Shrubs, scandent. Bark yellow, split longitudinally. Stems to 20 m, terete, sericeous and scarlet strigose when young, glabrescent. Stipules narrowly triangular, ca. 6 mm. Leaves (13-)17-or 19-foliolate; rachis 25-35 cm, including petiole 5-8 cm; stipels filiform, caducous; petiolules 3-4 mm; leaflet blades oblong, 6-10 × 2-3.5 cm, papery or leathery, both surfaces silvery pubescent but glabrescent or abaxially densely bright brown hirsute and adaxially rough, secondary veins 7-9 on each side of midvein, base rounded and asymmetric. Panicles cauliflorous, rough with scars of fallen bracts; bracts ca. 2 cm, membranous, sericeous. Pedicel ca. 2 cm. Flowers ca. 2.5 cm. Calyx cup-shaped, with trichomes, adaxial pair of teeth connate. Corolla lilac, abaxially puberulent. Legume spindle-shaped, ca. 17 × 9 cm, velutinous, indehiscent, persistently hanging on trunk. Seed 1 per legume, dark brown, reniform, ca. 8 × 4.5 cm, smooth, shiny; hilum 3.5-4 cm. Fl. Jul-Aug, fr. Sep-Nov.
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A woody vine or shrub that lies along the ground. The bark is yellow and splits along its length. The stems are 20 m long. The leaves are 25-35 cm long with 17-19 leaflets. The leaflets are oblong and 6-10 cm long by 2-3.5 cm wide. The flowers are along the stem. The pods are spindle shaped and 17 cm long by 9 cm wide. They hang on the trunk. There is 1 dark brown kidney shaped seed in each pod.
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