Leaves petiolate; petiole 1–3 mm. long, densely brown-pubescent; lamina ovate to obovate, or narrowly so, (1)1·5–9·8 x (0·5)1–3·6 cm., at the margin revolute, at the apex acuminate, less often acute or emarginate, at the base rounded or cuneate, sometimes subcordate, pubescent on both surfaces, glabrescent except along secondary veins and margin; midrib pubescent on both surfaces, rarely glabrescent; on each side 5–10 conspicuous secondary veins.
Corolla tube outside yellow or sometimes orange, inside yellow to orange-red, 1·5–4 mm. long, glabrous outside, or pubescent except where exposed; inside with tufts of stiff hairs at 0·3–2·2 mm. from the base; lobes yellow, sometimes orange, 1–2·5 mm. long, triangular, glabrous outside often ciliate, inside at least at the base pubescent.
Pistil 0·2–0·8 mm. long, glabrous; carpels 0·7–1 mm. long; disk with a ring 0·1–0·2 mm. high and lobes c. 0·1 mm. long, pubescent; style 0·1–0·2 mm. long; clavuncula 0·2–0·5 mm. long; stigma 0·2–0·5 mm. long.
Climbing shrub or liana, up to 5 m. high or more, twining and climbing over shrubs and in trees, and up to 20 m. long or more.
Follicles, 7–44 cm. long and 2–5 mm. in diam., slightly constricted between the seeds, brown-pubescent outside.
Flowers in 3–25-flowered axillary, fairly congested cymes; peduncle 0·5–16 mm. long, densely brown-pubescent.
Sepals 1·1–3·8 mm. long, ovate, outside pubescent, inside pubescent except at the base, ciliate.
Stamens with the filaments 0·3–0·7 m. long; anthers 1·5–2 mm. long.
Branches grey to brown; branchlets densely brown-pubescent.
Seed 0·9–1·4 x 0·15–0·25 cm. with a coma 18·35 mm. long.
Trunk up to 2 cm. in diam.