[3] is a species of flowering plant in the family Fabaceae and is endemic to a small area along the west coast of Western Australia.

Acacia anomala has a slender rush-like habit and typically grows to a height of 0.2 to 0.5 metres (0.7 to 1.6 ft).

There are dark brown bracteoles prominent at the bud stage, but fall off as the flowers open.

[3][4][5] Acacia anomala was first formally described in 1978 by Arthur Bertram Court in the journal Nuytsia from specimens collected by Charles Austin Gardner and H.H.Kretchmar in 1961 between Muchea and Chittering.

[8] In 2003, Leslie Pedley transferred this species to the genus Racosperma as R. anomalum in the journal Austrobaileya,[9][10] but that name was not recognised by the Australian Plant Census when the dispute regarding the name Acacia was resolved in the International Botanical Congress.