It has variable foliage and the phyllodes are generally thin with a narrowly elliptic to oblanceolate or obovate shape.

The phyllodes are 1.5 to 5 cm (0.59 to 1.97 in) in length and 2 to 7 mm (0.079 to 0.276 in) wide with a prominent midvein and obscure or faint lateral nerves.

The inflorescences are found in groups to 5 to 15 in axillary raceme with spherical flower-heads that have a diameter of 4.5 to 6 mm (0.18 to 0.24 in) and contain 15 to 30 bright yellow flowers.

[2] The species was first formally described in 1829 by the botanist Ludwig Reichenbach as part of the work Iconographia Botanica Exotica.

[3] The specific epithet is derived from the Latin word decorus in reference to the plants graceful appearance.