Rydberg : Rocky Mountain flora 421 



leaves 5-8 min. long ; stipules scarious, lanceolate, 1—3 mm. long, 

 more or less united ; leaflets 5-9, linear-lanceolate, conduplicate, 

 pungent, 3-4 mm. long, finely strigose ; flowers usually solitary, 

 subsessile ; calyx strigose; tube 1-1.5 mm. long, campanulate ; 

 teeth subulate, scarcely i mm. long ; corolla ochroleucous, about 

 3 mm. long ; keel tipped with purple ; pod ovoid, rather turgid, 

 acute, 3 mm. long. 



This is related to K. tegetaria (S. Wats) Rydb. \_Astragalus 

 tegetarhis S. Wats.] and K. Wolfii Rydb. From the former it 

 differs in the subsessile flowers and the shorter calyx-lobes ; K. 

 tegetaria has i— 3-flowered racemes, exceeding the leaves in length 

 and calyx-lobes which are longer than the tube. From K. 

 Wolfii, it differs in the appressed pubescence, the smaller flowers 

 and the shorter legume. It is an alpine species growing at an al- 

 titude of 2800-3100 m. 



Yellowstone National Park: August 1884, Tweedy Sj 

 (herb. Columbia Univ.). 



Aragallus patens sp. nov. 



Acaulescent perennial ; leaves spreading or ascending, 5—10 

 cm. long; leaflets 9-17, elliptic or oblong, acutish at both ends, 1-2 

 cm. long, 4—6 mm. wide, somewhat silvery with closely appressed 

 hairs; scape 1-1.5 dm. high, strigose with short silky hairs; 

 raceme short, 3-7 cm. long ; bracts linear-lanceolate to lanceo- 

 late, 5—8 mm. long ; flowers usually spreading ; calyx sparingly 

 appressed-silky with short hairs, often somewhat tinged with pur- 

 ple above, 5-6 mm. long, 3 mm. wide ; teeth subulate, the upper 

 2 mm., the lower 3 mm. long ; corolla dark bluish-purple, about 

 I 5 mm. long ; banner narrow ; wings broad, slightly emarginate,, 

 the upper lobes narrow and acutish ; keel with a very dark purple 

 spot, and a short, porrect tip ; legume ascending-spreading, thin- 

 coriaceous, nearly straight, less than 2 cm. long, 4 mm. thick, 

 long-acuminate, minutely strigose, half 2-celled. 



This is related to A. Laiiibertii and A. sericeiis. From the 

 former it differs in the shorter and broader leaflets and the more 

 spreading leaves ; from the latter in being greener, less hairy, and 

 having narrower bracts and calyx-tube and darker flowers, and 

 from both in the smaller size, thinner and more spreading legumes 

 and smaller flowers. 



Colorado : Plains and foothills near Boulder, 1902, F. Tzvecdy 

 Si6^ (type); between Sunshine and Ward, no. ji6j ; Eldora to 



