An ascending or erect shrublet 0.3-0.6 m tall, amply branched. Young branches rather slender, densely short-villous (to white-velutinous). Leaflets linear (or 'sausage-shaped'), 1-2.5 mm long, ±0.5 mm thick, terete, acute, straight or slightly incurved, clear green, glabrous. Bract subulate, 0.6-0.9 x 0.25 mm, with some minute pubescence. Pedicel 0.5-0.7 mm long, short-villous. Bracteoles tooth-like, 0.4-0.6 mm long. Calyx tube campanulate, short-and white-villous, partly purplish; lobes deltoid-triangular, 0.8-1.1 mm long, green or partly purplish, acute, subglabrous. Petals light yellow or pubescent, partly red-purple along middle of standard back. Standard blade broadly elliptic or obovate, 5-5.8 x 3.9-4.3 mm, obtuse, densely short-tomentose (-sericeous) on most of the back, glabrous on the front. Wing blades oblong, 4-5 x 1.3-1.7 mm, rounded apically, glabrous except for some pubescence on lower middle parts. Keel blades upcurved, 4.4-4.7 x 1.8-2 mm, short-hairy on lower half, with concave or S-curved upper margin. Pistil hairy on upper parts of ovary and style base; ovules 2. Pod broadly triangular-lanceolate, 7.5-8.5 x 3.3-3.7 mm, sericeous or partly tomentose on most parts.
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Erect shrublet 30-60 cm. Leaves 3-foliolate, leaflets sausage-shaped, straight or slightly incurved, glabrous. Flowers solitary at branchlet tips, pale yellow, partly reddish purple, wings partly hairy, keel with S-curved upper margin, shortly hairy, calyx shortly white-hairy, lobes triangular, subglabrous.