Image: Fruit
Erect or spreading shrub or tree mostly 2–8 m, from Blackdown Tableland, south-eastern Qld, S through eastern N.S.W. and A.C.T. to Monument Ridge, eastern Vic., with a western outlier near Longwood, Vic. (World Wide Wattle).
Phyllodes oblanceolate to narrowly oblanceolate or narrowly elliptic, straight to slightly curved, usually 5–15 cm long and 7–40 mm wide (rarely 5 mm or more wide), glabrous, midvein and marginal veins prominent, finely penniveine
Pods more or less straight or sometimes slightly curved, flattish, straight-sided to slightly or irregularly more deeply constricted between seeds, 5–20 cm long, 10–17 mm (sometimes wider), somewhat leathery.
Flowers
Flowers are pale yellow to white puff balls. The tannin content of the bark is approximately 18%. Following L.Pedley, Austrobaileya 1: 268 (1980), A. penninervis is regarded as comprising two varieties; however, future studies may show that var. longiracemosa warrants species status. Both varieties are variable, especially in Qld. (World Wide Wattle).