An erect shrub or shrublet (? size), copiously branched, with slender branches densely short-pubescent on the young parts. Leaflets linear, filiform, slender, 2.5-5 mm long and 0.3-0.4 mm thick, subterete, almost straight, weak, glabrous, rather pale yellow, acute. Inflorescences unifloral, on lateral short-shoots, dispersed along the branch ends in great numbers. Flowers small, narrow. Bract visible on the pedicel base 0.3-0.5 mm from its base, ±0.2 mm long, tooth-like, adaxially puberulous. Pedicel 1-1.5 mm long, white-puberulous. Bracteoles shorter than 0.5 mm. Calyx campanulate-urceolate, attached in lower basal part; lobes distinctly set off from the tube, small, distant, 0.5-0.7 mm long, triangular or tooth-like, green, acute. Petals light or pale yellow. Standard blade elliptic, 5-5.5 x ±3.1 mm, subacute, subglabrous but basally pubescent on each side of the base; claw very short (almost lacking). Wing blades linear, ±3.5 x 1.2 mm, glabrous, with 2 longitudinal rows of lamella-like folds on the upper parts (claws ±1.5 mm). Keel blades ±3.6 x 1.7 mm, obtuse, glabrous (claws ±1.5 mm). Pistil pubescent only on the upper part of the ovary base; ovules 2. Pod triangular-lanceolate, more than 9.5 x 3 mm, subglabrous (quite ripe pods not seen).
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Erect, single-stemmed, short-lived shrub to 1.5 m. Leaves 3-foliolate, leaflets subterete, weak, glabrous. Flowers scattered, white, back of standard with purple patch, standard and wings strongly reflexed, wings and keel glabrous, calyx glabrous, lobes very small, tooth-like.