PLATE 92 



8 



CROSS-SECTION OF RHIZOME OF RUELLIA CILIOSA, Pursh. 

 I. Epidermis. 2. Cystolith. 3. Stone cell. 4. Cortical parenchyma. 

 5. Bast fibres. 6. Pericycle. 7. Xylem. 8. Pith. 



