410 Rydberg : Rocky Mountain flora 



linear, 2-6 cm. long, 1-3 mm. wide, i -nerved, rather thick and 

 more or less glaucous ; raceme rather few-flowered, lax ; pedicels 

 3-5 mm, long, ascending ; sepals oblong, about 4 mm. long, light 

 yellow ; petals yellow, 6-7 mm. long, spatulate or oblanceolate, 

 obtuse, gradually narrowed into a more or less distinct claw ; pods 

 3-4 cm. long, about 0.75 mm. in diameter, usually more or less 

 arcuate, beak (i. e., portion above the end of the valves) about i 

 mm. long. 



This species is closely related to 6". lijiifoliuvi, but differs in the 

 more slender and more branched decumbent stem, usually nar- 

 rower leaves, smaller flowers, and more slender pods, which are 

 more or less arcuate and with a more distinct beak. It grows on 

 dry plains and hills. 



Montana: Melrose, id>g$, P. A. Rjdberg, 26'/! {iyT^o); Sheri- 

 dan, 1895, L. A. Fitch. 



Utah: Thistle Junction, 1900, 6". G. Stokes. 



Colorado: Gypsum, 1894, C. S. Crandall. 



New York Botanical Garden. 



