Acacias of Australia

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Acacia hastulata Sm.




Occurs from Scott R. and S of Nannup SE to Albany, and near Esperance, south-western W.A.


Often intricate shrub 0.3–2 m high. Branches often virgate and arching downwards, reddish to orange-brown. Branchlets sparsely to moderately shortly pilose. Stipules setaceous to narrowly triangular, 2.5–4 mm long. Phyllodes crowded, patent, hastate-acuminate with the abaxial lobe rounded and the gland-bearing adaxial lobe angled, sometimes ±cordiform, 3.5–6 mm long, 2–3 mm wide, pungent, with slender, c. 1 mm long cusp, rigid, green, normally glabrous; midrib central, prominent; lateral nerves absent. Inflorescences simple, 1 per axil; peduncles 2–4 (–7) mm long, glabrous; heads globular, 3–5-flowered, cream. Flowers 4-merous; calyx united, cupular. Pods terete, narrowed at both ends, curved, to 5.5 cm long, 1.5–2 mm diam., red-brown, striate, subglabrous. Seeds longitudinal, oblong to slightly elliptic, 2.5–3.5 mm long; aril terminal.


Usually grows in swampy places often with Melaleuca or Banksia, also in Karri (Eucalyptus diversicolor) forest.


W.A.: 34.5 km W of Denmark towards Walpole, B.R.Maslin 3784 (MEL, PERTH); Stirling’s Terrace [Albany townsite], L.Preiss 959 (C, FI, G, GOET, HBG, K, L, LUND, M, MEL, MO, NAP, NY, P, STR, W); on Le Grand Rd c. 2 km from beach, I.Solomon 406 (PERTH).


Distinguished from other members of the ‘A. horridula group’ by its phyllode shape and, except A. inops, glabrous peduncles (fide B.R.Maslin, Nuytsia 2: 275 (1978)).

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.Rogers