CRUDE DRUGS. 



497 



An Indian variety contains from i to 2.5 per cent, of oil and 

 is mostly preferred. 



CIMICIFUGA.— BLACK SNAKEROOT, BLACK CO- 

 HOSH. — The dried rhizome and roots of Cimiciftiga raccinosa 



Fig. 217. Cimicifuga. Transverse section of the central part of a mature root in 

 which the secondary changes are completed; a, parenchyma; b, endodermis; c, cambium 

 zone: d, tracheae in secondary xylem; e, broad, wedge-shaped medullary ray: f, outer 

 portion of one of the primary xylem bundles; g, parenchyma beneath the endodermis; 

 h, inter-fascicular cambium. — After Bastin. 



(Fam. Ranunculaceae), a perennial herb (Fig. 140), indigenous 

 to Asia, Eastern Europe and North America (p. 268). The drug 

 is collected in autumn, the United States furnishing the principal 

 supply. 



.S2 



