Acacia leprosa Sieber ex DC.

Cinnamon Wattle

Prodr. 2: 450 (1825) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Viscid, somewhat aromatic shrub, 1–5 m high; branchlets sometimes flexuose, rarely pruinose, terete or angled towards extremities, usually with appressed, minute hairs on ribs and either non-resinous or with a thin layer of resin between ribs. Phyllodes elliptic or narrowly elliptic to lanceolate, rarely oblong-elliptic, oblanceolate-elliptic or linear, (3–)5–14 cm long, (3–)7–30 mm wide, straight to slightly curved, thin, resinous-punctate, with appressed, minute hairs on margins and midrib, sometimes glabrous, mostly acute or acuminate; veins 1 or 2, lateral veins few to numerous; gland 0–8 mm above pulvinus. Peduncles commonly 2 per axil, (2–)4–8(–11) mm long, sometimes in 2–6-headed racemes with rachis 2–4 mm long, subglabrous to densely puberulous, basal bract mostly caducous; heads globular, 25–40(–45)-flowered, pale yellow to lemon-yellow. Flowers 5-merous; sepals united. Pods linear to narrowly oblong, 3–9 cm long, 4–6 mm wide, thinly coriaceous to firmly chartaceous, glabrous; seeds longitudinal, obloid to obloid-ellipsoid, 4–5 mm long, shiny, dark brown to black, aril terminal.   

CVU, EGL, EGU, GipP, Gold, GGr, HFE, HNF, HSF, MonT, OtP, OtR, Strz, VAlp, VRiv, VVP.

5 varieties, 4 in Victoria.

This species was previously characterised by the phyllodes only having 1 main vein. However, the definition of A. leprosa has expanded to include plants with 1 or 2 veins per phyllode. Of the 4 varieties of A. leprosa in Victoria only A. leprosa var. uninerva has phyllodes with a single vein, the other 3 varieties have 2 veins per phyllode. Acacia leprosa is now principally differentiated from A. verniciflua on the basis of branchlet indumentum. Acacia verniciflua has bracnlets with scarcely raised ribs that are more or less glabrous with dense resin in the space between them, while A. leprosa has strongly ribbed branchlets that are usually hairy on ribs and have little to no resin in the space between ribs (see Maslin & Murphy 2009). The inter- and infraspecific taxonomy of this group is incredibly complicated, and as with previous treatments, many of the characters used in this account may prove to be arbitrary at best.

Besides A. verniciflua and allied species (A. rostriformis, A. exudans, and A. stictophylla) A. leprosa is also likely to be confused with A. ausfeldii, A. dodonaeifolia or A. cognata.

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: Andre Messina, 2016-03-18
 
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Distribution map

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Acacia leprosa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Acacia leprosa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Victorian Riverina present native
Gippsland Plain present native
Otway Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Otway Ranges present native
Strzelecki Ranges present native
Monaro Tablelands present native
Highlands-Far East present native
Victorian Alps present native

State distribution

Distribution map
State
Western Australia
Queensland
New South Wales
Victoria
Tasmania