Astragalus purshii var. glareosus (Dougl.) Barneby

Xylophacos glareosus (Dougl.) Rydb. Fl. Rocky Mts
506, 1063. 1917.
Astragalus glareosus Dougl.; Hook. Fl. Bor. Am. 1: 152. 1831. Tragacantha glareosa Kuntze, Rev. Gen. 945. 1891. Astragalus allanaris Sheldon, Minn. Bot. Stud. 1: 141. 1894. Astragalus inflexus glareosus M. E. Jones, Contr. W. Bot. 10: 62. 1902. Phaca glareosa Piper. Contr. U. S. Nat. Herb. 11: 369. 1906. Astragalus booneanus A. Nelson, Bot. Gaz. S3: 223. 1912.
A cespitose perennial, with a much branched caudex; stems 2-5 cm. long, decumbent; leaves 4—7 cm. long, ascending; stipules lance-subulate, 4-5 mm. long, villous; leaflets 13-19, oblanceolate or narrowly lance-elliptic, acute at each end, 5-15 mm. long, villous-canescent; peduncles 2-5 cm. long; racemes 5-10-flowered; bracts lanceolate, about 5 mm. long; calyx strigose, more or less black-hairy, the tube about 1 cm. long, 3-3.5 mm. wide, the teeth subulate, 2-3 mm. long; corolla purple, about 2 cm. long; banner obovate, retuse, moderately arched; wings 2 mm. shorter, acutish, the blades oblong, with a rounded auricle; keel-petals still shorter, the blade broadly lunate, rounded at the apex; pod densely villous, strongly arcuate above the middle, rather long-acuminate, about 2.5 cm. long, 1 cm. thick, and 7 mm. wide.
Type locality: "Confluence of the Lewis and Clark's River with the Columbia" [Washington]. Distribution: British Columbia to southwestern Montana, western Wyoming and Oregon.

Xylophacos ventosus (Suksd.) Rydb. Bull. Torrey Club 52:370. 1925.
Astragalus ventosus Suksd.; Rydb. Bull. Torrey Club 52: 370, as a synonym. 1925.
A perennial, with a tufted cespitose caudex; stems many, less than 5 cm. long, whitevillous, densely leafy; leaves spreading, 2-5 cm. long; stipules lanceolate, acuminate, 5-6 mm. long; leaflets elliptic, obtuse, 5-7 mm. long, 2-3 mm. wide, white-villous on both sides; peduncles 1-2 cm. long; racemes 3-6-flowered, subcapitate; bracts lance-subulate, 5 mm. long; calyx blackvillous, often purpletinged, the tube 10-11 mm. long, 2-3 mm. broad, the teeth subulate, 2 mm. long; corolla purplish, about 2 cm. long; banner obovate; wings slightly shorter, the blades oblong, with a large basal auricle; keel-petals slightly shorter, the blade strongly lunate, rounded at the apex; pod ovate, lunate, fully 1.6 cm. long, 8 mm. wide and thick, densely woolly.
Type locality: Windy rocky place several kilos east of Bingen, Washington. Distribution: Washington.