Rytidosperma setaceum, known by various common names including small-flowered wallaby-grass, mulga- or bristly wallaby-grass, is a species of grass native to Australia.

Originally described by Robert Brown under the name Danthonia setacea,[2] it was transferred into Austrodanthonia by Hans Peter Linder in 1993[3] and finally Rytidosperma in 2011.

[1][4] From the earlier name, setacea means bristle or stiff hair.

It is a species with short bristles and the smallest delicate in appearance of the wallaby grasses.

[5] It grows as a perennial clump, with flowering stems from 15 to 60 cm high.