SURVIVAL OF PLANTS ON NUNATAKS IN NORWAY 



281 



chromosome structure and at the same time they are also phenotypically 

 distinct. As seen from Fig. 22, their areas as well are separated : 



Fig. 22. The distribution in Norway southern of the different races of Papaver 

 radicatiim, based on the recent investigations by G. Knaben. Explanations in the 



text. 



Papaver radicatum ssp. 



(1) relictum, Valdres-Sogn 



(2) intermedium, Jotunheimen 



(3) ovatilobum. Central Dovre 



(4) gjaerevollii, Trollheimen 



(5) groevudalense, Sunndal Mts. 



(6) oeksendalense, Oksendalen 



Within the different races, the populations display shght alterations 

 in their chromosome structure, but Dr. Knaben is of the opinion that this is 

 due to recent changes. Furthermore, she has shown that the differences in 



