464 POWDERED VEGETABLE DRUGS 



166. (Fig. 162.) RHUS GLABRA. Sumach Bark. 

 Fl. ex. 30. 



Sumach bark, E. Sumachrinde, G. Sumac, Fr. 



The bark of Rhus glabra L., Anacardiaceae. 



Light brown. 



Nearly odorless. 



Bitter, astringent. 



Brown cork tissue; most cells with reddish brown coloring matter. 

 Bark parenchyma rich in compound starch granules; some cells with 

 reddish brown resin; aggregate crystals of calcium oxalate. Wood 

 fibers; sclerenchyma cells. 



