Acacia gonoclada F.Muell. J. Proc. Linn. Soc., Bot . 3: 140 (1859)
Shrub or tree to 4 m high. Bark smooth, red-brown or grey. Branchlets angular, olive-green or brown, the 4 angles raised, yellowish. Phyllodes narrowly elliptic or oblanceolate, flat, 5–13.5 cm long, 8–33 mm wide, narrowed and curved upwards near base, with 2 or 3 conspicuous main veins tending to be confluent near lower margin at base, the minor veins 4–6 per mm, longitudinal, rarely anastomosing; gland 1, prominent, circular, basal. Spikes single or paired, or often in terminal panicles owing to upper phyllode loss, 1–5 cm long, bright yellow. Flowers 5-merous; calyx 0.8–1.2 mm long, dissected to 1/3 to 1/2, densely pubescent, persistent after fruit initiation; corolla 1.5–2 mm long, dissected to 1/4–1/2, glabrous; ovary densely pubescent. Pods clustered in upper axils, linear, flat, slightly constricted between seeds, 2–6 cm long, tapering towards base and apex, thin, glabrous, resinous. Seeds longitudinal, oblong- or broadly elliptic, 3–4 mm long, black; areole open, narrow.
Widespread in tropical Australia in W.A., N.T. and Qld, N of 21S. Grows usually in shallow stony soils in N.T. and Qld, but on more loamy soils S of Charters Towers, Qld. Flowers May–July.
Allied to A. laccata . Putative rare hybrids between A. gonoclada and A. elachantha (glabrous variant) are noted in M.W.McDonald & B.R.Maslin, Aust. Syst. Bot. 10: 318 (1997); also putatively hybridises with A. thomsonii in N.T.
Details of ecology, utilisation, etc. of A. gonoclada are given in L.A.J.Thomson & N.Hall, Austral. Acacias no. 23, CSIRO Division of Forestry & Forest Products (1989).
Type of accepted name
Victoria R., [N.T.], Feb. 1856?, F.Mueller 9 ; holo: MEL; iso: K, NSW.
Racosperma gonocladum (F.Muell.) Pedley, Austrobaileya 2: 349 (1987). Type: as for accepted name.
[ Acacia leptostachya auct. non Benth.: J.H.Maiden, Proc. Roy. Soc. Queensland 30: 41 (1918), fide L.Pedley, Proc. Roy. Soc. Queensland 74: 55 (1964)]
F.Mueller, Iconogr. Austral. Acacia dec. 11 [pl. 2] (1888); M.Simmons, Acacias Australia 1: 275 (1987).
W.A.: Edgar Ra., K.F.Kenneally 5485 (BRI, PERTH). N.T.: c. 1 mile [1.6 km] W [of] Jump Up area, Murranji S.R.***in full?***, 7 Sept. 1957, G.Chippendale (NSW, NT); between Brunette Downs & Anthony Lagoon, 12 June 1971, B.Maloney (NSW, NT). Qld: 7.5 miles [12.1 km] N of Charters Towers turnoff on Hughenden/Mt Garnet road, P.Hind 1049 & C.K.Ingram (BRI, CANB, NSW, PERTH, TL); Mount Isa–Camooweal road, 80 miles [130 km] from Mount Isa, 11 June 1971, B.Maloney (NSW, PERTH).