62 



PLANT STUDIES 



tlio light without developing such structures in the stem 

 as would enable it to stand upright. 



47. The erect type.— This type seems altogether the 

 best adapted for the proper display of foliage leaves. Leaves 



i. 52. Pattfioii-llow CI' vines climbing supporls by means of tendrils, which may be 

 seen more or less extended or coiled. The two types of leaves upon a single stem 

 may also be noted. 



ca.n be sent init iii all direi'tions and carried upward to- 

 wards the light ; hut it is at tlie expense of developing an 

 elaborate mechanii.-d system to enalile the stem to retain 

 this ]Hisitioii. There is an interesting relation lietween 

 these erect bodies and zones of temperature. At high alti- 



