310 



D. gracilis Ledeb. is a thin form of D. incana Avith only 

 few leaves on the stem. Such weak plants have been often 

 taken for D. hirta. 



In Arctic regions D. incana is found in the Western 

 Eskimaux-land , on the Arctic coast of America, in West 

 Greenland to 70° in East Green 1. only to 61°, on Kolguev 

 and in Asia in the Tschuktscher-land, Beyond found in 

 Northwestern America, Iceland, Faroe islands, British islands, 

 Scandinavia, Denmark in the northern part of Jutland, Russia, 

 Siberia, the Ural, Altai and Baical Mountains, the Himalayas 

 and Kamtschatcha. 



Draba aurea M. Vahl 



is described and figured in Flora Danica t. 1460. The plant 

 has the habit of D. incana, but is more felted, the leaves 

 generally entire, the flowers yellow, the pods pointed with 

 long styles. Seems most commonly to be perennial (Fig. 20). 

 Only found in Greenland both East and West up to 70"^ 

 and in North America especially in the West. 



