A small, decumbent to ascending shrub-let up to ±35 cm high, with slender, terete to somewhat angular branches appressedly puberulous on the young parts. Hairs with minute warts (seen only under the microscope). Short-shoots not observed in the material to hand. Leaves supported by a prominent, tubercular base; petiole somewhat flattened, puberulous, from less than 0.5 to more than 1.5 mm long; leaflets linear-spathulate, 5-9(-11) x 0.8-1.3(-1.6) mm in size, with narrow, petiolule-like puberulous base and with retuse, truncate or acute ape x usually with a small, somewhat recurved apicule; laminae smooth, subglabrous or glabrous, their basal half often canaliculate to compressed, the apical half somewhat canaliculate to flat. Racemes usually 2-4 cm long, generally with only 2-6 sparsely set flowers. Bract and bracteoles (the latter on the pedicel 1-2 mm from its base) caducous, subulate-linear, 1.0-1.3 and 0.5-0.7 mm long respectively, more or less puberulous. Pedicel usually 1.3-2.5 mm long, short-sericeous. Calyx tube campanulate, somewhat shorter on the upper than on the lower side, ±2.0 mm long, glabrous or with a few short hairs; lobes deltoid-triangular, ±0.4-0.5 mm long except the lowest which is narrowly triangular and 0.6-0.8 mm long, lobes with a few hairs near the margins. Petals yellow or pale brown to pink, glabrous.-Standard blade shorter than the carina, triangular-ovate, 5.0-5.5 x 3.0-4.0 mm, acute, very slightly incurved near the ape x; claw 2.0-2.2 mm long. Wing blades 4.0-4.5 x 1.5-2.0 mm, often slightly twisted in the flowering stage; claws ±2 mm long. Keel blades obtuse, of shape seen in 5.2-5.5 x 2.3-2.8 mm, with the lower margin relatively strongly upcurved and with distinct lateral spurlets; claws 2.0-2.5 mm long. Pistil glabrous, (2-)4-5-ovuIate, with a stipe 2.5-3 mm long. Fruit (of Esterhuysen 22042) with a stipe up to 2 mm long or more, ovoid, inflated, e x cl. stipe and style ±4 x 2 mm, more than 2 mm thick, glabrous, wingless but with a broad obtuse placental margin. Fruit walls thinner than in W. obcordata. Mature seed usually solitary.
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Erect or decumbent shrublet to 50 cm. Leaves 3-foliolate, petiole tuberculate. Flowers yellow, calyx short, standard petal reflexed. Pods elliptic to obovate, distinctly stipitate, inflated, indehiscent.