388 



INTRODUCTION TO PLANT GEOGRAPHY 



[chap. 



Fig. 112. — Aiesophync Sedye-Cjiass tundra on the north coast of Alaska near 

 Point Barrow, o^•erlooking the Arctic Ocean. Ice-pups are seen stranded on the 

 shore, and in the distance the margin of the polar pack-ice is visible. The tundra 

 in flat areas is usually closed ; but on slopes, where disturbed by geodynamic 

 influences, it is commonly discontinuous. 



1" I ' ~ in a of damp ' hillock tundra ' on I 111 I I I of Spitsbergen. 



Note the grassiness of the hummocks but frequent puddles of water between. 



