414 POWDERED VEGETABLE DRUGS 



137. (Fig. 136.) MENISPERMUM. Menispermum. 

 Fl. ex. 60. 



Canadian moon seed, yellow parilla, E. Canadisches Mondkorn, 

 G. Me"nisperme du Canada, Fr. 



The rhizomes and rootlets of Menispermum canadense L., Meni- 

 spermacese. 



Ash gray. 



Faint soil odor; nearly odorless. 



Bitter. 



Outer layer of suberized tissue. Rather small-celled polygonal 

 hypodermal tissue through which are scattered a few sclerenchyma 

 cells. Typical bast tissue; tracheids and very large porous ducts 

 with medullary rays. Large-celled pith with some simple starch 

 granules resembling those of corn. Some thick-walled very coarse 

 parenchyma. 



