Ill 



ANATOMY-STUDY OF THE SHOOT 



27 



division can be subdivided into two classes, w>., leaf-climbers 

 and tendril-climbers. 



A good example of a leaf climber is the familiar Clematis. 

 The upper, younger internode of the Clematis goes wandering 

 round and round in slow circles after the manner of the twining 



FIG. 25. Climbing stem of Honey- 

 suckle. (One-fourth nat. size.) 



FIG. 26. Climbing stem of Con- 

 volvulus. (One-fourth nat. size.) 





plants. This brings the leaves in contact with the stems, twigs, 

 or the trellis-work erected by the hand of man. Such objects 

 as these are seized slowly but surely by the leaf-stalks of those 

 leaves which come in contact with them. The leaf stalks are 

 sensitive and turn round the object touched. 



A tendril is another structure which is sensitive to touch and 



