Acacia aciphylla is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a bushy, prickly shrub with down-turned, rigid, sharply-pointed phyllodes, flowers arranged in a oval heads usually arranged in pairs in leaf axils, and linear pods up to long.
The shrub is prickly with a dense and bushy habit typically growing to a height of 0.6to. It has glabrous branchlets and phyllodes. The sessile phyllodes are decurrent on branchlets. They are rigid, erect, straight and terete to slightly rhombic in cross-section. Each phyllode is 6to in length with a diameter of about 1.5mm. It flowers from July to September producing densely packed golden-yellow flowers. The inflorescences are simple with two found 2 per axil. The heads of each inflorescence has an obloid shape and are about 6to in length with a diameter of around 22NaN2. Following flowering, seed pods are produced that have a linear shape that is slightly raised between seeds. the pods are straight with a length of about 90NaN0 and a width of 2.52NaN2.[1] [2]
The species was first formally described by the botanist George Bentham in 1855 in the journal Linnaea: Ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde.[3] [4]
The plant will grown in sandy, loamy and lateritic soils and on granite outcrops and rocky ridges in mixed shrub-land communities. It has a broken distribution between Kalbarri, Mullewa and Morawa.[1]