410 Rydberg : Rocky Mountain flora 



linear, 2-6 cm. long, 1-3 mm. wide, 1 -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 1 

 mm. long. 



This species is closely related to 5. linifolium, 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, 1895, P. A. Rydberg, 2671 (type) ; Sheri- 

 dan, 1895, L. A. Fitch. 



Utah: Thistle Junction, 1900, 5*. G. Stokes. 



Colorado : Gypsum, 1 894, C. S. Crandall. 



New York Botanical Garden. 



