VEGETABLE POWDERS 



229 



Fig. 41. ASCLEPIAS TUBEROSA. 



a. Sclerenchyma cells. 



c. Parenchyma, longitudinal view. 



d. Prismatic and aggregate crystals. 



e. Parenchyma with starch and crystals. 

 /. Starch granules. 



g. Reticulate ducts. 



