STEM STRUCTURE 



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Plate 61. — Wood Structure. 



A. Radial Section, Hematoxylon. 1. Duct. 2. Woody parenchyma. 



Fibers. 4. Medullary ray cells. 



B. Tangential Section, Hematoxylon, 

 3. Fibers, i. Medullary ray cells. 



1. Duct. 2. Woody parenchyma. 



