400 POWDERED VEGETABLE DRUGS 



127. (Fig. 128.) LEPTANDRA. Leptandra. 

 Fl. ex. 60. 



Culver's root, Culver's physic, black-root, E. Leptandra Wurzel, 

 G. Racine de leptandra (de ve"ronique, de Virginie), Fr. 



The rhizome and roots of Veronica virginica L., Scrophulariaceae. 



Gray-brown. 



Odorless. 



Bitter, feebly pungent. 



Some cork tissue from the rhizome. Epidermal cells of rootlets, 

 with outer walls dark and greatly thickened. Root parenchyma cells 

 rectangular, elongated, with some very small simple spherical starch 

 granules and smoky brown resin. Numerous tracheids, some spiral 

 ducts. Larger, more typical parenchyma, with small spherical starch 

 granules, of rhizome. 



Ash 6 per cent. 



UsuaUy contains admixtures of other roots. 



