A decumbent low shrublet with 0.25-0.45 m long, slender branches. Young branches very slender, with sometimes up to 40 mm long internodes, covered with variably dense, tomentose pubescence. Leaves on young long-shoots without axillary short-shoots, alternate or near branch tips almost opposite. Leaflets linear, broadest on distal half, 6-11 x 0.4-1 mm, partly flat or canaliculate (keeled), basally subfiliform, apically subulate-acuminate, puberulous on basal third, otherwise with sparse, rather long, spreading hairs. Inflorescence in terminal capitula of 1-5 flowers; these small, situated close together and surrounded by the uppermost two leaves. Bract filiform, 0.5-1.5 mm long, very narrow, with scattered spreading hairs. Pedicel slender, 3.5-4 mm long but only ±0.2-0.3 mm thick, reddish, densely puberulous. Bracteoles minute, visible as a minute wart with a few hairs near the middle of the pedicel. Calyx tube infundibular, ±1.2 mm long; short tomentose; lobes subfiliform, 3-3.5 mm long and less than 0.2 mm broad, weak, sparsely hairy. Petals pale to bright yellow (turning red). Standard blade elliptic, ±4.5-5 x 2.9-3.4 mm, acute, short-sericeous on the back. Wing blades very narrowly elliptic or linear, ±4.3 x ±1.3 mm, glabrous. Keel blades ±3.5-1.7 mm, upper side slightly concave at middle, most parts short-sericeous. Pistil pubescent on the upper half of ovary and upper side of the basal half of the style; ovules 2. Pods not seen.
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Sprawling shrublet with slender, peduncle-like branches 25-45 cm. Leaves 3-foliolate, leaflets linear-spathulate, keeled, basally thread-like, long spreading-hairy. Flowers small, 1-5 at branch tips, pale to bright yellow, fading red, wings glabrous, keel shortly hairy, calyx shortly hairy, lobes thread-like, awl-like, weak.