Astragalus albens Greene

Hamosa albens (Greene) Rydb. Bull. Torrey Club 54:22. 1927.
Astragalus albens Greene, Bull. Calif. Acad. 1: 156. 1885.
A perennial, with a deep root and short eaudex; stems many, decumbent or spreading, 2-5 dm. long, strigose with white hairs, flexuose; leaves 3-6 cm. long, spreading; stipules deltoid, 3-4 mm. long, sparingly strigose; leaflets 7-11, broadly obovate, 5-10 mm. long, silvery on both sides, mostly rounded at the apex; peduncles 3-5 cm. long; racemes elongate, about as long; bracts subulate, 1 mm. long; pedicels 1-1.5 mm. long; calyx silvery, the tube 2 mm. long, the teeth subulate, 1 mm. long; corolla purple, about 8 mm. long; banner broadly obovate, abruptly arcuate; wings shorter, the blade obliquely oblanceolate; keel-petals nearly as long as the banner, the blade very broad, strongly arcuate at the rounded apex; pod arcuate, silvery, acute at each end, 1.5-2 cm. long, about 3.5 mm. wide, and 2 mm. thick, white-strigose, deeply sulcate on the lower suture, narrowly cordate in cross-section.
Type locality: Mohave Desert. Distribution: Mohave and Colorado deserts.