Acacia echinuliflora is a species of flowering plant in the family Fabaceae and is endemic to the north of the Northern Territory in Australia. It is a tree, rarely a shrub, with fibrous or shaggy brown to black bark, narrowly elliptic or lance-shaped phyllodes, spikes of bright to golden yellow flowers, and linear to oblong pods raised over the seeds.
Acacia echinuliflora is a tree, rarely a shrub, that typically grows to a height of 4–8m (13–26ft) and has fibrous or shaggy brown to black bark. Its branchlets are terete, reddish brown and resinous. Its phyllodes are narrowly elliptic or lance-shaped with the narrower end towards the base, 90–185mm (3.5–7.3in) long and 6–14mm (0.24–0.55in) wide, thinly leathery, glabrous and shiny. The flowers are borne in one or two spikes 50–70mm (2.0–2.8in) long and are bright to golden yellow. Flowering occurs from June to August and the pods are linear to oblong, straw-coloured, 24–54mm (0.94–2.13in) long and 7–9mm (0.28–0.35in) wide and raised over the seeds alternately on each side. The seeds are oblong or elliptic, brown or black, 2.7–3.8mm (0.11–0.15in) long and 1.8–2.5mm (0.071–0.098in) wide with a folded aril.[2][3][4][5]
This species of wattle is endemic to the Northern Territory where it is commonly found along the escarpments in the western portion of Arnhem Land in the north, and down to Nitmiluk National Park in the south where it grows in sandy soils in creeks and streams draining the escarpment.[3][4][7]
1 2 Leach, Gregory John. "Acacia echinuliflora". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 8 November 2025.
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