Cuspa'ria Angostu'ra, (Galipe'a Cusparia (officina'lis)), Angustura (Bark); Cuspariae Cortex, Cusparia Bark. The bark, U.S.P. 1820-1870; Northern South America. Tree 4.5-6 M. (15-20 degrees) high, leaves with 3 leaflets, 15-25 Cm. (6-10') long, 5-10 Cm. (2-4') broad, spotted white, tobacco odor, flowers white; bark in flat, curved, or quilled pieces 2.5 Mm. (1/10') thick, ochrey-gray, friable periderm, inside cinnamon-red, striae of calcium oxalate, aromatic, bitter; contains volatile oil, resin, angusturin, 4 alkaloids. Used for diarrhea, dysentery, dyspepsia, typhoid, stimulant, febrifuge, large doses emetic; in infusion, tincture, extract. Dose, gr. 10-30 (.3-2 Gm.) False Antustura Bark (Strychnos Nux-vomica) has stone-cells, no striae of calcium oxalate; is very bitter, not aromatic, contains strychnine, brucine.
Angustura bark; one-half natural size.