Macarthuria australis is an erect or spreading, wiry shrub, in the family Macarthuriaceae endemic to Western Australia.

[3] It grows from 0.15-0.75 m high and has white/white-cream flowers, and may be seen in flower from May to February although mainly from August to September.

It grows on sand and laterite, on coastal sandplains, sandhills, and roadsides.

[3] The seeds are dispersed by ants.

[4]