Shrubs, scandent, to 6 m. Stems terete, rough, ridged, glabrescent. Leaves 5-foliolate; rachis 15-25 cm, including petiole 3-4 cm; stipels ca. 4 mm; petiolules ca. 4 mm; leaflet blades obovate-elliptic, basal pair ca. 5.5 × 3 cm, lateral pair and terminal one ca. 15 × 7 cm with laterals rather smaller than terminal, papery, abaxially sparsely hirsute and particularly evident on veins, adaxially glabrous except midvein, base broadly cuneate, rounded, or rarely subcordate, apex acute. Panicles terminal, 10-15 cm; flowering branchlets spreading to 6 cm, with dense appressed trichomes. Flowers 1.2-1.6 cm. Corolla red to mauve; standard ovate, outside rusty sericeous, basally thickened and emarginate. Ovary shortly stipitate, tomentose, with 5-7 ovules. Legume linear-oblong, ca. 13 × 2 cm, inflated but contracted between seeds, densely gray pubescent. Seeds 1-4 per legume, dark violet, ellipsoid, 1.4-1.8 cm. Fl. Feb-Jul, fr. Aug-Nov.
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A shrub. It grows 6 m tall. The stems are rough and have ridges. The leaves have 5 leaflets. The leaflets are oval and vary from 6 cm long by 3 cm wide at the base to 15 cm long by 7 cm wide at the end. The flowers are in groups 10-15 cm long at the ends of branches. The flowers are 1.5 cm across. The pods are long and narrow. They are 13 cm long by 2 cm wide and contracted between the seeds. There are 1-4 seeds. These are oval and dark violet. They are about 15 cm across.
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