Acacia shapelleae Maslin

Multi-stemmed, glabrous, resinous and viscid shrub to c. 2.5 m high, with a strong camphor-like odour when fresh. Bark grey, finely roughened. Oldest branchlets marked by slightly raised scars where phyllodes have fallen. Stipules persistent at base of young phyllodes, linear to linear-triangular, 1–2 (–3) mm long. Phyllodes mostly terete to sub-terete, 30–50 (–60) mm long, 0.5–1 mm diam., innocuous, mostly shallowly incurved, erect on new shoots; longitudinal veins four, brown, not raised; gland microscopic (c. 0.1 mm diam.), 1–1.5 mm above pulvinus. Inflorescences simple; peduncles 20–40 mm long, base ebracteate; heads 9–12 mm diam., mostly 35–45-flowered. Flowers 5-merous; sepals ±free. Pods (30–) 45–60 mm long, (3–) 4–5 mm wide, linear, ±straight-edged, thinly crustaceous, dark brown, openly reticulate with veins slightly raised. Seeds longitudinal, obloid, c. 3.5 mm long, black, ±shiny at centre otherwise with a satin lustre; aril partially extending along one or both sides of the seed.

Grows in brown silty sand-loam or clay-loam on the upper slopes and ridges of low hills comprising outcropping Banded Iron Formation, in tree mallee (Eucalyptus ebbanoensis) over dense scrub.