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A TEXTBOOK OF THEORETICAL BOTANY 



Cortex 



Fig. 786. — Ramincuhis repens. Transverse section of 

 root showing wide cortex containing starch grains, 

 and small tetrarch stele. 



Cortex 



Protoxylem 



Endodermis 



Metaxylem 



Fig. 787. — Ranunculus repens. Enlarged view of root stele showing 

 metaxylem in course of centripetal differentiation. 



