A tall shrub. Stems thinly pubescent, leaves 2-3 cm equidistant. Leaves trifoliolate, petiolate, stipulate; petioles up to 4 mm long; leaflets up to 4.5 cm long and 1.3 cm broad, oblanceolate to oblanceolate-ovate, obtuse, recurved mucronate, nigro-punctate, thinly pubescent, becoming glabrous, sessile or sub-sessile. Stipules lanceolate, acuminate, glandular, thinly pubescent. Inflorescence terminal and axillary, spicate. Peduncles up to 2.8 mm long. Flowers in threes subtended by a common bract. Calyx-tube 2.5 mm long, 5.5 mm in diameter, veined, glandular, hirsute; lobes ovate, glandular, hirsute, ciliate, hirsute on the inner surface; upper and lateral lobes 1.5-2 mm long, up to 1 mm broad; lowest lobe 2.5-3 mm long, 1-1.5 mm broad. Vexillum 6-6.5 mm long, 5.5-6 mm broad, ovate or obovate, with a linear claw 1.5-2.5 mm long; alae 6 mm long, 2-2.5 mm broad, with a linear claw 2.5-3 mm long; carina 3-4 mm long, 1.5-2 mm broad, with a linear claw 3-3.5 mm long. Ovary pubescent; style 3.5-4 mm long, pilose.
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Perennial shrub, up to 3 m high. Leaves trifoliolate; leaflets narrowly obovate to narrowly obovate-ovate, recurved mucronate, black-dotted; lateral leaflets symmetrical. Flowers: in terminal and axillary spikes; peduncles up to 30 mm long; corolla white and purple or purplish blue; Oct.-May.