B 



PLATE 54. Primary Root Structure. 



A. Transverse Section, Sarsaparilla root. 1. Epidermis. 2. Hypodermis. 

 3. Cortical Parenchyma. 4. Endodermis. 5. Sieve tubes. 6. Ducts. 7. Fibers. 

 S. Pith. 



B. Powdered Sarsaparilla root. 1. Epidermis. 2. Hypodermis. 3. Paren- 

 chyma, longitudinal and transverse views, cells filled with starch. 4. Endodermis. 

 5. Acicular crystals. 6. Scalariform vessels or ducts. 7. Fibers. 8. Starch grains, 

 single and compound. 



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