VEGETABLE POWDERS 



271 



Fig. 61. CASCARA SAGRADA. 



a. Sclerenchyma. 



b. Bast. 



c. Parenchyma with starch. 



d. Crystal bearing fibers. 



e. Parenchyma and medullary ray. 

 /. Medullary ray, tangential view. 

 g. Outer cork. 



h. Parenchyma with aggregate crystals. 



