VEGETABLE POWDERS 



273 



Fig. 62. CASCARILLA. 



a. Parenchyma cells, longitudinal view, with crystals and starch. Two bast 

 cells enclosed. 



6. Parenchyma with starch and resin. 



c. Bast cell. 



e. Outer sclerenchyma, vertical view. 



/. Prismatic and aggregate crystals of calcium oxalate. 



g. Parenchyma. 



h. Outer sclerenchyma, lateral view. 



18 



