Astragalus strigulosus Kunth

Atelophragma strigulosum (H.B.K.) Rydb. Bull. Torrey Club 55: 158. 1928.
Astragalus slrigulosus H.B.K. Nov. Gen. & Sp. 6: 494. 1824. Tragacantha strigulosa Kuntze, Rev. Gen. 948. 1891.
A perennial; stem ascending or erect, sulcate or striate, 3-6 dm. high, more or less strigose or pilose; leaves 5-8 cm. long, the rachis strigose; stipules lanceolate, 4—5 mm. long, the lower connate; leaflets 17-25, oblong to oval, 8-20 mm. long, rounded, truncate, or retuse at the apex; peduncles 6-10 cm. long; racemes 3-8 cm. long; bracts lance-subulate, 3 mm. long, blackhairy; pedicels 1 mm. long; calyx black-hairy, the tube 3 mm. long, 2 mm. broad, the teeth subulate, 3.5 mm. long; corolla cream-colored, about 8 mm. long; banner obovate, moderately arched; wings nearly as long, the blade oblanceolate-falcate, with a refiexed auricle; keel-petals 6-7 mm. long, the blade broadly lunate, rounded at the apex; pod glabrous, papery, the stipe 4 mm. long, the body ellipsoid, acutish at each end, about 15 mm. long, 6 mm. wide, the septum less than 1 mm. wide; seeds 12-16, nearly 3 mm. long, dark-brown.
Type locality: Moran, Mexico.
Distribution: San Luis Potosi to Oaxaca.