Robbins' Milkvetch

Atelophragma collieri Rydb. Bull. Torrey Club 55: 127. 1928.
A perennial; stems 3-6 dm. high, somewhat angled, glabrous or nearly so, branched; leaves nearly sessile, about 1 dm. long, the rachis glabrous; stipules lanceolate, 5 mm. long, green; leaflets 1 1-15, elliptic, 1.5-3 cm. long, 5-10 mm. wide, glabrous and dark-green above, paler and sparingly pilose beneath, rounded or retuse at the apex; peduncles 10-15 cm. long, angled; racemes 5-15 cm. long, the rachis sparingly black-hairy; bracts subulate, 3 mm. long; pedicels about 3 mm. long; calyx black-hairy, the tube 3 mm. long, oblique above, the teeth subulate, 1.5 mm. long; corolla apparently white, 12 mm. long or more; banner obovate, retuse at the apex, strongly arcuate; wings slightly shorter, the blade oblanceolate; keel-petals shorter, the blade broadly lunate, rounded at the apex; pod membranous, black-hairy, the stipe 5 mm. long or more, the body fully 2 cm. long, 6-7 mm. wide, acute at each end, the cross-section elliptic, the partial septum fully 1 mm. wide.
Type locality: Eagle. Alaska.
Distribution: Alaska.

Atelophragma macounii Rydb. Bull. Torrey Club 32:660. 1906.
Astragalus Robbinsii occidenlalis S. Wats. Bot. King's Expl. 70, in part. 1871; Brand. Bull. U. S. Geol.
Surv. Terr. 2: 235. 1876. Astragalus Macounii Rydb. Mem. N. Y. Bot. Card. 1: 243. 1900. Astragalus labradoricus occidenlalis M. E. Jones, Rev. Astrag. 134, in part. 1923.
A perennial, with a cespitose rootstock; stems 3-6 cm. high, erect, striate and strigose; leaves 5-10 cm. long, the rachis strigose; stipules ovate-lanceolate, free; leaflets 9-17, oblong, oval, or elliptic, obtuse or rounded, 1.5-2.5 cm. long, 4—10 mm. wide, thin, glabrous above, paler and strigose beneath; peduncles 7-15 cm. long; racemes 2-5 cm., in age 4—15 cm. long; bracts lineaY, 2-3 mm. long; pedicels 3-4 mm. long; calyx black-hairy, the tube 4 mm. long, the teeth subulate, about 1 mm. long; corolla bluish-purple, about 1 cm. long; banner obovate, rather abruptly arched at the middle; wings shorter, the blade elliptic, slightly falcate, with a large basal auricle; keel-petals much shorter, the blade obliquely obovate, with a large auricle; pod black-hairy, the stipe 3 mm. long, the body gradually acute at each end, nearly equally convex on both sutures, 16-18 mm. long, about 5 mm. wide and 3 mm. thick, the septum 0-7 mm. wide; seeds 4-6, round-reniform, dark-brown.
Type locality: Deer Park, Lower Arrow Lake. British Columbia. Distribution: Alberta to Colorado, Idaho, British Columbia, and Alaska (?).

Atelophragma blakei (Eggleston) Rydb. Bull. Torrey Club 55: 125. 1928.
Astragalus Blakei Eggleston, Bot. Gaz. 20: 271. 1895.
Astragalus Robbinsii borealis Eggleston, Bot. Gaz. 20: 271, as a synonym. 1895. Astragalus labradoricus M. E. Jones, Rev. Astrag. 133, in part. 1923. Not .4. labradoricus DC. 1825.
A perennial, with a cespitose rootstock; stem 3-5 dm. high, erect, or decumbent at the base, sparingly strigose, angled and sulcate; leaves 3-10 cm. long, ascending; stipules ovate, 4-6 mm. long, acute, the upper reflexed; leaflets 11-17, oblong or elliptic, obtuse, rounded, or emarginate at the apex, glabrous above, paler and strigose beneath; peduncles 8-15 cm. long, black-hairy; racemes 5-15-flowered, 2-3 cm. long, in age 3-6 cm. long; bracts linear or subulate; pedicels 2-4 mm. long; calyx black-hairy, the tube 3 mm. long, 2 mm. broad, the teeth subulate, 1-1.5 mm. long, the upper slightly shorter; corolla light-violet, nearly 10 mm. long; banner obovate, rather abruptly arched at the middle; wings shorter, the blade oblong, falcate, with a large basal auricle; keel-petals still shorter, the blade obliquely obovate with a large auricle; pod densely black-hairy, the stipe about 4 mm. long, the body 15-20 mm. long, 5 mm. wide, 2.5 mm. thick, tapering at each end, the lower suture less curved than the upper, the septum 0.3 wide; mm. seeds 4-8, obliquely round-reniform, 2 mTi. long, nearly black.
Type locality: Willoughby Mountain. Vermont.
Distribution: Labrador, Maine, and Vermont.