The iconic Sturt’s Desert Pea occurs in all mainland states except Victoria and is also found growing in the southern part of the Northern Territory.

Although more commonly recognised in the scarlet red with black boss, the flower colour forms can range from white, pale to deep pink and apricot, wither with or without a black boss. Although rare, there have been reported a bicoloured form, in which the standard is scarlet and the other petals, the wings and keel, are white tipped and edged with scarlet. There is also the Northern form of the Sturt’s Desert Pea, which is identifiable due to the paler boss.