Astragalus oophorus var. caulescens (M. E. Jones) M. E. Jones

Phaca artipes (A. Gray) Rydb. Bull. Torrey Club 32: 664 1906.
Astragalus)artipes A. Gray, Proc. Am. Acad. 13: 370. 1878.
Astragalus megacarpus cau'lescens M. E. Jones, Proc. Calif. Acad. II. 5: 643. 1895.
Perennial, with a cespitose caudex; stems many, branched, decumbent or ascending, glabrous, 1-3 dm. high; leaves ascending, 7-15 cm. long; stipules broadly deltoid, acuminate, about 5 mm. long; leaflets 13-21, obovate, retuse to rounded at the apex, 1-1.5 cm. long, 4—10 mm. wide, glabrous; peduncles 5-15 cm. long; racemes short, 51 0-flowered ; bracts lanceolate, 4—5 mm. long, deciduous; calyx-tube campanulate, glabrous, 4—5 mm. long, the lobes subulate, 3-4 mm. long; corolla ochroleucous, about 13 mm. long; banner obovate, gradually tapering below; wings somewhat shorter, the blade ovate-lunate, equaling the claw, with a large rounded basal auricle; keel-petals similar, but broader, shorter, and more rounded at the apex; pod glabrous, the stipe 5-8 mm. long, the body obliquely ovoid, with the tip somewhat curved upwards, 3-3.5 cm. long, about 2 cm. wide, mottled; seeds obliquely reniform, 3 mm. long, 2 mm. broad.
Type locality: Mokiah Pass, Arizona.
Distribution: Central Colorado to Idaho(?), Nevada, and Arizona.