CLIMBING PLANTS, 



107 



means of perpetuating the species. So we 

 have more regard for climbing plants when 

 we learn that their graceful climbing raises 

 them into the sunlight which is necessary 

 for their growth. Many more plants can 

 grow upon any piece of ground if a part of 



Fig. 82, 



them are climbers, than if all are stiff- 

 stemmed plants which crowd each other. 



We may make five tolerably definite di- 

 visions of climbing plants, based upon the 

 manner in which they climb : scramblers, 

 root-climbers, leaf-climbers, twiners, and ten- 

 dril-climbers. The scramblers are not true 



