Shrub or small tree to 10 m tall with arching and pendulous, often sticky branches. Phyllodes narrowly linear to elliptic, mostly 5-10 cm long, 1-3.5 mm wide, thin, generally with 3 veins, the midrib the most prominent of these. Flower heads globular, of 10-17 5-parted, lemon flowers; spring. Fruit pods linear, to 10 cm long, 2-4 mm wide, papery.
A. subporosa F.Muell., which is occasionally cultivated, differs in having leaves more than 4 mm wide and flower heads with 20-25 flowers.
A 'Green Mist' PVJ 6(4)19.
A. adunca Don., Wallangarra Wattle, from Qld and NSW has reddish branchlets and young tips, long, narrow phyllodes with a hooked tip and 1 or 2 widely spaced glands on the upper margin; spring. Syn. A. accola Maiden & Betche; A. elongata DC., Swamp Wattle, from NSW has branchlets distinctly angled, phyllodes 2-4 mm wide and more than 12 times as long as broad.
Source: (2002). Mimosaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.