A prostrate, ± mat-like shrublet with branches up to longer than 0.4 m, densely branched, densely leafy, and, on the young parts, reddish and densely short-tomentose. Leaflets 3-many together, linear, 1.5-4(-5) mm long, ±0.5 mm thick, terete or slightly depressed, often slightly incurved, acuminate or mucronulate (not rigid or prickly), glabrous. Inflorescences usually unifloral, on the tips of quite short, densely leafy, lateral branchlets. Bract linear, 2-3.5(-3.7) x 0.4-0.6 mm, green, tapering, acuminate, almost trigonous, glabrous on abaxial side, ± tomentose adaxially on basal half. Pedicel very short. Bracteoles 2-4 x 0.4-0.5 mm. Calyx tube ±2.5 mm long, externally glabrous, with 5 prominent ridges continuing into the midveins of the lobes; lobes linear-subulate, (3.7-)4-6 mm long, acute to acuminate, carnose, glabrous. Petals intensely lemon-yellow, with very short claws. Standard blade elliptic-ovate, 9-11 x 7.5-8.5 mm, obtuse (-acute) but without distinct apical tip, the sides flat or somewhat recurved (not incurved as in nearly all similar species), back with few, scattered appressed hairs along the midrib and puberulous on the base. Wing blades oblong, 6.5-7.5 x 2-2.6 mm, broadest on apical half, glabrous, with ±5 rows, with several minute folds each, on basal upper parts. Keel blades upcurved at almost right angles, 6-6.7 x 2.5-3 mm, glabrous, obtuse-rounded, with upper margin concave near the middle. Pistil hairy on upper side of ovary and style base; ovules 2. Pod narrowly triangular-ovate, 6.5-7 x 3.2-3.5 mm, compressed, smooth, subglabrous, dark.
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Like A. juniperina but standard not pointed at tip, and laterally recurved (not incurved) along sides.