Cur'cuma Zedoa'ria, Zedoaria, Zedoary, N.F. -- The dried rhizome with not more than 2 p.c. of foreign organic matter; India, largely cultivated. Perennial reed-like plant. Rhizome (tuber) occurs as into transverse rounded sections, twisted, wrinkled, 1-4 Cm. (2/5-1 3/5') broad, 5-10 Mm. (1/5-2/5') thick, grayish-brown, hairy, rough, few root-scars, transverse surface brownish, dark circular endodermis separates cortex from central cylinder; stele with yellowish resin cells, lighter fibro-vascular bundles, fewer in cortex; fracture short, mealy, waxy; odor aromatic, camphor-like; taste aromatic, warm, bitter. Powder, brownish -- numerous starch grains and thick-walled hairs, parenchyma, few bast-fibers; no calcium oxalate crystals or stone cells; contains volatile oil .5-1 p.c., resin (pungent taste), starch, mucilage, ash 7 p.c. Stomachic, aromatic, stimulant; dyspepsia, flatulence -- weaker than ginger. Dose, gr. 10-30 (.6-2 Gm.); 1. Pilulae Antiperiodicae, 1/8 gr.; 2. Tinctura Amara, 2 p.c. 3. Tinctura antiperiodica, 1/5 p.c.