461 



Medelpad, Borgsjø, July arctic type. 



Jemtland. Storlien, July temperate » 



» , Åreskutan, August arctic » 



Lappmark, Quickjock, July » » 



» , Jukkasjärvi, July » » 



Luleå Lappmark, Karasjok, July » » 



)) , Abisko, July « » 



Concerning the Swedish material, in Uppland there are 

 circumstances, worthy of a closer investigation with respect to 

 this point; whether a variation in the development of the 

 autumn-rosette occurs here, I cannot say; regarded quite super- 

 ficially it seems so (Fig. 7). Further the specimens from Øland 

 and from the regions around Upsala are distinguished from the 

 others by long, narrow leaves; long, distinct leaf-stems, and 

 extremely long flower-stalks ■ — in all plants grown under 

 favourable circumstances ; whether these forms, however, are 

 produced by climatic or terrestrial influence, I am not able to 

 decide (Fig. S.). (Dried material.) 



Finland and Russia. 



Kajsana?, July arctic type. 



The peninsula of Kola (without further indication) » » 



(Dried material) 

 According to these investigations Greenland exclusively 

 presents the arctic type, the same is the case with the northern 

 and eastern coasts of Iceland; the western and southern coasts 

 of this island, on the other hand, present the temperate one. 

 Probably, however, very complicated circumstances are found 

 on this island, as already suggested by my synopsis. Probably 

 the climatic circumstances, for instance in the inner parts of 

 the fjords, will often cause the existence of the temperate type 

 \n the region, mainly inhabited by the arctic one, and in return 

 the latter will be found in places in the region of the tem- 

 perate one. No doubt the distance from the sea, both verti- 

 cally and horizontally, will also cause great variations in the 



