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MANUAL OF BOTANY 



CHAPTEE V. 



THE STRUCTURE OF THE BOOT. 



Unlike the stem, the root in the Phanerogams always arises 

 in the interior of the tissue of the embryo. In the young embryo, 

 whose formation was spoken of in connection with the seed 



Fig. 763. 



Fig. 763. Polygonum Fagopyrum. Root apex, median longitudinal section. 

 pc. Perioycle, outside boundary of the plerome. v. Rudiment of a vessel, 

 e. Dermatogen. Between pc and e, periblein. h. Root-cap. After De Bary. 



(page 233) , the lower apex is covered by the suspensor. The 

 first root arises at the jmiction of the two, at least one cell of 

 the suspensor taking part in its formation, as will be described 



