The sometimes mottled seeds inside have an oblong to elliptic or circular shape and are 1.5 to 2.5 mm (0.06 to 0.10 in) in length.

[4] The species was first formally described by the botanist George Bentham in 1837 as part of the Bentham, Stephan Endlicher, Eduard Fenzl and Heinrich Wilhelm Schott work Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in Sinu Regis Georgii collegit Carolus liber baro de Hügel.

It was reclassified as Racosperma lasiocarpum in 2003 but transferred back to the genus Acacia in 2006.

[5] There are three varieties: It is native to an area in the Wheatbelt, Goldfields-Esperance and Great Southern regions of Western Australia[3] with the bulk of the population found south west of a line from Kalbarri to Esperance.

[4] The plant is found in a range of habitat including in seasonally damp areas, in and around swamps, on flats and coastal dunes an can grow in a variety of soils.