Acacia arrecta Maslin, Nutysia 4: 73; 74, fig. 2 & 100, fig. 10 (1982)
Spreading, resinous-viscid shrub or tree to 2 m high. Bark smooth except at extreme base, grey. Branchlets terete, with crenulated resinous ridges distally. Young shoots resinous-viscid. Phyllodes curved at base to become ascending, terete, 1.5–4.3 cm long, 0.7–1.2 mm wide, glabrous, with c. 8 obvious to obscure submerged veins; gland 1, obscure, basal. Inflorescences simple, axillary, bright yellow. Flower-heads globular, dense, 7–10 mm diam., 30–45-flowered, resinous. Flowers 5-merous; calyx 1–1.3 mm long, dissected to 1/6–1/4, glabrous; corolla 2–2.5 mm long, dissected to c. 1/3, glabrous, viscid; ovary glabrous. Pods rigidly erect, linear-oblanceolate, straight, subterete to compressed, 3.5–5.5 cm long, woody, brown, longitudinally veined, glabrous, resinous, opening elastically from apex, the valves curling. Seeds oblique, elliptic, 2.8–4 mm long, brown with slightly paler, open areole; pleurogram with pale halo; funicle-aril straight, conical.
Occurs in north-western W.A., N of the Hamersley Ra. from Millstream (2135’S, 11704’E) and W of 122E, extending S to the northern Hamersley Ra. Appears to favour low rocky hills or stony flats, in spinifex dominated shrub-steppe. Flowers Dec.–Aug.
Closely allied to A. arida and A. orthocarpa which have spicate inflorescences instead of globular flower-heads as in A. arrecta .
Type of accepted name
11 km E of Wittenoom on the road to Port Headland, W.A., 12 July 1980, B.R.Maslin 4644 ; holo: PERTH n.v .; iso: CANB n.v ., K n.v ., MEL n.v .
Illustrations
B.R.Maslin, op. cit. 74, fig. 2.
Representative collections
W.A.: Creek 3 at road, southern tributary of Fortescue [R.], 30 Jan. 1975 R.F.Black (NSW, PERTH); 13 km E of Dampier–Tom Price railway, on road to Wittenoom, B.R.Maslin 5567 (NSW, PERTH); ‘Palm Springs’ (tributary of Fortescue R.), 11 km W of Millstream Stn, A.Rodd 2809 (K, NSW, PERTH).
(NSW)
The information presented here originally appeared on the WATTLE CD-ROM which was jointly published by the Australian Biological Resources Study, Canberra, and the Department of Parks and Wildlife, Perth; it was produced by CSIRO Publishing from where it is available for purchase. The WATTLE custodians are thanked for allowing us to post this information here.
