The Wonga Wonga Vine is native to Australia and is a popular garden plant.
Plants are very variable as regards the form of the leaflets and flower size and colour.
The woody vines grow as a scrambler or stem twiner.
Pale brown branches can be up 6 m or more long.
Glossy pinnate leaves are oppositely arranged.
The juvenile and adult leaves are different.
The young leaves are shorter (2 to 8 cm) with more, thinner leafelts (up to 17) with blunt teeth.
Adult leaves are up 16 cm long with 3 to 7 (9) leaflets up to 8 cm long.
The ovate leaflets, on 1 to 2 mm petiolules, have a pointed tip and a smooth edge.
Drooping inflorescences are up to 15 or 20 cm long with many flowers.
Flowers, up to 2.5 cm long, are funnel or tube shaped on stalks a few mms long.
The hairy calyx, to 5 mm long, has very short lobes.
The corolla, of 5 fused petals has spreading lobes about 5 mm long.
Internally the petals are hairy with short ones on the lobes and longer ones in the throat.
Colours vary from pure white, creamy-white or brown with a maroon or purple throat.
There are 2 unequal pairs of stamens with the anthers in each pair touching.
The superior ovary, about 4 mm long, has a single style with a 2-lobed stigma.
Fruit capsules, around 10 cm long with a pointed tip, mature from green to brown.
They contain many flat seeds with papery wings.
There are numerous cultivars with different coloured flowers, yellow with brown tints;
red with a cream throat; cream flower with a maroon throat and also a pure white form.