Acacia donaldsonii R.S.Cowan & Maslin, Nuytsia 12: 458 (1999)
Binneringie Wattle
Shrub or gnarled tree, to 3 (–5) m high. Branchlets terete, densely puberulous, resinous, scarred by raised stem-projections where phyllodes have fallen. Phyllodes ascending to erect, straight to shallowly incurved, terete, 6–14.5 cm long, 1.5–2.5 mm diam., abruptly subulate-pungent, rigid, sparingly appressed-puberulous, glabrescent, with 4–8 distant, rather obscure main nerves; glands 2, minute. Inflorescences simple, 2 or more per axil; peduncles 5–15 mm long, appressed-puberulous; heads globular, 4–5 mm diam., 30–56-flowered, golden; bracteoles spathulate. Flowers 5-merous; sepals 2/3–3/4-united. Pods moniliform to linear, curved, twisted after dehiscence, to 14 cm long, 6–10 mm wide, coriaceous, glabrous. Seeds longitudinal, elliptic to oblong-elliptic, 6.5–9 mm long, dull, brown; aril clavate to subhemispheric.
Scattered, occurring on Narndee, Windimurra and Weebo Stns, from L. Yindarlgooda S to Norseman and also near Carlisle Lakes, southern W. A. Grows on sandy soil and small dunes close to salt lakes in low open shrubland with Atriplex spp. and Maireana spp., also on limestone and loamy clay.
Very similar to, and easily confused with, A. gilesiana which has glabrous branchlets and peduncles, well-developed racemes, innocuous to coarsely pungent, bluntish phyllodes, peltate bracteoles and non-arillate seeds. May superficially resemble A. kalgoorliensis (which has smaller phyllodes with stomata evident between the more numerous and more obvious nerves) or A. masliniana (which has more slender, finely multistriate phyllodes, shorter peduncles and quite different pods).
Type of accepted name
3 km NE of No. 1 Well, Weebo Stn, W.A., 9 June 1988, R.J.Cranfield 6938 ; holo: PERTH; iso: CANB, K, NY.
Representative collections
W.A.: NE end of L. Cowan near Binneringie HS, M.Donaldson K50 (D) (AD, NSW, PERTH) and K50 (E) (MEL, PERTH); c. 8 km SW of L. Ell, 31 July 1966, J.Lowry (PERTH).
(RSC)
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.
