m 



KfX^ 



^ 



Fig. 19. 



Drdba incana L. 



^ii nat. size. 



(SpecimeD from Iceland 



collected by Stefansson). 



Fig. "20. 



Draba aurea M. Vahl. 



^h nat. size. 



(Specimen from West (ireenland 65"45' 



collected by J. A. D. Jensen). 



