POWDERED VEGETABLE DRUGS 



122. (Fig. 123.) JUGLANS. Butternut-bark. 

 Fl. ex. 60. Ex. 30. 



Butternussrinde, Graue Wallnussrinde, G. Ecorce de noyer gris, Fr. 



The inner bark of the roots of Juglans cincerea L., Juglandaceae. 



Very dark brown. 



Somewhat aromatic. 



Bitter, pungent. 



More or less of the outer bark is usually present, which consists 

 of suberized cells bearing granular dark brown coloring matter. 

 Inner bark parenchyma of rather small, loosely united cells, many of 

 which contain a deep brown resin or aggregate crystals of calcium 

 oxalate. Typical long, thick-walled, finely porous bast fibers are 

 plentifully present. 



The bark of Juglans regia (English walnut) and J. nigra (black 

 walnut) is similarly used, but perhaps not often as an adulterant of the 

 above. 



Fig. 123. 



o. Parenchyma cells with coloring matter and crystals. 



b. Parenchyma, longitudinal view. 



c. Bast fibers. 



d. Cork, profile view. 



e. Aggregate crystals of calcium oxalate. 



