432 POWDERED VEGETABLE DRUGS 



147. (Fig. 145.) PAREIRA. Pareria. 

 Fl. ex. 30. 



Grieswurzel, G. Racine de butua, Fr. 



The roots of Chondodendron tomentosum Ruiz et Pavon, Meni- 

 spermaceae. 



Light yellowish brown. 



Nearly odorless; somewhat musty. 



Bitter. 



Parenchyma cells medium sized to rather small, with compound 

 starch; granules in twos and threes, rarely fours. Outer tissue filled 

 with coloring matter. Typical, medium sized, porous sclerenchyma 

 cells; bast fibers; porous tracheids and large porous ducts. 



Ash 4 per cent. 



Adulterated with roots of various more or less closely related 

 plants and stems of the official plant. 



