Acacia dietrichiana F.Muell., S. Sci. Rec. 2(7): 149 (1882)
Sparingly branched shrub or tree to 6 m high. Branchlets slender, lenticellular, dark reddish brown, glabrous, viscid (vernicose when dry). Phyllodes ascending to erect, narrowly linear, straight to shallowly curved, 13–23 cm long, 1.5–3.5 mm wide, acute to obtuse-mucronate, with callose, brown mucro, thin, not rigid, sparsely and obscurely longitudinally wrinkled when dry, glabrous, 1-nerved; gland 0–6 mm above pulvinus. Inflorescences 1–3 per axil, normally comprising 1-headed racemes with a minute axis c. 1 mm long; peduncles 8–11 mm long, glabrous, sometimes viscid; basal bract persistent; heads globular, 20–30-flowered, bright golden. Flowers 5-merous; sepals free. Pods submoniliform, to c. 6 cm long, 4–5 mm wide, thinly coriaceous. Seeds longitudinal, oblong, c. 4 mm long, exarillate.
Widespread but uncommon in central Qld from E of Tambo N along the Great Divide to near Lucy Ck (W of Ingham). Grows in shallow soils derived from sandstone, in woodland.
Most closely related to A. juncifolia . Forms of A. murrayana with long, linear phyllodes differ by their glandular phyllode apices, longer racemes and broader pods. Superficially similar to A. dentifera from W.A.
Type of accepted name
Lake Elphinstone, Qld, A.Dietrich 1710; holo: MEL; iso: HBG, P, PR n.v. , fide L.Pedley, Austrobaileya 1: 260 (1980); ?iso: AD, K, LUND, MEL, MO (all without collecting number), FI, MEL, NSW (all labelled no. 1715), CANB, NSW (both labelled no. 5).
Racosperma dietrichianum (F.Muell.) Pedley, Austrobaileya 2: 347 (1987). Type: as for accepted name.
Acacia juncifolia var. planifolia Benth., Fl. Austral. 2: 339 (1864). Type: Subtropical New Holland, Camp 29 [i.e. vicinity of the headwaters of the Barcoo R.], Qld, Sept. 1846, T.L.Mitchell ‘496’ ; holo: K (herb. Bentham specimen); iso: K (herb. Hooker specimen, without number)
F. von Mueller, Iconogr. Austral. Acacia dec. 3 (1887).
Qld: 21.75 km from Torrens Creek towards Pentland, N.Hall H83/48 (NSW, PERTH); Blackdown Tableland, 19.3 km SSE of Bluff, R.W.Johnson 1052 (BRI).