Rydberg : Rocky Mountain flora 43 



2—5 cm. long, strigose ; leaflets about nine, linear-oblanceolate, 

 2-3 cm. long, usually conduplicate, silky-strigose on both sides; 

 racemes dense, 5—10 cm. long; bracts narrowly lanceolate, not 

 exceeding the buds, deciduous ; calyx gibbous at the base, short- 

 silky with spreading hairs ; lower lip lanceolate, 6-7 mm. long, the 

 upper hardly 4 mm. long, ovate ; corolla 8-9 mm. long, dark- 

 blue, the banner with a lighter spot, somewhat shorter than the 

 wings ; legume densely silky, villous, about 2 cm. long, 6 mm. 

 broad, 3-4-seeded. 



The type was labeled L. argenteus argopliyllns. Its relation- 

 ship is closer however to the true L. aj'geiitens, differing in the 

 smaller, darker flowers, the spreading pubescence on the calyx 

 and pedicels and above all in the shorter upper lip of the calyx. 

 It grows at an altitude of 1 000-2 500 m. 



Saskatchewan: Cypress Hills, \%(^\, JoJin Macoiin 4oyo (type 

 in herb. Columbia Univ.), 



Montana: Spanish Peaks, 1896, Flodnian 62g (in part). 



Wyoming : Big Horn Mountains, 1899, Tweedy 2j6j ; Leckie, 

 1 90 1 , Merrill & Wilcox yjg. 



Lupinus subulatus 



Perennial with a short caudex ; stem 4-5 dm. high, densely 

 silky-strigose, striate, leafy ; stipules subulate ; petioles silky- 

 strigose, 3-6 cm. long; leaflets 7-10, narrowly oblanceolate or 

 linear-oblanceolate, densely appressed, silky on both sides, 2—4 

 cm. long, cuspidate or mucronate ; raceme dense, 1-1.5 dm. long ; 

 bracts subulate-setaceous, much exceeding the buds ; calyx ap- 

 pressed silky-canescent, scarcely gibbous ; lower lip 8 mm. long, 

 narrowly lanceolate, the upper ovate-lanceolate, 6 mm. long ; 

 corolla dark-blue with keel and a spot on the banner light-colored, 

 about I cm. long ; petals subequal, banner rather densely pubes- 

 cent without. 



This is related to L. holosericciis, L. canescens, and L. oreopliilus, 

 but easily distinguished by the long subulate-setaceous bracts. 



Montana: ColumbiaFalls, June 3, 1897, i?. 5. Williams {\.y^€). 



Washington: Spokane, 1898, Piper 282 j ; also 1892, Heji- 

 derson. 



Lupinus flavicaulis 



Perennial with a short caudex ; stems several, with erect 

 branches, densely pubescent with short yellowish spreading hairs, 

 almost velutinous, 3-5 cm. high ; stipules subulate ; petioles 2-4 



