528 POWDERED VEGETABLE DRUGS 



203. (Fig. 195.) VALERIAN. Valerian. U. S. 

 Fl. ex. 60. Tinct. 60. 



Baldrianwurzel, G. Vale"riane, Fr. 



The rhizomes and roots of Valeriana offidnalis L., Valerianaceae. 



Rather light brown. 



Disagreeable, characteristic valerian odor. 



Bitter. 



Some brown cork tissue. Parenchyma cells thick-walled, more or 

 less irregular in form, tangentially flattened, and filled with compound 

 (mostly twos) starch granules. Porous ducts and tracheids and some 

 spiral ducts. 



Ash 15 per cent. 



Adulterated with other roots and rhizomes. Compare German 

 and Engish valerian. 



