VEGETABLE POWDERS 



465 



Fig. 162. RHUS GLABRA BARK. 



a. Bark parenchyma with compound starch, crystals and yellowish brown 

 resin. 



6. Parenchyma, longitudinal view. 



c. Sclerenchyma cells. 



d. Cork, vertical and lateral views. 



e. Resin. 



/. Wood fibers, porous. 



30 



