Brassicaceae 113 



sometimes ciliate at the base. Scapes slen- 

 der, J-6 inches high, hairy or nearly smooth ; 

 racemes few-flowered ; sepals . with a few 

 long hairs or smooth petals of an inch 

 long, pale yellow, darker at the base; pod ' 

 \ of an inch or more long, narrowly 

 oblong, acute at both ends, on pedicels \ of 

 an inch or more long; style distinct. 



In dry, exposed stony places throughout 

 the Rockies, flowering in early spring. 



Draba Stems much branched from the 



oligosperma root, densely tufted at the base. 

 Hook. Leaves erect, linear, obtuse, 



tapering to the base, stiff, ciliate, with stel- 

 late hairs on both sides, especially toward 

 the apex. Scapes naked; flowers racemose; 

 calyx smooth or with scattered hairs, petals 

 white or pale yellow, obovate, | of an inch 

 or more long, pods short, nearly orbicular, 

 acute at the apex, more or less rounded at 

 the base, sparingly short-hairy, | of an inch 

 long; style \ its length. 



Alpine summits and dry ridges throughout 



