Astragalus straturensis M. E. Jones

Tium atratiforme Rydberg
Hamosa atratiformis Rydb. Bull. Torrey Club 34: 48. 1907.
Astragalus stralurensis Tidestrom, Contr. U. S. Nat. Herb. 25: 326. 1925. Not A. slraturensis M. E. Jones. 1898.
A perennial, with a cespitose caudex; stems erect, 2-3 dm. high, slender, strigose; leaves 3-5 cm. long, ascending, the rachis strigose; stipules deltoid, strigose, 1-2 mm. long; leaflets 13-19, oblong, strigose beneath, glabrous above, 4—6 mm. long, obtuse to slightly retuse at the apex; peduncles 5-7 cm. long; racemes lax, 2-3 cm. long; bracts lanceolate, 1-1.5 mm. long; pedicels 1 mm. long; calyx black-strigose, the tube about 2 mm. long, the teeth subulate, 1 mm. long; corolla ochroleucous or white, with purple-tipped keel; banner about 7 mm. long, obovate, strongly arched at the middle, retuse at the apex; wings a little shorter, the blade oblanceolate; keel-petals much shorter, the blade broadly lunate, strongly curved above the middle, obtuse at the apex; pod subsessile, straight, minutely strigulose, about 1.5 cm. long.
Type locality: Southern Utah.
Distribution: Southwestern Utah and northwestern Arizona.

Atelophragma straturense (M. E. Jones) Rydb. Bull. Torrey Club 55: 162. 1928.
Astragalus stralurensis M. E. Jones, Contr. W. Bot. 8: 19. 1898.
A perennial, with a woody root; stem branched, 4-9 dm. high, striate, sparingly strigose, straw-colored, flexuosc; leaves ascending, 7-10 cm. long, the rachis strigose; stipules deltoid or lanceolate, acuminate, 3 mm. long, reflexed, green; leaflets 13-19, oblong or oblanceolate, 1-2 cm. long, 2-6 mm. wide, cuneate at the base, obtuse, truncate, or retuse at the apex, glabrous above, strigose beneath; peduncles slender, 6-10 cm. long; racemes lax, 5-10 cm. long; bracts lanceolate, 1-2 mm. long; pedicels 1 mm. long; calyx black-hairy, the tube acute at the base, 2.5 mm. long, the teeth lance-subulate, 1 mm. long; corolla purplish, about S mm. long; banner obovate, rather strongly arcuate at the middle; wings slightly shorter, the blade oblanceolate, falcate; keel-petals much shorter, the blade broadly obliquely obovate, rounded at the apex; pod strigose, the stipe 2 mm. long, the body oblanceolate in outline, somewhat falcate, 15-20 mm. long, 3 mm. wide, sulcate on the lower suture; septum about 1 mm. wide.
Type locality: Silver Reef, Utah. Distribution: Known only from the type locality.