VEGETABLE POWDERS 



541 



Fig. 201. XANTHOXYLUM. 



a. Parenchyma with crystals and granular contents. 



b. Parenchyma and resin cells (c). 



d. Sclerenchyma. 



e. Bast. 



f. Collenchymato us tissue. 



g. Outer^bark parenchyma. 



