Astragalus nuttallii (Torr. & A. Gray) Howell

Phaca unde Rydberg, sp. nov
Peiennial, with underground woody stems; blanches decumbent or ascending, about 2 dm. high; leaves numerous, more or less arcuate, 3-6 cm. long, the rachis villous; stipules scarious, 5-6 mm. long, lance-deltoid; leaflets 13-31, crowded, obovate, usually retuse at the apex, 5-12 mm. long, white-villous with curved short hairs; peduncles 3-6 dm. long; racemes 3-5 cm. long; bracts subulate, 2-3 mm. long, about equaling the pedicels; flowers drooping; calyx whitevillous, the tube eampanulate, 3-3.5 mm. long, the teeth deltoid, 1 mm. long; corolla ochroleucous, 10-12 mm. long; banner obovate, arched above the middle; wings nearly as long, the blade slightly falcate, oblong, with a large auricle; keel-petals as long, similar but broader, rounded at the apex; pod obliquely ovoid, about 3 cm. long and 1.5 cm. wide, more ventricose on the lower suture, sparingly villous, at least when young.
Type collected at " Walla Walla, Washington " [but more likely southern California], C. L. Shear 5625 (U. S. Nat. Herb. No. S35452).
Distribution: Southern California and [?| Washington.