80 



NORTH AMERICA 



a coastal fringe, to the Arctic islands, and reaches a great 

 development in western Greenland. 



The specific feature of the American tundra, as com- 

 pared with those of Siberia and Greenland, is the 



ED Tundra 



mill J-> C oniferous 



^Pacific Temperate 

 ^Mediterranean 

 _N/1 ixed Tempe rate 



Warm B Steppe 



HotWek 



O -Scrub 

 Savana CD Deser 



FIG. 23. Vegetation of North America. 



wealth and extent of its lichen carpets ; the cold desert 

 seems to be drier here than in Europe and Asia. 

 Though the ling heath is entirely absent from America, 





