VEGETABLE POWDERS 



195 



Fig. 9. ALTHAEA. 



a. Parenchyma with mucilage cells, starch and aggregate crystals. 



6. Bast cells. 



c. Parenchyma, longitudinal view. 



d. Starch granules and crystals. 



e. Tracheids. 



/. Parenchyma, longitudinal view. 



