Acacia williamsiana J.T.Hunter, J. Roy. Soc. W. Austral. 80: 235–237 (1997)
Tall shrub or small tree 2–8 m high. Branchlets angular, glabrous, +/- pruinose. Phyllodes dimorphic: on young plants broadly elliptic to obovate, 1.3–7.5 cm long, 13–25 mm wide, widely spreading; on mature plants oblanceolate, narrowly elliptic or linear, acute, 4.5–12 cm long, 4–11 mm wide, erect, pale green to subglaucous, glabrous, rarely hairy and glabrescent, longitudinal nerves numerous and closely parallel, 3–5 more prominent than the rest, anastomoses absent. Inflorescences simple or rudimentary racemes to 1 mm long; peduncles 0–1 mm long, glabrous or rarely hairy at base; spikes pale yellow; ovary hairy. Flowers 5 –merous; sepals united, woolly to tomentose (more so basally). Pods linear or sub-moniliform, 3.5–9 cm long, 2–4 mm wide, +/- curved, wrinkled, glabrous, +/- glaucescent. Seeds longitudinal, ellipsoid, dark brown to black, arillate.
Occurs within a 100 km radius of Glen Innes, west to Ashford and north to Torrington in northern N.S.W. and near Ballandean in southern Qld. Grows in woodland and low shrubland on and around base of granite outcrops. It has a disjunct distribution and is known only from a few localities in restricted habitats.
Perhaps related to A. blakei subsp. diphylla and A. burrowii . See A. cheelii.
Type of accepted name
North Western Slopes: on the banks of Kings Plains Ck, in Kings Plains National Park, NW of Glen Innes, N.S.W., J.T.Hunter 4112 & P.J.Clarke ; holo: NSW; iso: AD, BRI, HO, MEL, NE, PERTH.
Representative collections
N.S.W.: MacIntyre Falls Fauna and Fauna Reserve, R.G.Coveny 14434 & R.O.Makinson (AD, B, BRI, BM, CANB, K, MEL, NSW, PERTH, US, Z); Severn R. Nature Reserve, NE of Glen Innes, near Pindari Dam, J.T.Hunter 3112 (NE). Qld: Ballandean, nr Stanthorpe, 10 Oct. 1966, J.Harslett s.n. (BRI)
(BRM)
This species was not included in the Fl. Australia treatment of Acacia ; the above account is based on the original description.
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.
