VEGETABLE POWDERS 



541 



Fig. 201. XANTHOXYLUM. 



a. Parenchyma with crystals and granular contents. 

 6. Parenchyma and resin cells (c). 



d. Sclerenchyma. 



e. Bast. 



/. Collenchymatous tissue. 

 g. Outer bark parenchyma. 



