CHAPTER XIII 



CLIMBING PLANTS AND PLANT MIGRATIONS 



It is interesting to notice along waysides and waterways how 

 different varieties of plants dwell in congenial plant societies. 



Many a delicate plant 

 owes its start in life to 

 the protecting branches 

 of some overhanging 

 shrub or forest tree 

 which it afterwards 

 uses to " rise in the 

 world." 



We could not make 

 a satisfactory classifica- 

 tion of climbing plants, 

 because almost any family 

 of plants might have 

 climbing members if 

 their surroundings made 

 climbing necessary. In 

 fact, a plant which may 

 have quite an erect habit 

 out in the open will 

 become tall and slender 

 and in need of sup- 



FiG. 04. — Microloma gets up in the world by twining , . t- 



on stems of other plants. pOrt if grOWmg among 



bushes. 

 Stem Twiners. — Microloma and Cyphia show a common 

 method of climbing by twining. The stems twine from left 



