Astragalus atropubescens Coult. & Fisch.

Tium atropubescens (Coult. & Fisher) Rydb. Bull. Torrey Club 40:49. 1913.
Astragalus atropubescens Coult. & Fisher. Bot. Gaz. 18: 300. 1893. Astragalus Kelseyi Rydb. Mem. N. Y. Bot. Gard. 1: 241. 1900. Astragalus arrectus Kelseyi M. E. Jones, Rev. Astrag. 161. 1923.
A perennial, with a woody root and short caudex; stems several, 3-4 dm. high, sulcate, strigose; leaves ascending, 7-10 cm. long; stipules deltoid, 3-4 mm. long, spreading; leaflets 15-21, linear or oblong, 8-15 mm. long, 1.5-3 mm. wide, glabrous above, strigose-canescent beneath; peduncles 5-10 cm. long; racemes 3-5 cm. long; bracts lanceolate-subulate, 2-3 mm. long; pedicels 1-2 mm. long; calyx black-hairy, the tube 4 mm. long, 2.5 mm. broad, the teeth subulate, scarcely 2 mm. long; corolla ochroleucous, 13-14 mm. long; banner obovate, moderately arched; wings nearly as long, the blade oblanceolate, falcate, with a large auricle; keelpetals shorter, the blade broadly lunate, more strongly arched towards the obtuse apex; pod glabrous, the stipe about 4 mm. long, the body oblong, 15-20 mm. long, 4 mm. wide and thick, abruptly acute at each end, the upper suture obtuse, the lower sulcate, the cross-section broadly cordate, the septum 1.5 mm. wide.
Type locality: Deer Lodge. Montana. Distribution: Western Montana.