Acacia omalophylla A.Cunn. ex Benth.

Yarran

London J. Bot. 1: 365 (1842) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: endangered (e); listed in Flora and Fauna Guarantee Act 1988

Shrub or tree, 5–10 m high, often suckering; branchlets angular, later terete, ribbed, with appressed, minute hairs or glabrous, white-resinous deposit sometimes evident. Phyllodes spreading, narrowly elliptic-oblong, 4–11 cm long, 4–9 mm wide, straight to slightly curved, rigid-coriaceous, glabrous or with few minute hairs towards base, sometimes white-resinous, curved-acute; veins numerous, obscure, closely parallel. Racemes 2- or 3-headed, rachis 1–5 mm long, sometimes with appressed, minute hairs; peduncles 2–6 mm long; heads globular, 5–8 mm diam., 20–48-flowered, golden; bracteoles oblong to obovate. Flowers 5-merous; sepals united. Pods linear, slightly raised and irregularly constricted between seeds, to 9 cm long, 3–5 mm wide, straight to slightly curved, chartaceous or coriaceous, longitudinally veined, glabrous or nearly so, margins thickened; seeds longitudinal, broadly elliptic, 3–5 mm long, dark brown, aril small, apical. Flowers Sep.

MuF, MuM, MSB, NIS, VRiv. Also Qld, NSW. Widespread in New South Wales but just crossing the Murray River into Victoria where present mainly as remnant populations in paddocks and roadsides.

Closely related to A. melvillei which has minutely pubescent phyllodes, smaller heads, broader pods with transverse seeds and more rigid and commonly broader phyllodes. It is also related to A. pendula which has densely and minutely pubescent phyllodes, smaller heads of generally fewer flowers, broad, flat legumes which have 2–3 mm wide wings and discoid, transverse seeds.

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.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Fabales
family Fabaceae
genus Acacia
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Acacia omalophylla in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Acacia omalophylla in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present native
Wimmera present cultivated
Victorian Riverina present native
Murray Scroll Belt present native
Murray Fans present native
Northern Inland Slopes present native

State distribution

Distribution map
State
Queensland
New South Wales
Australian Capital Territory
Victoria