Elegant Milk Vetch

Atelophragma elegans (Hook.) Rydb. Bull. Torrey Club 32: 660. 1906.
Phaca elegans Hook. Fl. Bor. Am. 1: 144. 1831.
Phaca elegans minor Hook. PI. Bor. Am. 1: 144. 1831.
Phaca parvijlora Nutt.; T. & G. Fl. N. Am. 1: 348. 1838.
Astragalus oroboides A. Gray, Am. Jour. Sci. II. 33: 410. 1862. Not .4. oroboides Hornem. 1810.
Astragalus oroboides americanus A. Gray. Proc. Am. Acad. 6: 205. 1864.
Astragalus elegans Sheldon, Minn. Bot. Stud. 9: 154. 1894. Not .4. elegans Bunge, 1868-9.
Astragalus elegans curliflorus Rydb. Mem. N. Y. Bot. Gard. 1: 242. 1900. Astragalus minor M. E. Jones, Contr. W. Bot. 10: 64. 1902.
Astragalus curtijlorus "Rydberg" (erroneously); M. E. Jones, Contr. W. Bot. 10: 64. 1902.
Astragalus eucosmits B. L. Robinson, Rhodora 10: 33. 1908.
A perennial, with a cespitose rootstoek or caudex; stems 3-6 dm. high, striate, glabrous or sparingly hairy; leaves 5-10 cm. long, ascending; stipules green, spreading, sparingly pubescent, 3-5 mm. long; leaflets 13-15, oblong or elliptic, 1-2.5 cm. long, 3-7 mm. wide, obtuse or rounded at the apex, glabrous above, strigose and often paler beneath; peduncles 7-15 cm. long; racemes 4-10 cm. long, in fruit even 15 cm. long and often secund; bracts subulate, 2-3 mm. long; pedicels 2-3 mm. long; calyx strigose with black, or with mixed white and black hairs, the tube oblique, 2.5-3 mm. long, 2 mm. broad, the teeth lance-subulate, 1 mm. long; corolla usually dark-purple; banner 8 mm. long, obovate, emarginate, moderately arched at the middle; wings shorter, the blade elliptic-oblong, slightly falcate, with a long reflexed auricle; keelpetals still shorter, the blade obliquely obovate, with a smaller auricle; pod subsessile, reflexed, obliquely elliptic, less curved on the lower suture, black-hairy or rarely white-hairy, 10-12 mm. long, 4-5 mm. wide, the cross-section elliptic; seeds olive-brown, obliquely round-reniform, 2 mm. long.
Type locality: Prairies of the Rocky Mountains, Canada.
Distribution: Labrador to Maine. British Columbia, and Alaska, and in the Rockies south to Colorado.

Atelophragma atratum Rydberg, sp. nov
A cespitose perennial; stems about 2 dm. high, striate, glabrous; leaves 3-4 cm. long, ascending; stipules deltoid, 5 mm. long; leaflets 9-13, oval or obovate, 1-1.5 cm. long, 4-8 mm. wide, glabrous above, sparingly villous beneath; peduncles 10-12 cm. long; racemes short and dense, 2-3 cm. long; bracts subulate, 5 mm. long, black-hairy; calyx densely black -hairy, the tube campanulate, 3 mm. long, the teeth obtuse, 1 mm. long, the lowest one a little longer; corolla dark-purple, about 8 mm. long; banner obovate, moderately arched; wings slightly shorter, the blade obliquely oblanceolate, with a large basal auricle; keel-petals broadly lunate, rounded at the apex; pod subsessile, 6-7 mm. long, rounded-ellipsoid, abruptly acute, densely villous with short black hairs, 4-5-seeded, the septum about 0.5 mm. wide, the cross-section nearly round; seeds brown, obliquely reniform, 2 mm. long.
Type collected August 22, 1896, on Herchel Island, Yukon, Alvin Seale (herb. Stanford
ty): Distribution: Yukon and Alaska.