456 POWDERED VEGETABLE DRUGS 



161. (Fig. 158.) PYRETHRUM. Pellitory. U. S. 



Tinct. 40. 



Roman pellitory, E. Romische Bertramwurzel, G. Pyrethre, Sali- 

 vaire, Fr. 



The roots of Anacyclus Pyrethrum D. C., Composite. 



Pale brown. 



Aromatic; recalling taraxacum. 



Extremely and persistently pungent. 



Some brown cork tissue. Rather large parenchyma cells, most of 

 which contain inulin. Typical and somewhat elongated sclerenchyma 

 cells. Lumps of yellow resin from the resin bearing ducts. Reticulate 

 and some spiral ducts of medium diameter. Inner parenchyma cells 

 elongated. No starch. 



Ash 5 per cent. 



Not generally adulterated. Taraxacum roots may be added. 



