Acacia consanguinea is a shrub of the genus Acacia and the subgenus Plurinerves that is endemism to south western Australia.
The spreading broom-like shrub typically grows to a height of 0.4to. It has terete and nerveless ash grey coloured branchlets with caducous stipules. Like most species of Acacia it has phyllodes rather than true leaves. The ascending to erect evergreen phyllodes are straight to shallowly incurved with a length of and a diameter of and have eight obscure nerves.[1] It blooms from August to September and produces yellow flowers.
It belongs to the Acacia fragilis group related to A. fragilis and A. uncinella.[1]
It is native to an area in the Goldfields-Esperance and the Wheatbelt regions of Western Australia where it is commonly situated on low rises and plains growing in gravelly sandy soils. The range of the shrub extends from around Muntadgin in the west to as far east as Coolgardie with at least one outlying population found around Wialki much further to the north where it is usually a part of scrub or heath communities.[1]