Herbs, perennial, 50-80 cm, puberulent. Rootstock woody. Stem terete, strong, fleshy, decumbent with end ascending. Leaves sessile; stipules absent or present as inconspicuous dark glands; rachis 4-12 mm; leaflets 5(-7), all similar in shape, oblanceolate to narrowly obovate, 1-2(-4) cm, base cuneate, apex acute to almost rounded with a cusp. Heads (1 or)2-6(-8)-flowered; peduncle (0.6-)2-3 cm; sterile bract with 1-3 leaflets; subtending floral bracts present, wholly glandular or rarely with a minute blade and a pair of glands; pedicels short, pubescent. Flowers (8.5-)10-14.5(-20) mm. Calyx 7-11 mm; teeth subulate, as long as or longer than tube. Corolla white, occasionally pale pink or tinged with violet, keel dark spotted with reddish or pink tip; keel incurved by acute angle, shortly rostrate. Ovary linear, glabrous; style (3-)4.5-6.5 mm. Legume cylindric, 3-5 cm × 2.7-4.4 mm, straight, valves twisted. Seeds numerous, globose, smooth. Fl. Sep-Mar.
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