Structural Characteristics **' 



121 



had been shortened to four 

 inches none of which then had 

 rootlets and all its other roots 

 had been removed entirely, and 

 it was again lifted the following 

 August and photographed. At 

 this time all the new roots (those 

 sent out directly from the rhi- 

 zome after the transplanting) 

 were removed before photo- 

 graphing, to give a better view 

 of the three shortened roots and 

 their new growths. 



The roots and their rootlets 

 furnish nourishment from the 



ground mainly through root- VT . r _ 



' J & FIG. XIV. THREE SHORTENED 



hairs which are developed On ROOTS (shortened at i, 2, and 



, r,^, , . 3) AND THREE MONTHS* ROOT- 



them. 1 hese begin tO COme LET s PRODUCED THEREFROM 



shortly after the root has made AFTER THE SHORTEN ' NG 

 its appearance, on its whole 



surface for a short distance from its extremity. They 

 are so small that they can hardly be seen except by 

 the aid of a magnifier and appear as fine glistening 

 lines. They attain a length of hardly a tenth of an 

 inch, and are very numerous. They are short lived 

 but new ones develop in front of them as the root 

 lengthens. When a rhizome with growing roots is 

 taken up, however carefully, the root-hairs will un- 

 doubtedly be destroyed; but if the rhizome is replanted 

 while the roots are yet plump and in such good, fresh 

 condition that they continue alive, new root-hairs will 



