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 (7. ¢., portion above the end of the valves) about I 
mm. lon 
This species is closely related to S. /:nifolium, 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) 5 Sheri- 
dan, 1895, Z. A. Fitch. 
Uran: Thistle Junction, 1900, S. G. Stokes. 
Cotorapo: Gypsum, 1894, C. S. Crandall. 
New YorkK BOTANICAL GARDEN, 
