Astragalus hidalgensis (Rydb.) Barneby

Hamosa hidalgensis Rydb. Bull. Torrey Club 54: 333. 1927
A perennial; stem 4-6 dm. high, striate, glabrous or minutely strigulose; leaves 6-10 cm' long, spreading; stipules deltoid, 3-4 mm. long, distinct; leaflets 21-29, oblong, 10-20 mm long, 2-4 mm. wide, glabrous above, strigulose beneath, truncate, rounded, or retuse at the apex; racemes 10-15 cm. long; rachis black-hairy; bracts lanceolate, 2 mm. long; flowers reflexed; calyx black-hairy, the tube 2 mm. long, the teeth lanceolate, 1 mm. long; corolla white, about 6 mm. long; banner obovate, strongly arcuate, retuse at the apex; wings somewhat shorter, the blade broadly elliptic ; wing-petals still shorter, the blade broadly lunate, rounded at the apex; pod linear-oblong, arcuate, about 12 mm. long, 4 mm. wide, and 2.5 mm. thick, acute at each end, minutely strigulose, broadly cordate in cross-section.
Type locality: Dublan, Hidalgo. Distribution: Hidalgo and Zacatecas.

Atelophragma hidalgense Rydb. Bull. Torrey Club 55: 159. 1928.
A perennial; stem 3-5 dm. high, terete, minutely strigose, branched; leaves 5-7 cm. long; stipules broadly deltoid, 3-4 mm. long, leaflets 19-27, oblong or elliptic, 3-8 mm. long, 1-4 ram. wide, rounded or slightly retuse, minutely strigose beneath, glabrous above; peduncles 3-6 cm. long; racemes short, 61 0-flowered ; bracts subulate, 1-2 mm. long; calyx sparingly strigose, the tube 2 mm. long, the teeth linear, scarcely 1 mm. long; corolla 7-8 mm. long, purple-tinged; banner obovate, moderately arched; wings nearly as long, the blade oblong; keel-petals shorter, broadly lunate; pod glabrous, the stipe 1 mm. long, the body elliptic, 12-14 mm. long, about 6 mm. wide, abruptly acute at each end, deeply sulcate on the lower suture, the septum more than 1 mm. wide; seeds about 10.
Type locality: Sierra de la Mesa. Hidalgo. Distribution: Hidalgo, Mexico, and Morelos.