Astragalus iodanthus S. Wats.

Xylophacos iodanthus (S. Wats.) Rydb. Bull. Torrey Club 52: 144. 1925.
Astragalus iodanthus S. Wats. Bot. King's Expl. 70. 1871. Tragacanlha iodantha Kuntze, Rev. Gen. 945. 1891.
A perennial, with a cespitose woody caudex; stems decumbent, flexuose, 2-6 dm. long, glabrate or sparingly strigose; stipules triangular, 2-4 mm. long, hyaline, reflexed; leaves spreading, 4-10 cm. long; leaflets 17-21, obovate or oval, 8-12 mm. long, 4—6 mm. wide, glabrous or ciliolate on the margins and ribs, obtuse, rounded, or retuse at the apex; peduncles 3-5 cm. long; racemes short and rather dense; bracts lanceolate, 3 mm. long, longer than the pedicels; calyx sparingly strigose with black hairs, the tube about 5 mm. long, the teeth subulate, 2 mm. long; corolla light-purple or white, 12-15 mm. long; banner oblong, abruptly bent at the middle, deeply notched at the apex; wings shorter, the blades obliquely oblaneeolate, with a rounded basal auricle; keel-petals much shorter, broader, strongly arcuate, and rounded at the apex; pod lanceolate in outline, strongly arcuate, about 3 cm. long and 8 mm. wide, mottled, sparingly strigose, finely cross-reticulate, acute at each end, usually depressed, and somewhat sulcate on the sutures.
Type locality: Virginia City. Nevada. Distribution: Nevada and eastern California.