1915] 



W1LLE FLORA OF NORWAY 83 



Artemisia norvegica, whose province of distribution in Nor- 

 way is on the Dovre and adjoining mountains in the north- 

 west (Troldheimen), some of which could scarcely have been 

 covered with ice during the Last Glacial Period. It is even 

 possible to name, with considerable accuracy, some of these 

 plants, as they form the "Greenland element' ' in the arctic 

 flora of Norway. I designate as such those plants which 

 Norway has in common with Iceland, Greenland, or the north 

 of North America, but that are not found in western Siberia. 

 These are as follows: 



Arnica alpina is found in the north of Norway from Salten 

 to Alten, and also in the north of Sweden, on the Kola Penin- 

 sula and Novaja Semlja, but not again until the east of 

 Siberia is reached. It is also found in Greenland and on the 

 Alps. 



Campanula uni flora is found in Norway from Lorn to 

 Reisen, in Swedish Lapland and Novaja Semlja, but elsewhere 

 only in Greenland and arctic North America. 



Carex nardina is found in Norway from Salten to Kvaen- 

 angen, and in Swedish Lapland, but elsewhere only in Ice- 

 land, Greenland, and arctic North America. 



Carex scirpoidea is known in Norway in Salten, and else- 

 where only in eastern Siberia and western Greenland. 



Draba crassifolia is found in Norway, 'round Tromso, but 

 otherwise only in Greenland. 



Pedicularis flammea is found in Norway from Salten to 

 Lyngen, and in Swedish Lapland, but elsewhere only in Ice- 

 land and Greenland. 



Plat anther a obtusata is found in Norway in Reisen and 

 Alten, but otherwise is known only from eastern Siberia and 

 arctic North America. 



A fact that possesses peculiar interest in the study of the 

 occurrence of these and other similar species of plants in the 

 Norwegian mountains, is the discovery in central Norway 

 of interglacial remains of Elephas primigenius and Ovibos 

 moschata. These great mammals became extinct at the begin- 

 ning of the Last Glacial Period, but some of the plants that 

 lived at the same time found a dwelling place upon the iceless 



