Astragalus radicans Hornem.

Atelophragma reptans (Wilid.) Rydb. Bull. Torrey Club
55: 159. 1928.
Astragalus reptans Willd. Hort. Berol. pi. 88. 1809. Tragacantha reptans Kuntze, Rev. Gen. 947. 1891.
A perennial; stems 6-12 dm. long, creeping, rooting at the nodes, strigose; leaves erect, 1-3 dm. long, the petiole and rachis strigose, sulcate; stipules connate, ovate, often 1 cm. long or more; leaflets 25-33, elliptic or oblong, 1-3.5 cm. long, acute at the base, rounded at the apex, glabrous above, strigose beneath; peduncles 1-2 dm. long; racemes 4—7 cm. long, dense; bracts lanceolate, 4-6 mm. long, scarious, pubescent; pedicels scarcely 1 mm. long; calyx black-hairy, the tube 4 mm. long, 3 mm. broad, the teeth 3 mm. long, lanceolate; corolla cream-colored, about 15 mm. long; banner narrowly obovate, moderately arched; wings nearly as long, the blade lance-oblong, longer than the claw, with a very large basal auricle; keel-petals 1 1 mm. long, the blade broadly obliquely obovate, rounded at the apex, with a small auricle; pod pubescent with short black hairs, the stipe less than 2 mm. long, the body ellipsoid, acute at each end, about 18 mm. long, 6 mm. wide, transversely oval in cross-section, the septum fully 1 mm. wide; seeds 14—16.
Type locality: Mexico.
Distribution: Mexico (state and federal district).