Herbaceous perennial; stems sparsely to moderately hairy, erect, branched from base. Leaflets 8-15, usually ± glabrous above, sparsely to moderately sericeous below, narrowly elliptic to oblanceolate, acute to acuminate, 30-130 × (5)-10-30 mm; stipules oblong-lanceolate, 15-35 mm long. Infl. 15-60 cm long, many-flowered; peduncle up to 15 cm long. Lower fls alternate; upper fls subverticillate; pedicels 5-14 mm long. Calyx densely hairy; upper lip shallowly 2-toothed; lower lip slightly longer, entire. Corolla blue, purple, orange, yellow, pink or white, often of 2 colours, not or slightly scented, 12-20 mm long. Pod densely villous, 5-10-seeded, 30-50 mm long; seeds ellipsoid, smooth, dark brown and somewhat mottled, c. 2 mm long.