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Acacia aciphylla

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Acacia aciphylla Benth., Linnaea 26: 627 (1855)

Dense shrub to 1.5 m high. Branchlets glabrous. Phyllodes sessile, decurrent on branchlets, erect, straight, terete to slightly rhombic in section, 6– 12 (– 17) cm long, 1– 1.5 mm diam., long-tapering pungent, rigid, glabrous except tomentulose adaxially at extreme base, closely striate-nerved with nerves at the 4 angles slightly broader than the rest. Inflorescences simple, commonly 2 per axil; peduncles 2– 3 mm long, glabrous or puberulous basally; heads obloid, 6– 9 mm long, 6 mm diam., densely flowered, golden. Flowers 5-merous; sepals 2/3– 3/4-united. Pods linear, slightly raised over and constricted between seeds, straight, to 9 cm long, 2– 2.5 mm wide, coriaceous to crustaceous, longitudinally nerved, glabrous. Seeds longitudinal, oblong to broadly elliptic, 2.5– 3 mm long, glossy, mottled brown; aril translucent yellow.

Discontinuous, occurring in Kalbarri Natl Park, between Mullewa and Morawa and near Bindi Bindi, south-western W.A. Usually grows in loam and laterite in mixed scrub.

Formerly confused with A. sibina which has pulvinate phyllodes, longer spikes and larger pods and seeds.

Type of accepted name

Swan R., W.A., J.Drummond 4: 14 ; lecto: K, fide B.R.Maslin, Nuytsia 2: 145 (1977); isolecto: OXF, P, K, MEL, NSW, PERTH.

Illustrations

B.R.Maslin, op. cit ., 147, fig. 1.

Representative collections

W.A.: Junga Dam, Kalbarri, D. & B.Bellairs 1633 (CANB, PERTH); 50 km from Mullewa towards Morawa, B.R.Maslin 3358 (CANB, K, NSW, NY, PERTH); 4 km S of Bindi Bindi towards Calingiri, B.R.Maslin 5363 (PERTH).

(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 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.

Page last updated: Tuesday 11 September 2018