Studies on the Rocky Mountain Flora— VIII 



By Per Axel Rydberg. 



Stanleya arcuata sp. nov. 



Perennial with a ligneous caudex, 4—10 dm. high, perfectly 

 glabrous ; stem light green and shining, in age straw-colored : leaves 

 entire or the lower with short and broad lobes, lanceolate, long- 

 petioled, thick, 5—12 cm. long ; pedicels rather short, in fruit, about 

 I cm. long : sepals yellow, linear about i 5 mm. long ; petals yel- 

 low ; blades y—S mm. long, broadly elliptic, almost as long as or at 

 least two thirds as long as the claw : pods 7-10 cm. long, strongly 

 arcuate, and spreading. 



This species is nearest related to ^^ iiitegrifolia, but is taller, 

 more shrubby, with narrower leaves and broader petals. 6". piii- 

 nata (Pursh) Britton, with which both have been confused, has 

 hairy leaves, most of which are deeply pinnatifid, and the blades 

 of its petals are linear oblong and only one third or one half as 

 long as the claws. 6". arcuata grows in dry regions from Wyoming 

 to Nevada and south to Colorado and Arizona ; probably also in 

 California. 



Nevada : Unionville V^alley, 1868, S. Watson, 10 j (type in 

 herb. Columbia University). 



Stanleya canescens sp. nov. 



Stout perennial .5—1 m. high ; stem light green, finely puberu- 

 lent or glabrate, terete : leaves grayish puberulent, the upper entire 

 and oblanceolate, 5-7 cm. long ; the lower pinnatifid with oblong 

 lateral lobes and a large oval or elliptic end-lobe : raceme dense, 

 pedicels short, in fruit i cm. or less long, divergent : sepals linear, 

 about I 2 mm. long ; blades of the yellow petals linear-oblong, about 

 half as long as the claw : pods arcuate, spreading, 5—7 cm. long. 



This is nearest related to the preceding, differing in the puberu- 

 lent leaves, which are shorter and broader and more inclined to be 

 pinnatifid. 



Utah : Frisco, 1880, M. E. Jones, iSog (type in herb. N. Y. 

 Bot. Garden). 



Arizona: Fort Verde, 1887, E. A. Meariis ; Verde River, 

 1883, H. H. Riisby ; Mexican Boundary Survey. 



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