Astragalus striatus

Astragalus striatus Nutt.; T. & G. Fl. N. Am. 1: 330. 1538
Astragalus Laxmanni Nutt. Gen. 2: 99. 1818. Not A. Laxmanni Jacq. 1776.
Astragalus adsurgens Hook. Fl. Bor. Am. 1: 149. 1831. Not A. adsurgens Pall. 1800.
Astragalus adsurgens robustior Hook. Fl. Bor. Am. 1: 149. 1831.
Astragalus hypogloitis robuslus Hook. Lond. Jour. Bot. 6: 210. 1847.
Astragalus nitidus Dougl; (Hook. Fl. Bor. Am. 1: 149, as synonym. 1831) M. E. Jones, Proc. Calif.
Acad. II. 5: 646. 1895. Phaca adsurgens Piper, Contr. U. S. Nat. Herb. II: 372. 1906. Astragalus adsurgens pauperculus Blankinship, Mont. Agr. Coll. Stud. 1:72 [depauperate form].
1895. Astragalus nitidus robustior M. E. Jones, Rev. Astrag. 170, in part. 1923.
A perennial, with a cespitose caudex; stems several, decumbent at the base, 2-4 dm. high, sparingly strigose; leaves 7-12 cm. long, ascending; stipules deltoid, distinct, scarious, about 5 mm. long; leaflets 13-25, oblong or elliptic, 5-20 cm. long, 4-7 mm. wide, acute or obtuse, silky-strigose beneath, less so or glabrate above; peduncles 6-10 cm. long; racemes dense, 3-6 cm. long; bracts lanceolate, 3-5 mm. long; calyx strigose with short black and white hairs mixed, the tube 4-6 mm. long, the teeth 3-4 mm. long, subulate; corolla light-purple, sometimes white, 15-18 mm. long; banner oblong-obovate, moderately arched; wings shorter, the blade oblong-oblanceolate, with a large basal auricle; keel-petals much shorter, the blade broadly lunate, rounded at the apex; pod oblong, 7-10 mm. long, 3-4 mm.wide and as thick, strigose, nearly straight, deeply sulcate on the lower suture.
Type locality: Plains and hills of the Platte and Missouri.
Distribution: Manitoba and Minnesota to Nebraska, New Mexico, and Washington.