Astragalus whitneyi var. sonneanus (Greene) Jeps.

Hamosa hookeriana (D. Dietr.) Rydberg
Astragalus ervoides H. & A. Bot. Beech. Voy. 417. 1841. Not A. ervoides Turcz. 1838. Astragalus Hookerianus D. Dietr. Syn. PI. 4: 1086. 1850. Tragacantha ervoides Kuntze. Rev. Gen. 944. 1891. Astragalus aperlus Sheldon, Minn. Bot. Stud. 1: 166. 1894. Astragalus tepicus Sheldon, Minn. Bot. Stud. 1: 172. 1894.
A perennial; stem 3-5 dm. long, puberulent, slender, apparently decumbent below; leaves spreading, 4-6 cm. long; stipules lanceolate; leaflets 15-19, remote, linear-oblong, obtuse, 6-12 mm. long, 2-3 mm. wide; peduncles 4-8 cm. long, slender; racemes 10-12-flowered, about 4 cm. long; bracts subulate, minute; calyx with scattered black hairs, the tube 2 mm. long, the teeth subulate, 1 mm. long or less, black-hairy; corolla ochroleucous; pod reflexed, lance-linear, slightly falcate, tapering at each end, glabrous, nearly 2 cm. long, 3 mm. wide.
Type locality: San Bias to Tepic. Distribution: Known only from the type locality.

Phaca hookeriana T. & G. Fl. N. Am. 1: 693. 1838
Astragalus Hookcrianus A. Gray, Proc. Am. Acad. 6: 215. 1864. Not A. Hooker ianus D. Dietr.
1850. Tragacantha Hookeriana Kuntze. Rev. Gen. 945. 1891. Astragalus Sonneanus Greene, Pittonia 3: 186. 1897.
Perennial, with a deep root and short cespitose rootstock; stems numerous, 1-2.5 dm. long, decumbent or ascending, more or less coarsely strigose; leaves ascending, 3-7 cm. long; stipules deltoid, 3-4 mm. long; leaflets 9-17, linear to obovate, acutish toretuse, 5-15 mm. long, 2-4 mm. wide, hirsute or hirsute-strigose; peduncles 2-4 cm. long; racemes short and dense, 5-12flowered; bracts subulate, 3 mm. long; calyx-tube campanulate, 4 mm. long, hirsute, the teeth 2 mm. long, subulate ; corolla ochroleucous, 12-13 mm. long ; banner obovate, gradually tapering below; wings shorter, the blade lunate, obtuse, with a small reflexed basal auricle, half longer than the claw; keel-petals similar and about as large as the wings; pod short-strigose, mottled, the stipe 4—5 mm. long, the body obovoid or ellipsoid, 2.5-5 cm. long, 1.5-2 cm. wide; seeds obliquely reniform, 3 mm. long, 2 mm. broad.
Type locality: Interior of Oregon.
Distribution: Idaho and eastern Washington to northeastern California and northern Nevada.