Acacia diallaga

The intricate shrub typically grows to a height of 0.5 to 1.5 mm (0.020 to 0.059 in) but can reach as high as 3 m (9.8 ft) and has a dense spreading habit. It has glabrous and lenticellular obscurely ribbed branchlets. Like most species of Acacia it has phyllodes rather than true leaves. The glabrous, rigid, green to grey-green to blue-green phyllodes have a narrowly elliptic to oblong-elliptic or somewhat lanceolate shape are a little asymmetric. The phyllodes are straight to slightly recurved with a length of 11 to 36 mm (0.43 to 1.42 in) and a width of 3 to 7 mm (0.12 to 0.28 in) and pungent with three main nerves.[1] The phyllodes change colour to a purple red colour in times of drought and revert to the regular colour following rains.

It is native to a small area in the Wheatbelt region of Western Australia around Perenjori.[2] near Karara and Warriedar Stations to the east of Morawa where it is often situated on slopes or crests of low rocky hills growing in skeletal soils as a part of Allocasuarina or Acacia shrubland communities.[1]

• List of Acacia species