Sturt's Desert Pea is a member of Fabaceae, subfamily Faboideae, however its flowers are so different from its relations that it is almost unrecognisable as a member of the pea family . The flowers are around 9 centimetres in length and grow in clusters of around half a dozen on thick vertical stalks, which spring up every 10-15 centimetres along the prostrate stems, which may be 1 to 1.5 metres in length. The plant blooms from spring to summer, particularly after rain. There is a natural pure white form, as well as hybridised varieties which can have flowers ranging from red to pink, as well as yellow, with or without the central boss . Approximately 15 silky grey-green leaves rise from each prostrate branch; both branches and leaves are covered with soft hair-like filaments. The fruit is a legume, about 5 centimetres long, and yields several flat, kidney-shaped seeds at maturity.