An erect, rather closely branched shrub 0.3-0.7 m tall, up to ±10 mm thick at the base. Young branches light yellowish, slender, puberulous or partly glabrous; floriferous branchlets ascending, subfiliform, with one (or two) up to 30 mm long, peduncle-like internodes). Leaflets therefore in fascicles, 3-9(-15) together, linear, 2-5 mm long, subterete, weak, straight or slightly incurved, acute-subobtuse, glabrous. Inflorescences unifloral, on the tips of peduncle-like branchlets (see above), subtended by 1 or 2 vegetative leaves (and their axillary short-shoots). Bract linear-subulate, 2-3(-3.5) x 0.4-0.7 mm, acute, green, glabrous (on abaxial side). Pedicel 0.4-0.8 mm long, white-puberulous. Bracteoles similar to the bract, 2.7-3.5 x 0.5-0.8 mm. Calyx tube campanulate, pale, short-and white-tomentose; lobes linear-lanceolate or broadly subulate, 2.5-4(-4.5) mm long, carnose, acuminate, green and glabrous. Petals light yellow, without violet or purple shades, subglabrous or glabrous. Standard blade ovate, 6.5-8.5 x (4.3-)5-6.5 mm, glabrous (except at the base of the front), margins below middle incurved, apex ± green, thick, carnose and acute. Wing blades oblong, (5-)6-8.2 x 2.5-3.2(-4) mm, glabrous, with ±5 rows of small folds on upper basal parts. Keel petals lunate, (4.5-)5.2-6.5(-7) x 2.7-3.6 mm, with slightly concave or S-curved upper margin. Pistil tomentose on upper parts of ovary and style base; ovules 2; stigma regular, capitate. Pod lanceolate, 11-14.5 x 4.5-5.5 mm, hard, sparsely tomentose(-sericeous), brown when ripe.
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Erect, closely branched shrublet, 30-70 cm. Leaves 3-foliolate, leaflets fasciculate, subterete, weak, straight or slightly incurved, glabrous. Flowers single on slender, peduncle-like branches, pale yellow, wings and keel glabrous, calyx shortly white-hairy, lobes awl-shaped, glabrous.