Shrubs, scandent, 2-5 m. Stems grayish yellow, splitting, glabrous or puberulent. Leaves 5-foliolate; rachis 15-30 cm, including petiole 5-12 cm; leaflet blades lanceolate, oblong, or narrowly oblong, 5-15 × 1.5-6 cm, abaxially grayish glabrous, sparsely puberulent, or yellow hirsute, adaxially glabrous, midvein abaxially raised and adaxially sunken, secondary veins 6-9 on each side of midvein, reticulate veins evident on both surfaces or only abaxially, base rounded or sometimes subcordate, apex acute, acuminate, or rarely obtuse. Panicles terminal, 10-25(-40) cm, yellow puberulent; flowering branchlets 6-15 cm, spreading, nodes close together. Flowers 1.2-2.4 cm. Corolla purple; standard broadly ovate, without basal calluses, outside silvery to rusty sericeous, base subcordate. Ovary linear, tomentose, with 8 or 9 ovules. Legume linear to oblong, 7-12 × 1.5-2 cm, flat, gray tomentose; valves thin or woody. Seeds 3-5 per legume, tawny, oblong or subglobose, ca. 8 × 6 mm. Fl. May-Sep, fr. Jun-Nov.
Mixed woodlands and thickets on slopes, thickets in river valleys, open places at forest margins; at elevations from 300-2,500 metres.
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Mixed woodlands and thickets on slopes, thickets in river valleys, open places at forest margins; at elevations from 300-2,500 metres.
Can be grown by cuttings or seedlings. Seeds needs soaking.
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