Acacias of Australia

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Acacia obtecta Maiden & Blakely




Confined to but locally common in the Paynes Find–Wubin–Kununoppin area of south-western W.A., excluding the type locality at Lake Barlee.


Obconic shrub 1.5–3 m high. Branchlets slightly ribbed, pale grey, glabrous. Phyllodes patent to ascending, linear to linear-oblanceolate, straight to slightly incurved, (6–) 7–11 cm long, (3–) 4–6 (–9) mm wide, with curved-acuminate or caudate-acuminate tip, glabrous, with 3 distant slightly raised nerves per face; minor nerves obscure and sometimes sparingly longitudinally anastomosing; gland (2–) 5–13 mm above pulvinus. Inflorescences simple, 1–4 per axil; peduncles 3–5 mm long, glabrous; heads globular, 5 mm diam., 20–36-flowered, golden. Flowers 5-merous; sepals free. Pods moniliform, to 14 cm long, 7–9 mm wide, long-stipitate, chartaceous, glabrous. Seeds longitudinal, broadly elliptic, 6–7.5 mm long, dull, mottled dark and light brown, exarillate.


Grows in red loam or clay.


W.A.: Bonnie Rock-Wialki, 11 Sept. 1957, A.R.Main (CANB, PERTH); 20 km S of Paynes Find on Great Northern Hwy, B.R.Maslin 5588 (BRI, K, MEL, NSW, PERTH).


Seemingly most nearly related to A. speckii which is most readily distinguished by its terete phyllodes. Also similar in appearance to A. heteroclita, which has very different pods with arillate seeds, longer peduncles, usually golden-sericeous new shoots, and phyllodes with appressed-puberulous tips. Superficially similar to A. websteri (sect. Juliflorae).

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 B.R.Maslin & J.Reid