110 VINE [CH. 



as having developed from a bud in the axil of the leaf. 

 Thus the stem is made up of segments of different orders, 

 each tendril marking the termination of the lower 

 segment : the whole shoot is, in fact, a sympodium. 



Fig. 49. Vine, Vitis vinifera (Sc). 

 It is, however, by no means always easy to prove 

 whether a tendril is a modified branch or a leaf, and I 

 regard it as of too little importance to the subject to enter 

 into the many hypothetical discussions as to the morpho- 

 lr»gy of the tendrils of certain plants, such as many 



