PLATE 33 



Porous and Non-Striated Stone Cells 

 . Ceylon cinnamon (cinnamomum zeylanicum, Nees). 

 . Calumba root (Jateorhiza palmata, [Lam.] Miers). 

 . Dogwood root bark (Cornus fiorida, L.). 

 . Cubeb {Piper cubeba, L., f.) 

 . Echinacea (Echinacea angustifolia, D.C.). 



