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FOUNDATIONS OF BOTANY 



FlG. 14. Lower Part of Stem and Knots of Indian Corn, showing Aerial 

 Roots ( " Brace-Roots " ). 



a, c, internodes of the stem ; b, d, e,f, nodes of various age bearing roots. Most of 

 these started as aerial roots, but all except those from b have now reached the earth. 



