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 Ciniicifnga raccmosa 



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. Ranunculacese), 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. 



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