et 



Fig. 16. Dr aba hirta L. 

 (a, Specimen from Iceland collec- 

 ted by Stefânsson, b from Spitz- 

 bergen collected by J. Vahl). 



Fig. 15. Draba hirta L. 

 (Specimen from Norway, Sakka- 

 bani c. 70° collected by 

 Prof. E. Warming). 



