Acacias of Australia

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Acacia sulcata var. planoconvexa R.S.Cowan & Maslin




Occurs from near Brookton S to near Albany and E to near Ravensthorpe with one outlier near Esperance, c. 150 km E of Ravensthorpe, south-western W.A.


Branchlets often pruinose apically, glabrous, infrequently minutely pilose. Phyllodes linear, planoconvex, 5–12 mm long, commonly pruinose to subpruinose, 6-nerved in all, with adaxial nerve indistinct or not apparent and 3 abaxial nerves prominent; upper surface with gland near middle of phyllode, often absent or obscure. Peduncles (2–) 5–8 mm long, glabrous. Pods to 3 cm long, 3–4 mm wide, pruinose. Seeds ovate, 2 mm long.


Grows in sand, sandy gravel, sandy loam and rocky loam, in dense scrub, mallee heath and mallee shrubland, frequently on hills and mountains in association with granite.


W.A.: 30.5 km E of Brookton towards Corrigin, R.J.Cumming 1037 (PERTH); 30.5 km N of Esperance, H.Demarz 3635 (PERTH); 16 km S of Jerramungup towards Albany, B.R.Maslin 2590 (CANB, PERTH); c. 32 km E of Albany towards Jerramungup, S.Paust 485 (PERTH); Kojonup, 15 Aug. 1969, M.Wittwer s.n. (PERTH).


Glaucous or pruinose specimens are similar superficially to the narrow phyllode form of A. leptospermoides subsp. leptospermoides, a diaphyllodinous species (for definition and references concerning diaphyllodes, see discussion under A. diaphyllodinea) which has obscurely nerved phyllodes, larger heads with twice as many flowers and curved to coiled pods.

FOA Reference

Data derived from Flora of Australia Volumes 11A (2001), 11B (2001) and 12 (1998), products of ABRS, ©Commonwealth of Australia



Minor edits by J.Reid