: diluted alcohol; contains caffeine (kola-tannate) 2.7-3.6 p.c., theobromine, starch 34-42 p.c., tannin, kola-red, kolatin, volatile oil--kolanin is a mixture of kola-red and caffeine, kolatine (only in fresh nuts, which should not be used, action opposite to caffeine). Stimulant, tonic, nervine, diuretic, astringent, similar to coffee, but resembles coca in aiding the endurance of fatigue without food; neuralgia, headache, migraine, diarrhea, indigestion, weak and irregular heart. Dose, gr. 15-30 (1-2 Gm.); 1, Fluidextractum Kolae (67 p.c. alcohol), dose, 3ss-1 (2-4 cc.). Elixir, 8 p.c., 3j-3 (4-12 cc.); Tincture, 15 p.c. (diluted alcohol), 3j-2 (4-8 cc.).
Cola nitida: a, leafy branch, ½ nat. Size; also longitudinal section of fruit, cross and natural longitudinal section of seed showing embryo enlarged.