Acacia argyrophylla Hook.

Silver Mulga

Bot. Mag. 74: t. 4384 (1848) APNI

Taxonomic status:Accepted

Occurrence status:Extinct

Establishment means:Native

Threat status:Victoria: extinct (x)

Dense shrub, 2–3 m high and often the same across. Similar to A. brachybotrya and A. dictyocarpa but differing mainly in the following ways: new shoots silky with bright greenish-yellow hairs' penultimate branchlets silky with white hairs; phyllodes oblanceolate, 2.5–5(–6) cm long, 6–15 mm wide, sometimes to 6 cm long and 2.5 cm wide at base of branchlets, 2–4.5 times as long as wide, silvery blue-grey due to silky cover of silvery-white hairs which totally clothe the lamina, obtuse; racemes with rachis usually 4–10 mm long, covered with dense, appressed, greenish-golden hairs; peduncles c. 10 mm long, indumentum as on racemes except hairs occasionally silvery white; heads 25–45-flowered. Pods 7–11 mm wide; seeds 5–7 mm long. Flowers Oct.

Also SA. Known in Victoria from a single collection (in 1892) from the Murtoa area and now presumed extinct in this State. In South Australia it grows mostly in woodland and open scrub, often in alkaline soils.

Acacia argyrophylla is distinguished from A. brachybotrya by its longer phyllodes which are densely clothed with silky appressed hairs (bright greenish-yellow on new shoots, silvery-white on mature phyllodes) and its racemose inflorescences.

Source: Entwisle, T.J.; Maslin, B.R.; Cowan, R.S.; Court, A.B. (1996). Mimosaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-08-27
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Fabales
family Fabaceae
genus Acacia
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Acacia argyrophylla in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Acacia argyrophylla in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Wimmera extinct native

State distribution

Distribution map
Western Australia
South Australia
New South Wales