490 POWDERED VEGETABLE DRUGS 



183. (Fig. 175.) SENEGA. Senega. U. S. 

 Fl. ex. 30. 



Senega, snakeroot, E. Senegawurzel, G. Polygale de Virginie, ;Fr. 



The roots of Poly gala Senega L., Polygalacese. 



Light yellowish brown. 



Peculiar, heavy, somewhat rancid odor. 



Sweetish, pungent. 



Parenchyma cells elongated; many of them collenchymatous; 

 phlcem groups distributed through parenchyma. No cell contents 

 excepting fat. Outer yellowish cork. Numerous tracheids and 

 porous ducts. 



Ash 5 per cent. 



Compare with the western varieties with which the above is 

 frequently adulterated. Other adulterants may also be suspected. 



