A perennial shrub with deep, woody roots. Stem semi-decumbent or erect, 20—90 cm tall, appressed-pubescent. Leaves trifoliolate, 5—10.5 cm long; petiole up to 5 mm long; leaflets oblong, 3—10 cm x 2 cm, glabrous above, sparsely puberulous below. Inflorescence a 1—2-flowered, axillary raceme; peduncle up to 4 cm long; calyx tubular, 2—3 cm long, lobes ovate or ovate-lanceolate; corolla purple to nearly white, 5—6 cm long. Pod linear-oblongoid, 2.5—5 cm x 8 mm, stipitate, glabrous, 3—7-seeded; valves convex, ridged. Seed globose to ovoid-globose, viscid, about 3 mm long, yellow-brown. |
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