VEGETABLE POWDERS 



391 



Fig. 122. JALAPA. 



a. Parenchyma with starch. 



b. Resin bearing cells. 



c. Cork, lateral view. 



d. Outer crystal bearing parenchyma. 



e. Starch bearing parenchyma. 

 /. Large porous ducts. 



g. Starch granules. 



h. Aggregate crystals of calcium oxalate. 



i. Outer cork tissue with reddish coloring matter. 



