Lianas, 1-3 m. Bark brown. Branchlets brown tomentose, glabrescent. Leaves 13-foliolate; rachis 15-25 cm, including petiole 3-4 cm; leaflet blades oblong-lanceolate to elliptic-lanceolate, 4-8 × 2-3 cm, papery, abaxially rusty pubescent, glabrescent, and reddish brown when dry, adaxially glabrous and shiny but glaucous when dry, base rounded, margins slightly revolute, apex acute and with a short tip. Racemes axillary, usually congested near apex of branchlets to form large panicles, ca. 30 cm, brown tomentose. Pedicel and calyx tomentose. Flowers 2.5-3.5 cm, fragrant. Corolla white, creamy, or pale pink; standard orbicular, glabrous, with 2 basal calluses. Ovary tomentose, with numerous ovules. Legume linear, 10-15 × 1-2 cm, flat, brown tomentose, base tapering to a short stipe, apex beaked; valves woody. Seeds 4-6 per legume, black, ovoid, ca. 10 × 8 mm. Fl. Jul-Sep, fr. Aug-Oct.
Open places, sparse woodlands;at elevations from 200-1,700 metres. Dry level land, open forest, forested ravines, in thickets; on dry clayey or sandy soil among scattered shrubs, trailing over trees and tall shrubs.
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It is a subtropical plant.