THE BRYOPHYTA OF ICELAND 



645 



coastal districts, and on the low land wilh the neighbouring heighls. 

 The high land of the interior, which is about 90,000 km-, in dimen- 

 sion and, usuaily, 600 — 1000 metres in height, is from a botanical 

 point of view practically unknown. Outside the JokuUs it consists 

 almost everywhere of gravelly flals which are practically bare of 

 vegetation. According to Thorodd sen, however, there are in some 

 piaces extensive mountain-bogs, but the Bryophyte vegetation of 

 these is quite unknown. 



Table IV. The Frequency of the Species in the difFerent Districts 



of Iceland. 



