Acacia siculiformis, commonly known as dagger wattle or creek wattle,[2] is a species of flowering plant in the family Fabaceae and is endemic to the south-east of Australia. It is a glabrous shrub with rigid, sharply pointed, lance-shaped to linear or narrowly elliptic phyllodes, spherical heads of pale yellow flowers and oblong to narrowly oblong, papery pods.
Acacia siculiformis is a glabrous shrub that typically grows to a height of 2–3m (6ft 6.7in– 9ft 10.1in) but is sometimes procumbent. Its phyllodes are sessile, rigid, sharply pointed, lance-shaped to linear or narrowly elliptic, 10–35mm (0.39–1.38in) long and 1.5–4mm (0.059–0.157in) wide. There are stipules about 0.5mm (0.020in) long at the base of the phyllodes. The phyllodes are normally slightly asymmetric and have a prominent mirib. The flowers are usually borne in a single spherical head in axils on a peduncle up to 13mm (0.51in) long, each head 4.5–7mm (0.18–0.28in) in diameter with 30 to 40 pale yellow flowers. Flowering occurs from August to November and the pods are oblong to narrowly oblong and papery, up to 55mm (2.2in) long and 4–7mm (0.16–0.28in) wide. The seeds are oblong to elliptic, 3.0–3.5mm (0.12–0.14in) long and dark greyish brown to black.[2][3][4][5][6]
Taxonomy
Acacia siculiformis was first formally described in 1842 by George Bentham in the London Journal of Botany from an unpublished description by Allan Cunningham of specimens he had collected.[7][8] The specific epithet (siculiformis) refers to the dagger-like shape of the phyllodes.[2]
Distribution and habitat
Dagger wattle grows in forest and woodland, often in soils derived from granite. It occurs from northern New South Wales through the Australian Capital Territory to eastern Victoria and a few places in Tasmania. In New South Wales it is found between Glen Innes and Walcha in the north, between Captains Flat and Gundagai in the south,[3] and south through the Australian Capital Territory to Mount Buller in Victoria.[6] It is widespread in north-eastern Victoria in open forest and subalpine woodland,[4] and there are scattered populations in the east of Tasmania.[9]
1 2 3 Maslin, Bruce R. "Acacia siculiformis". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 4 September 2025.
1 2 Entwisle, Timothy J.; Maslin, Bruce R.; Cowan, Richard S.; Court, Arthur B. "Acacia siculiformis". Royal Botanic Gardens Victoria. Retrieved 4 September 2025.
1 2 "Acacia siculiformis"(PDF). Tasmanian Government, Threatened species section, Department of Primary Industries, Parks, Water and Environment. Retrieved 4 September 2025.
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