[1] The shrub typically grows to a height of 3 to 4 m (9.8 to 13.1 ft) and has a bushy habit with finely ribbed and hairy branchlets.

The evergreen phyllodes have a narrowly linear shape that taper to a fine point and have a length of 12 to 19 cm (4.7 to 7.5 in) and a width of 1 to 2 mm (0.039 to 0.079 in) with three raised distant nerves.

[2] The species was first formally described by the botanist Bruce Maslin in 1980 as part of the work A contribution to the flora of central Australia as published in the Journal of the Adelaide Botanic Gardens.

It was reclassified in 2003 by Leslie Pedley as Racosperma dolicophyllum then transferred back to genus Acacia in 2006.

[2] It is commonly situated in sheltered and steep gullies in schistose hills in a small area of the Chewings Range in the southern part of the Northern Territory.