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O. GJiCREVOLL 



another West Arctic species, Potent ilia hyparctica, new to Scandinavia. In 

 Eurasia this species was previously known from Kanin, Vaygach, Novaya 

 Zemlya and Spitsbergen. 



Fig. 8. Important botanical indications of refugia in the district of Nordland, 

 Norway. Arenaria huinifusa (dots); Papaoer radicatum ssp. subglobosiim (asterisks); 

 Carex scirpoiclea (triangles); Saxifraga aizoon ssp. laestadii (squares); Draba 

 crassifolia (crosses); and Potent ilia hyparctica (circles with cross) (partly after 



Nordhagen, 1935). 



6. Another interesting West Arctic species is the dioecious Carex scirpoidea, 

 known from a single mountain in Saltdal, the only locality in Europe. It is 

 widely distributed in Greenland and North America (Fig. 9). According to 

 my own experience in Alaska it is a species with a very wide ecological ampli- 

 tude. In the Norwegian locality Mt. Solvagtind, it grows in abundance, but 

 within a very narrow ecological limit. It has not been able to disperse to the 

 neighboring mountains where the conditions seem to be very suitable. It 

 gives the impression of a depauperated relic, and I am inclined to believe 

 that C. scirpoidea inhabits just the very area where it survived the glaciation, 

 i.e. on the south-facing slope of the nunatak Mt. Solvagtind. According to the 

 geologist Gunnar Holmsen, Mt. Solvagtind is supposed to have been a 

 nunatak. 



