Plants sometimes short-lived, delicate, (4–)10–25(–30) cm, strigose-strigulose, villous-hirsute, or villosulous; from subterranean or ± branched, superficial caudex, with many naked, slender branches below ground. Stems prostrate to decumbent, (0–)2–9(–12) cm underground, strigose-strigulose, villous-hirsute, or villosulous. Leaves 1–4.5(–5.5) cm; stipules usually connate-sheathing at proximal nodes, sometimes distinct throughout, 1–4.5(–5) mm, papery-scarious at proximal nodes, thinly herbaceous at distal nodes; leaflets (3–)7–13, blades oblanceolate- or obovate-cuneate, 2–12 mm, apex retuse or truncate and apiculate, surfaces villous abaxially, sparsely so adaxially. Peduncles incurved-ascending, 0.4–2.5 cm. Racemes (2 or)3–13-flowered, flowers spreading; axis (0.2–)0.4–1.2 cm in fruit; bracts 0.8–2.4 mm; bracteoles 0. Pedicels 0.7–1.8 mm, disjointing in age. Flowers (5.2–)6–8.5 mm; calyx shallowly campanulate, 3.2–5.8(–6.2) mm, villous or villosulous, tube 1.3–2.6 mm, lobes linear-lanceolate or setaceous, (1–)1.4–3.6 mm; corolla whitish or yellowish, banner and keel tips with lilac veins; banner abruptly recurved through 90–100°; keel 3.4–5.3 mm, apex bluntly triangular, obscurely beaklike. Legumes spreading or declined (often humistrate), pale green or minutely purple-dotted becoming stramineous, straight or slightly incurved, semi-ovoid or ovoid-ellipsoid, bladdery-inflated, somewhat dorsiventrally compressed, 8–20 × (5–)6–11(–13) mm, unilocular or subunilocular, papery-membranous, sparsely long-villous or villosulous. Seeds (3–)5–9.