Indigofera australis, known as Australian Indigo, is an attractive species of leguminous shrub in the genus Indigofera (Fabaceae family). The genus name "Indigofera" is Neo-Latin for "bearing Indigo" (Indigo is a purple dye originally obtained from some Indigofera species), while "australis" from the Latin, means "southern", referring to the geographical distribution of the species.