295 



Draba, this species is characterized by its narrow rigid, 

 carinate leaves with reflexed margins, and the middlevein is 

 prolonged nearly to the end of the leaves. The clothing 

 varies in quite the same manner as in Draba alpina and 

 Draba Fladnizensis , in that the leaves sometimes have 

 mostly long simple or forked hairs especially at the margins, 

 at other times mostly short branched hairs on the surfaces 

 and only ciliated now and then at the base. Stem and pods 



Fig. 4. Draba glacialis Adams. 

 y. scapis pedicellis siliculisque valde pubescenti-hirsutis Hook. 

 (Specimen from Arctic America, misit W. Hooker). 



generally are glabrous but are also found more or less co- 

 vered with branched hairs. 



The geographical distribution of this species as I under- 

 stand it, is in America from the western Eskimauxland 

 along the Arctic coast, and in Asia at the mouth of the 

 Lena river, the Taimyr peninsula and the Tschuktscher-land. 

 Outside the Arctic regions the plant is found in the Rocky 

 Mountains, the Caucasus and Central-Asia. 



