Hillside Milkvetch

Homalobus collinus (Dougl.) Rydb. Bull. Torrey Club
40: 53. 1913.
Phaca collina Hook. Fl. Bor. Am. 1: 141. 1831.
Astragalus collinus Dougl.; Hook. Fl. Bor. Am. 1: 141, as synonym. 1831. Astragalus syrtoides A. Gray, Proc. Am. Acad. 6: 201. 1864. Tragacantha collina Kuntze, Rev. Gen. 944. 1891.
A perennial, with a cespitose caudex; stems branched, 3-5 dm. high, shortvillous with incurved hairs; leaves 5-10 cm. long; stipules lanceolate, distinct, 3-5 mm. long, short-villous ; leaflets 1 1-23, linear or oblong, or those of the lower leaves obovate, acute at the base, obtuse to retuse at the apex, 5-15 mm. long, 2-5 cm. wide, short-pubescent on both sides with curved hairs; peduncles 5-12 cm. long; racemes 5-10 cm. long; bracts lanceolate, 3-4 mm. long; pedicels very short, shorter than the bracts; calyx villous, the tube 7 mm. long, 4—5 mm. broad, gibbous below on the upper side, the upper two teeth triangular, the lower three lanceolate, 2 mm. long; corolla pale-yellow; banner obovate, 12-14 mm. long, tapt_ring into the broad claw; wings about as long, the blade oblong, acutish, with a semisagittatc base, shorter than the long claw; keel-petals slightly shorter, the broadly lunate blade rounded at the apex, with a rounded basal auricle, a little more than half as long as the claw; pod shortvillous, stipitate, the body linear, nearly straight or slightly curved upwards, 2-2.5 cm. long, 4 mm. broad, acute at each end, the stipe about 8 mm. long; seeds obliquely reniform, fully 2 mm. long, 1.5 mm. broad.
Type locality: On the subalpine range of the Blue Mountains, Oregon. Distribution: British Columbia to Idaho and Oregon.