THE ANGIOSPERMAE : ROOTS 



793 



Conjunctive 

 tissue 



Fig. 788. — Iris germanico. Transverse section of root 

 showing wide cortex with suberized outer zone and 

 small polyarch stele. 



Cortex 



Conjunctive 

 tissue 



Protoxylem 

 Metaxylen) 



Fig. 789. — Iris germanica. Enlarged view^ of root stele. 



26 A 



