Electronic Flora of South Australia
Electronic Flora of South Australia
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Electronic Flora of South Australia species Fact Sheet

Family: Leguminosae
Acacia ayersiana


Citation: J. R. Maconochie, J. Adelaide Bot. Gard. 1:182(1978).

Derivation: latus (L.)—broad, wide; folium (L.)—leaf.

Synonymy: Acacia aneura, Acacia ayersiana

Common name: broad-leaf mulga, umbrella mulga

Woody shrub or tree 2-10 m tall; bark grey fissured; hairs simple and glandular, dense on young growth less so on developed surfaces.

Phyllodes 1.5-7 cm long, 4-10 mm wide, falcate somewhat elliptic; phyllodes and stems soon with opaque resin; 3 veins conspicuous on seedlings, mature phyllodes with a few branching veins,

Inflorescence simple spike, oblong 8-30 mm; peduncle with simple and glandular hairs 3-15 mm long, flowers 5-merous.

Legumes 1-6 cm long, 5-25 mm wide, papery, sparsely hairy, oblong, transverse reticulate veins sometimes resinous, green-brown, wing 0-1 mm, rarely obvious. Seeds to 3-8 x 2-7 mm, relatively small, oval, glossy dark brown; funicle terminal, swollen into a flat creamy axil.

Distribution:  All mainland States except Victoria, var. ayersiana is rare in the North-West with a single collection from near Yudnapinna north of Port Augusta. The var. latifolia is much more widespread, throughout the North-West, Gairdner-Torrens, upper Flinders Ranges, Eastern, upper Eyre Peninsula and upper Murray regions.

S.Aust.: NW, LE, NU, GT, FR, EP.

Flowering time: A. ayersiana var. ayersiana has been collected in flower between May and October but there are relatively few records. The var. latifolia has been collected in flower in every month of the year principally between February and October with a mild peak in May.

SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: No text

Cultivation: As for A. aneura, mulga.

Author: Not yet available


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