SHOOTS 



63 



Fig. 53. Woodbine {Ampelopsle) in a deciduous forest. The tree trunks are almost 

 covered by tbe dense masses of woodbine, wliose leaves are adjusted so as to form 

 com])act mosaics, A lower stratum of vegetation is visible, composed of sbrubs 

 and tall licrbs, shciwing that the forest is some\:hat oi)en. — After 8ciii3ir£U- 



ttides or Itititudes the subter- 

 ranean and prostrate t_y})es of 

 foliage-bearing stems are most 

 common ; and as one passes to 

 lower altitudes or latitndes the 

 erect stems become more nu- 

 merous and more lofty. Among 

 stems of the erect t^ype the tree 

 is the most imiiressive. and it 

 has developed into a great vari- 

 ety of forms or '-habits." Any 

 one recognizes tlie great diiier- 

 ence in the habits of the pine 

 and the elm (see Figs. 50, 

 ,57, 58, 6fi), and many of onr 



Flu. .'j4, a ];ortion of a woodbine 

 {Ampdojm^). The stem tendrils 

 lun'e attached themselves to a 

 smooth wall by means of disk-like 

 suckers. — After STK.\snrr.GEii. 



