Astragalus lyallii A. Gray

Astragalus lyallii A. Gray, Proc. Am. Acad. 6: 195. 1864
Tragacanlha Lyallii Kuntze, Rev. Gen. 246. 1891.
Phaca Lyallii Piper, Contr. U. S. Nat. Herb. 11: 370. 1906.
Astragalus Lyallii caricinus M. E. Jones, Rev. Astrag. 174. 1923.
A perennial, with a cespitose woody caudex; stems numerous, 2-5 dm. high, villous, terete, flexuose; leaves ascending, 5-10 cm. long; stipules subulate, 3-5 mm. long; leaflets 13-17, villous, oblong to linear-lanceolate, acute at each end, 1-1.5 cm. long, 2-4 mm. wide; peduncles 4-6 cm. long; racemes elongate, 4-10 cm. long, lax; bracts subulate, 3-4 mm. long; flowers reflexed; pedicels 1 mm. long; calyx villous, the tube 2 mm. long, the teeth subulate, 3 mm. long; corolla white, 6-7 mm. long; banner obovate, striate, strongly arched at the middle; wings shorter, the blade obliquely oblanceolate, falcate, with a prominent auricle; keel-petals shorter, the blade broadly lunate, strongly arched, obtuse; pod villous, lance-oblong, somewhat laterally compressed, 6-7 mm. long, 3 mm. wide and thick, cordate in cross-section; seeds few.
Type locality: Upper Yakima River. Washington.
Distribution: Washington and Idaho.