Erect, much-branched, widely spreading, dull grey-green shrubs 2-6 m high and often the same or more across, branching into a number of slender stems terete, smooth, reddish-brown to grey; bark dark grey, rough at base of main stems. 

<P>Phyllodes linear, 8-20 cm long, 1.5-3 mm broad, erect, rigid, often terete, occasionally flat but thick, minutely pubescent, numerous fine parallel longitudinal veins visible under a lens, apex reddish-brown and tapering slightly into a blunt obtuse point which often seems to wither and break away; glands basal, small. 

<P>Inflorescences simple, 1-2 per axil; spikes dense, yellow, 1-2 cm long; peduncles usually hoary, 6-15 mm long; flowers 5-merous (sepals united at base).

<P>Legumes cylindrical, 7-13 cm long, 5-8 mm diameter, hard and woody when mature, tapering slightly at both ends, hoary and marked with many brown resinous longitudinal veins, sometimes slightly constricted between the seeds. Seeds longitudinal in legumes, obloid; funicle filiform, short with 1-2 folds below the pale yellowish aril.