Lianas, glabrous except for pilose calyces and ovaries. Leaves 5-or 7-foliolate; rachis 13-25 cm, including petiole (3.5-)5-10 cm; leaflet blades obovate-elliptic to obovate, 5-15 × 2.5-6 cm, subleathery, secondary veins 6-8(-10) on each side of midvein and slightly prominent, base rounded, apex shortly and obtusely acuminate. Pseudopanicles axillary, 6-20 cm, with few branches, glabrous; rachis nodes with 1-3 fascicled flowers. Pedicel 5-12 mm. Flowers 1-1.2 cm. Calyx shallowly cup-shaped, 2-3 mm. Corolla whitish to pale red, 8-10(-12) cm, glabrous; standard broadly ovate. Ovary sessile, glabrescent. Legume ligulate-oblong, 7-10(-15) × 2-4 cm, thin, glabrous, reticulate veined; abaxial suture with a 2-3 mm wide wing, adaxial suture with a 6-8 mm wide wing. Seeds 1(or 2) per legume. Fl. Apr-May, fr. Nov-Jan.
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