190 



POWDERED VEGETABLE DRUGS 



Fig. 6. ACONITUM FISCHER!. 



a. Sclerenchyma cells, nearly colorless. 



b. Sclerenchyma cells, nearly colorless. 



c. Sclerenchyma cell from cork layer, deep reddish brown. 



d. Parenchyma cells bearing starch, transverse view. 



e. Parenchyma cells, longitudinal view. Starch granules mostly simple, 

 rarely two and three compound. Large number of aggregate granules, many of 

 which become separated in powdering showing the pentangular simple granules. 



/. Ducts. 



The distinguishing histological characteristics between A. Napellus and 

 A. Fischeri are: In A. Fischeri the cell-walls are as a whole thinner, particularly of 

 the parenchyma cells. Sclerenchyma cells are more abundant and more elongated. 

 Starch granules mostly simple with many aggregate granules and polygonal 

 simple granules. 



It would be difficult to detect admixtures of the two roots in powdered form. 



