Astragalus aegobromus subsp. aegobromus

Cnemidophacos argillosus (M. E. Jones) Rydb. Bull. Torrey Club 40:52. 1913.
Astragalus argillosus M. E. Jones, Zoe 2: 241. 1891.
A perennial, with a cespitose caudex; stems many, decumbent at the base, silky -canescent; leaves 7-10 cm. long, ascending, the rachis silky; stipules lanceolate, acuminate, 3 mm. long, or the lower deltoid and connate; leaflets 9-13, linear, acute, 2.5-3 cm. long, 2-5 mm. wide, silvery on both sides; peduncles about 1 dm. long, erect; racemes 3-5 cm. long; bracts subulate, 5 mm. long; pedicels very short; calyx pilose with long loose hairs, the tube 3 mm. long, the teeth narrowly subulate, fully as long; corolla purplish or white, veined with purple, 9-10 mm. long; banner narrowly obovate, rather strongly arched; wings shorter, the blade obliquely oblanceolate, with a reflexed auricle; keel-petals shorter, the blade broadly lunate; pod ovate, long-strigose, 7 mm. long, oblong in cross-section.
Type locality: Green River, Utah. Distribution: Type locality and vicinity.