Erect, bushy, glabrous shrubs 1.5-2.5 m high, branching near ground level into a number of erect ascending stems; branchlets slightly angular; bark smooth, reddish-brown. 

<P>Phyllodes linear more or less quadrangular due to the prominent resinous yellowish veins on each face, so as to appear 4-ribbed and 4-furrowed, 3-10 cm long, 1-2.5 mm broad, rigid, straight or slightly curved, glabrous, dull-green, apex tapered into a thick reddish-brown pungent point; glands small situated 5-12 mm from the base, on the upper margin. 

<P>Inflorescences in axillary glabrous racemes much shorter than phyllodes, usually consisting of 3-5 pedunculate heads, which are at first enclosed by brown ovate ciliate early deciduous bracts, raceme rachis sometimes growing out into a new shoot after flowering; flower-heads globular, mid-yellow, 15-20-flowered; peduncles slender, 6-10 mm long, glabrous; flowers 5merous. 

<P>Legumes narrowly oblong, straight or slightly curved, 4-8 cm long, 5-6 mm broad, chartaceous, glabrous, slightly viscid, brown, margins slightly constricted between seeds. Seeds longitudinal in legume; funicle very short, aril oblique small.