Birdsville Indigo is prostrate, much branched herb. Stem are trailing, velvet-hairy, with white hairs pressed against the stem. Leaves are compound, with 5-9 alternately arranged leaflets, 7-12 mm long, 2-5 mm broad, stalkless, with a rounded or notched tip, velvety on both sides. Inflorescence is a spike, peduncle 0-2 cm long. Bract 2 mm long. Sepal cup 3-4 mm long, velvety towards the outer side, teeth longer than the cup. Pea-shaped flowers are bright red, with the standard petal 4 mm long. Fruit 3-6 mm long, 2-3 mm broad, velvety, 1-3-seeded. Flowering: October-November.