4o8 



INTRODUCTION TO PLANT GEOGRAPHY 



[chap. 



Fig. 133. — Top of flower-slope below weathering crag in southern Baffin Island. 

 On right is seen flowering Three-toothed Saxifrage (Saxifraga triciispidata), on 

 left Arctic Firevveed {Epilobium latifolium) and Alpine Chickweed {Cerastium 

 alpinum s.l.). In the centre are two species of Fleabane (Erigeron). Knife with 

 handle 12 cm. long gives scale. 



Fig. 134. — Spitsbergen flower-slope dominated by Alpine Arnica (Arnica alpina 



s.l.). The background of swarded cryptogams helps to make this high-arctic 



community look unusually luxuriant. 



