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Straggling and scrambling, wide ranging, stout evergreen shrub to large woody vine, developing aerial roots as it climbs; shoots glabrous. Leaves alternate; lamina elliptic to broadly elliptic or ± obovate, (7–) 9–15 (–18) cm long, (3.5–) 5–8 (–11) cm wide, obtuse to broadly cuneate at base, entire, obtuse to shortly acuminate at apex, thickish, dark green and ± shiny above, paler green below, variegated in some cultivars; petiole distinct, often purplish. Flowers sweet scented, open mostly at night; pedicel stout, 1–2 cm long. Calyx tubular, 5–7 cm long, unequally divided, (3–) 5-lobed, green. Corolla somewhat cup-shaped, 16–24 cm long, 10–13 cm diam., with a relatively narrow tube (that opens out broadly to form a 'cup' before dissection), golden yellow with 5 purple or purplish brown stripes inside, begins yellow or white with yellow centre, then darkens with age through a range of shades of yellow to become golden yellow; lobes 5–8 cm long, becoming reflexed to rolled back. Stamens 5; filaments 9–10 cm long; anthers versatile. Style 20–25 cm long; stigma capitate. Berry conoid, 4–6 cm long, with numerous seeds.
A climbing shrub. It attaches to other plants. It grows 1.6 m tall. The leaves are broadly oval and 14 cm long. They taper tot he tip. The flowers can occur singly or in a group. They are on a short stout stalk. The fruit are oval and smooth and shiny. They are 7 cm across.
