PLATE 89 



Cross-section of Root of Spigelia marylandica, L. 

 I. Epidermis. 2. Cortical parcnrhyma. 2'. Intercellular space. 3. En- 

 dodcrmis. 4. Pcricyclc. 5. Cambium, 6. Xylem. 7. Pith. 



