Erect, spindly shrub, 1.5–3 m high, 1.2–1.5 m diam., with woody rootstock; young stems terete to slightly ridged, green to dark brown, strigose with moderately dense to dense, generally fine or very small, appressed, equally biramous hairs. Leaves pinnate, (5–) 9–13 leaflets; stipules triangular, not thickened or spinescent, (1.5–) 2.5–5 (–7) mm long, glabrescent but often with dense clusters of club-shaped hairs in their axils, not persistent; petiole 6–11.5 mm long; rachis slightly furrowed, multicellular hairs between leaflet pairs dense, conspicuous, orange to red or dark brown, club-shaped. Leaflets opposite; stipellae absent; lamina elliptic to obovate, 8–22 mm long, 4–8 mm wide; upper surface green, glabrous; lower surface green, generally paler than above, with sparse, appressed hairs; apex obtuse and mucronate; veins not prominent. Inflorescences (45–) 70–115 mm long, longer than leaves; peduncle 17–28 mm long; bracts triangular, 1.5–2.5 mm long; flowers pink to purple, pedicel 1.5–2 mm long. Calyx 2.5–4 mm long, with subequal lobes less than the length of the tube, clothed with sparse to moderately dense, white to brown, appressed hairs. Standard purple, ovate to orbicular, 9.5–12.5 mm high, 10–11 mm wide. Wings oblong to spathulate, 10–12 mm long, (2.5–) 3.5–4 mm wide. Keel 11.5–13 mm long, 3.7–4.5 mm deep; apex acute to rounded; lateral pockets 1.5–2 mm long; hairs sparse, hyaline (rarely a few pale brown), at the tip and margin ciliate. Staminal tube 7–8 mm long, colourless. Ovary glabrous. Pods spreading, terete to depressed cylindrical, (21–) 28–48 mm long, 3–4.5 mm deep, brown, glabrous; apex with a distinct beak to 2.5 mm long; endocarp spotted; seeds 8–11, cuboid.
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