Acacia extensa Lindl.

Wiry Wattle

Sketch Veg. Swan Riv. Col. 15 (1839) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Spindly, erect or semi-weeping shrub to 3 m high, glabrous; branchlets angled, sometimes winged, green with yellowish ribs. Phyllodes few, usually filiform, 6–24 cm long, 0.8–1.8 mm wide, usually pentagonal, ridged, resembling branches, mucronate; veins 5, prominently raised; gland 1, approx. one third to mid-way along margin. Raceme with rachis to c. 14 cm long, branch-like; peduncles 3–8 mm long, slender; heads globular, 12–24-flowered, light golden. Flowers 5-merous; sepals united. Pods linear, submoniliform, to c. 9 cm long, 3–4 mm wide, chartaceous to thinly coriaceous; seeds longitudinal, oblong to oblong-elliptic, 4–5 mm long, shiny, dark brown; aril apical.

*DunT, *GGr, *OtP. Native to West Australia, commonly cultivated, plants naturalised in the Grampians, gowing in sandy soils. Also recorded on the south coast near Geelong, but plants have apparently not persisted at that site.

A distinctive species with branch-like leaves and inflorescences, making these organs somewhat obscure, and the flower-heads often appearing to be solitary on leafless branches.   

Created by: Andre Messina, 2016-03-07
Updated by: Val Stajsic, 2018-08-02
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 extensa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Acacia extensa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Gippsland Plain present cultivated
Otway Plain present naturalised
Greater Grampians present introduced
Dundas Tablelands present naturalised

State distribution

Distribution map
Western Australia
South Australia
New South Wales
Australian Capital Territory