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Flora of Australia Online

Acacia murrayana F.Muell. ex Benth., Fl. Austral. 2: 370 (1864)
Murray’s Wattle, Sandplain Wattle, Colony Wattle, Powder Bark Wattle.

Racosperma murrayanum (F.Muell. ex Benth.) Pedley, Austrobaileya 2: 352 (1987). T: Subtropical New Holland [near St George, Qld], 17 Nov. 1846, T.L.Mitchell ‘444’ ; lecto: K, fide L.Pedley, Austrobaileya 1: 284 (1980); Cooper Ck, Qld/S.A., J.Murray s.n. ; paralecto: MEL.

Acacia frumentacea Tate, Rep. Horn Sci. Exped. pt 3: 156, 187 (1896); Trans. Roy. Soc. S. Australia 19: 81 (1895), nom. nud.  T: Flooded ground, Hugh R., N.T., 23 July 1894, [R.Tate s.n. ]; syn: AD, a note by C.M.Eardley on this sheet: ‘On 23/7/94 the Horn Expedn. camped at Alice Well, lat. 24°50'S, long. 134°15'E’.

[Acacia leptopetala auct. non Benth.: G.Bentham, Fl. Austral. 2: 370 (1864), as to Murchison R., A.Oldfield ; F.J.H. von Mueller, Iconogr. Austral. Acacia dec. 5 (1887); J.H.Maiden, J. & Proc. Roy. Soc. New South Wales 49: 495 (1916)] 

Illustrations: G.M.Cunningham et al. , Pl. W New South Wales 368 (1981); B.R.Maslin, in J.P.Jessop (ed.), Fl. Central Australia 120 (1981); A.A.Mitchell & D.G.Wilcox, Arid Shrubland Pl. W. Australia 280–281 (1988); T.Tame, Acacias SE Australia 153, fig. 167, pl. 167 (1992); D.J.E.Whibley & D.E.Symon, Acacias S. Australia 2nd edn, 133 (1992).

Shrub or tree to 5 (–8) m, sometimes suckering and forming colonies. Branchlets often pruinose, glabrous. Phyllodes linear to narrowly elliptic, sometimes oblanceolate, 5–15 cm long, 1.5–8 (–12) mm wide, with a minute callous ±curved mucro overtopping the gland, thinly coriaceous, often drying finely longitudinally wrinkled, pale green to glaucous, glabrous; midrib not prominent; lateral nerves obscure and longitudinally anastomosing; glands basal, and at base of mucro. Inflorescences 2–10-headed racemes; raceme axes 1–6 cm long, slender, glabrous; peduncles 4–10 (–15) mm long, slender, glabrous; heads globular, densely 25–50-flowered, light golden to mid-golden. Flowers 5-merous; sepals ±free. Pods narrowly oblong, prominently rounded over seeds, to 9 cm long, 8–12 mm wide, chartaceous, sometimes pruinose, glabrous. Seeds transverse to oblique, oblong, elliptic, ovate or ±orbicular, 4–5.5 mm long, shallowly depressed at centre, dull, black, exarillate. Fig. 38K–N.

Widespread in the arid zone from North West Cape and Shark Bay, W.A., through N.T. and S.A. to the western margin of the Great Divide near Mitchell (Qld) and Narrabri (N.S.W.). Grows in sand on dunes, plains or along streams, often with mulga or spinifex. Map 212.

W.A.: 5.6 km S of Menzies towards Kalgoorlie, B.R.Maslin 1935 (MEL, PERTH). N.T.: 29 km SE of Aileron township, M.Lazarides 5772 (K, PERTH). S.A.: Panaramitee, G.Gardiner (AD96650302); c. 12 km NE of Innamincka, D.J.E.Whibley 2457 (PERTH). Qld: near Nebine Ck, L.Pedley 2417 (K, PERTH). N.S.W.: 17 km W of ‘Tundulya’, J.Pickard 2015 (CANB n.v. , K, NSW).

Future studies may show a need to recognise infraspecific taxa to accommodate the considerable variation in phyllode shape, width and colour.

Acacia murrayana together with A. gelasina , A. pachyacra , A. praelongata and A. subrigida comprise the ‘A. murrayana group’, fide B.R.Maslin, Nuytsia 10: 198 (1995). This group of species is not far removed from the ‘A. victoriae ’ and ‘A. juncifolia ’ groups. Some forms may resemble A. dietrichiana .

Aboriginal use of A. murrayana in central Australia is provided by P.Latz, Bushfires & Bushtucker 110 (1995).

(B.R.Maslin)

 

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