VEGETABLE POWDERS 



483 



Fig. 171. SASSAFRAS. 



a. Inner bark parenchyma cells with starch and oily contents, transverse view, 



I). Bast fibers. 



c. Thick-walled sclerenchyma cells. 



d. Parenchyma cells, longitudinal view. 



e. Outer cork cells with bright red contents. 

 /. Thin-walled sclerenchyma cells. 



