PLATE 90 



RUELLIA ROOT (Ruellia ciliosa, Pursh.). 



I. Epidermis with root hair. 2. Parenchyma cells with dark content-. 

 3. Sclerid. 4. Parenchyma without dark cell contents. 5. Endodermis. 

 6. Bast fibers and phloem. 7. Cam!. him. 8. Xylem. 10. Pith. 



