This South African shrub to 2 m high is widely naturalised across southern Australia and has become invasive in coastal areas.
These shrubs are most readily recognised by their mauve-purple, pea-shaped flowers produced throughout most of the year, predominantly during spring. Flowers develop two-celled flattened seed capsules that ripen from green to papery brown.
Whilst the plainer form with greenish lower petals is frequently observed as weedy, the showier cultivar 'Grandiflora' with larger flowers and purple lower petals has also been observed readily spreading from plantings.