The Fat-leaved Wattle (also known as Fat-leaf Wattle) is a dense, smooth, light-green shrub. It grows up to 1–2 m in height and often spreads 2–3 m across. Multiple ascending, arching branches extend from just above ground level or from ground level. The branchlets are smooth and reddish-brown, with thin bark that is pale grey at the base of the stems. The phyllodes (modified leaf stems) are 1–3.5 cm long, 2–3 mm in diameter and can be straight or hooked and cylindrical or somewhat compressed. They are rigid, thick, fleshy and light green in colour. The surface of the phyllodes becomes wrinkled and grooved when dry, and the apex ends abruptly with a hard, thick point. The flower-heads are simple and usually solitary or twin, though sometimes have up to four heads. They are smooth and deep yellow, with 20–30 individual flowers.
Fat-leaved Wattle |
Status: Endangered on the EPBC Act list
Government evidence of impact of climate change:
Australian Government, Conservation Advice, Acacia pinguifolia
The species is found in areas with an average annual rainfall of 400 mm to 500 mm (Whibley 1980); though rainfall in these areas is likely to decrease due to climate change (CSIRO Bureau of Meteorology 2015).
Climate change is likely to increase the frequency; extent and severity of bushfires in southern Australia (CSIRO Bureau of Meteorology 2015).
The Fat leaved Wattle is also threatened by habitat loss; disturbance and modification through inappropriate fire regimes; land clearing and road and rail maintenance.
Gallagher (2020) estimated that 1 of modelled range of Fat leaved Wattle were within the fire impacted area.