Herbaceous, to almost 1 m. in length; stem creeping or forming tussocks, terete, striate with stiff, upwardly appressed to spreading pilosity. Leaves 3-foliolate; stipules obliquely ovate-lanceolate with long attenuate apex and slightly auriculate base, 0.5–1 cm. long, 1.5–3 mm. wide, puberulent and pilose to glabrescent on the outer surface, persistent; petiole pilose, 1–3 cm. long; leaf-rhachis similar, 0.3–1 cm. long; leaflets elliptic-obovate, (acute to) obtuse and emarginate at apex, cuneate to rounded at base, pilose to essentially glabrous on the upper surface, densely soft pilose on the lower; terminal leaflet 1.7–4.3 cm. long, 0.7–3.2 cm. wide; lateral leaflets 1.3–3 cm. long, 0.7–2 cm. wide. Inflorescence composed of axillary and terminal racemes; rhachides striate to grooved, sparsely to abundantly stiff-pilose and finely puberulent with multicellular and uncinulate hairs; primary bracts ovate-acuminate with long attenuate apex, 3.5–5 mm. long, 1.5–2 mm. wide, pilose and puberulent to glabrescent, early deciduous, each subtending 2 pedicels; secondary bracts absent or, if rarely present, depauperate; pedicels with pubescence similar to that of rhachis, 0.4–1.7(–2.1) cm. long. Flowers usually pink. Calyx 2-lipped; tube minutely puberulent; teeth of both lobes pilose, 2–3 mm. long. Corolla exceeding calyx; standard obovate, shortly clawed, 4–5.5 mm. long, 2.5–3.5 mm. wide; wings ± oblong, broader above, slightly auricled, shortly clawed, 3–3.5 mm. long, 1–2 mm. wide; keel-petals somewhat triangular, truncate at apex, gradually narrowed to a long claw, 3.5–4 mm. long, 1 mm. wide. Fruit with a stipe 0.5–2 mm. long, 1–5-articled; articles ± obliquely oblong, straight on the upper suture, curved below, constricted about half their width at the isthmi, 3.5–5.5 mm. long, 2.5–3 mm. wide, uncinulate-pubescent throughout. Seed transversely elliptic, 2.5–5 mm. long, 1.5 mm. wide.
