VEGETABLE POWDERS 



533 



Fig. 197. VERATRUM V1RTOE. 



a. Parenchyma cells with starch. 



b. Raphides. 



c. Epidermal cells vertical view. 



d. Sclerenchyma cells of endoderm, transverse view. 



e. Ducts and tracheids. 

 ./. Spiral duct. 



