Astragalus grayi Parry ex S. Wats.

Cnemidophacos grayi (Parry) Rydberg
Astragalus Grayi Parry; S. Wats. Am. Nat. 8: 212. 1874. Tragacantha Grayi Kuntze, Rev. Gen. 945. 1891. Ctenophyllum Grayi Rydb. Bull. Torrey Club 40: 50. 1913.
A perennial, with a woody root and short cespitose caudex; stems several, erect and strict, 3-4 dm. high, sulcate, sparingly strigose; leaves ascending, 5-8 cm. long, the rachis grooved above, sparingly strigose; stipules connate, deltoid, 6-S mm. long; leaflets 7-9, linear, 2-3 cm. long, 3-5 mm. wide, firm, veined, acute at the base, obtuse at the apex, sessile; peduncles 5-8 cm. long, strict; racemes dense, 4—5 cm. long; bracts lanceolate, 4—6 mm. long; pedicels about 2 mm. long; calyx black-hairy, the tube 8 mm. long, 4 mm. broad, the teeth lance-subulate, 3-4 mm. long; corolla ochroleucous, about 2.5 cm. long; banner ovate, only slightly arcuate; wings fully 2 cm. long, the blades oblong, scarcely falcate, with a reflexed auricle; keel-petals much shorter, about 16 mm. long, the blade obliquely obovate, with a reflexed auricle, the apex of the keel strongly incurved, obtuse; pod oblong-ovoid, rounded at the base, abruptly acuminate at the apex, cross-reticulate, 1 cm. long, 4-5 mm. thick and wide.
Type locality: Owl Creek Valley, Wyoming.
Distribution: Wyoming.