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Acacia denticulosa

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Acacia denticulosa F.Muell., Fragm . 10: 32 (1876)

Sandpaper Wattle

Open, spindly shrub 1- 4 m high. Branchlets resinous at first, coarsely verrucose-scabrous, the tips of hairs soon eroded leaving tubercle-bases. Phyllodes spreading, inequilaterally widely elliptic to ovate, 5- 9 cm long, 3.5- 7.5 cm wide, strongly undulate and with irregularly denticulate margins, acute, mucronate, thickly coriaceous, dark green, prominently 3- or 4-nerved with a prominent, coarse reticulum inbetween, the venation verrucose-scabrous. Inflorescences simple; peduncles 3- 7 mm long, scabrous, resinous; spikes 25- 80 mm long, 6- 8 mm diam., dense, golden. Flowers 4-merous; sepals free. Pods linear, strongly raised over seeds, straight to slightly curved, to 7.5 cm long, 3- 4.5 mm wide, glabrous. Seeds longitudinal, elliptic to broadly elliptic, 3.5- 4 mm long, glossy, brown-black; aril terminal.

Scattered populations from E of Mt Churchman S to near Nungarin and W at Wongan Hills, W.A. Gazetted a rare species in W.A. Grows in sand, loam, silt and clay, on and around granite hills and outcrops, rarely on sandplains.

Affinities unknown.

Type of accepted name

Near Mt Churchman, W.A., [J.]Young ; holo: MEL100525; iso: NSW, PERTH (Fragment ex MEL).

Illustrations

F. von Mueller, Iconogr. Austral. Acacia dec. 12 [pl. 2] (1888); W.R.Elliot & D.L.Jones, Encycl. Austral. Pl. 2: 41 (1981); M.Simmons, Acacias Australia 2: 283 & pl. 5 (1988).

Representative collections

W.A.: Wongan Hills area [precise locality withheld for conservation reasons], B.R.Maslin 4544 (CANB, K, PERTH); Barbalin, K.Newbey 2875 (PERTH); 40 km E of Mt Churchman, Oct. 1983, R.Paynter (PERTH); near Nungarin, 1 Sept. 1919, E.Simpson (PERTH).

(BRM & RSC)

WATTLE Acacias of Australia CD-ROM graphic

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 Conservation and Land Management, 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.

Page last updated: Wednesday 29 May 2013