Erect to scrambling shrub 0.5–5 m high; branches 4-angled, glabrous. Leaves 3-foliolate or simple at base of branches with terminal leaflet largest; leaflets narrowly ovate or ovate-lanceolate to narrowly elliptic, 1.5–6.5 cm long, 0.5–2.2 cm wide, blunt and apiculate, margins entire, surfaces glabrous; petiole 0.5–1.5 cm long; lateral leaflets sessile. Flowers usually solitary, axillary or rarely terminal. Calyx 7–10 mm long, puberulent, lobes 5–8, 4–7 mm long; corolla yellow, tube 10–15 mm long, lobes 6–16, broadly obovate or oblong, 1.1–1.8 cm long, apex rounded. Berry ellipsoid, 6–8 mm diam., black. Flowers mainly spring–summer.
VVP, GipP, HSF. Native to China. Recorded in the Melbourne metropolitan area in a weedy railway verge in Heathmont and along Kororoit Creek at Deer Park.
Plants in cultivation, from which Victorian records originate, commonly have double the number of corolla lobes than what is observed in wild plants. The corolla in such wild plants has 6–8 lobes.
