Plate 56. — Primary Stem Structure (Monoootyledonous). 



A. Transverse Section, Triticum Rhizome. 1. Epidermis. 2. Hypodermis. 

 3. Cortical parenchyma. 4. Endodermis. 5. Fibers, surrounding sieve and ducts. 

 6. Sieve. 7. Ducts. 8. Concentric fibrovascular bundle. 9. Pith parenchyma. 



B. Powdered Triticum Rhizome. 1. Epidermis. 2. Hypodermis. 3. Paren- 

 chyma, longitudinal view. 4. Endodermis. 5. Fibers. 6. Vessels. 



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