Liane with rather stout main stems up to c. 6 cm. diam. at base, ascending to 6 m. or more; branchlets grooved, densely fulvous tomentose when young as are the unfolding lvs. Lvs 3-foliolate on rather stout pubescent-pilose petioles c. 3 cm. long. Lflts on petiolules c. 5-10 mm. long, rather dark green, subcoriac., ovate, obtuse to acute, truncate to subcordate at base, entire to sinuate or ± crenately toothed; pubescent-pilose, at length glab.; 2.5-6 × 2-4 cm. Subfloral lflts smaller; often entire or subentire. Infl. of axillary us. ample panicles; pedicels up to 4 cm. long, slender, pilose; bracts ovate, acute to acuminate, connate. Fls strongly scented. ♂ up to 2.5 cm. diam. Sepals 5-8, yellow, pubescent-pilose without, 1·5 cm. long, ovate-oblong, obtuse to subacute. Stamens ∞, filaments c. 1 cm. long; anthers 1-2 mm. long, narrow oblong. ♀ up to 1·5 cm. Sepals 5-8, c. 1 cm. long, ovate, obtuse, pubescent-pilose without, yellow. Stamens us. abortive. Achenes c. 3 mm. long, ∞, ± pubescent-pilose; styles c. 2-3 cm. long, plumose.

2n = 16

Evergreen woody climber. Lvs glabrous or sparsely hairy, 3-foliolate, (2.3)-5.5-9 × (1.8)-4.5-8-(12) cm; leaflets thinly coriaceous, ovate, obtuse to acute; margins entire to sinuate, rarely crenately lobed or serrate; petiole hairy, 1.5-5-(9) cm long. Fls unisexual, in axillary dichasial cymes, strongly scented. Bracts paired, united, inserted about middle of pedicel. ♂ fls: sepals (5)-6-(8), imbricate, yellow, glabrous above, pilose beneath, ovate-oblong, 6-12-(23) × 2-5-(7) mm; anthers 0.8-1.5 mm long; filaments glabrous. ♀ fls: sepals 5-8, imbricate, yellow, glabrous above, pilose beneath, ovate, 6-11 × 3-5 mm; staminodes few. Achenes hairy, 2-4 mm long. Style 1.4-3 cm long at fruiting.