Acacia rostellata is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia
The low, spreading pungent shrub typically grows to a height of 0.1to it usually has many branches with pungent and hairy branchlets. Like most species of Acacia it has phyllodes rather than true leaves. The hairy evergreen phyllodes have an inequilaterally obtriangular to obdeltate shape with a length of and a width of with a more or less prominent main nerve.[1] It blooms from August to November and produces green-yellow flowers.
It is native to an area in the Wheatbelt, Goldfields-Esperance and Great Southern regions of Western Australia growing in sand, sandy gravel or clay soils. It has a scattered distribution from around Bruce Rock in the north down to near Ongerup in the south and out as far as Lake King and Speddingup in the east. It is usually part of the heath under-storey open Eucalyptus scrubland communities.[1]