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Acacia daviesioides

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Acacia daviesioides C.A.Gardner, J. & Proc. Roy. Soc. W. Australia 27: 173 (1942)

Much-branched, intricate, glabrous shrub 0.3–1 m high. Branches straight or flexuose, terete, sometimes angled, striate, glaucous to subglaucous, sometimes green. Stipules linear to linear-triangular, 1–3 mm long. Phyllodes continuous with branchlets, sometimes decurrent and forming narrow wings at base of stems or on regrowth plants; free portion of phyllodes shallowly recurved to straight, flat to pentagonal or terete, 2–10 (- 20) mm long, narrowed towards apex, spinose, rigid, 5-nerved; main nerves prominent; adaxial margin 2-nerved; gland 1–2 mm above base. Inflorescences very reduced 1–3-headed racemes, sometimes growing out at anthesis; peduncles 3–8 mm long, recurved from base in fruit; heads globular, 15–24-flowered, light golden. Flowers 5-merous, a few 4-merous; sepals shallowly or deeply united. Pods linear, straight-edged or a little constricted between seeds, alternately raised over seeds, to 8 cm long, 3–5 mm wide, coriaceous-crustaceous, pruinose when young. Seeds longitudinal, broadly oblong to oblong-elliptic, 2.5–3 mm long; aril large.

Disjunct, occurring from near Mingenew SE to Ballidu- Kalannie, with outliers at Jingemarra Stn (c. 200 km NE of Mingenew) and near Mt Jackson (c. 200 km E of Kalannie), south-western W.A. Grows in sand, loam and sandy clay, often with gravel, in heath, open scrub and shrubland.

Some specimens, including the type, have flexuose branches with tuberculate ribs. Otherwise the branches are straight and the ribs smooth.

Specimens with angled branchlets due to decurrent phyllodes may resemble short phyllode forms of A. trigonophylla which are most easily distinguished by their green stems, non-racemose inflorescences and submoniliform pods.

Related to A. cerastes which is distinguished by its tortuous, green or brown branchlets and rudimentary phyllodes, see B.R.Maslin, Nuytsia 10: 173 (1995), for further discussion.

Type of accepted name

Between Latham and Buntine, W.A., Sept. 1931, W.E.Blackall 772 ; holo: PERTH; iso: K, NSW, PERTH.

Illustrations

M.Simmons, Acacias Australia 25 & pl. 39 (1981).

Representative collections

W.A.: near Kalannie on Dalwallinu road, A.M.Ashby 4245 (PERTH); halfway between Mingenew and Morawa, A.M.Ashby 5200 (NSW, PERTH); 4 km S of Jingemarra HS, R.J.Cranfield 6031 (PERTH); 8.8 km S of Wubin towards Dalwallinu, B.R.Maslin 3528 (CANB, MEL, NY, PERTH); N of Mt Jackson, M.H.Simmons 1236 (PERTH).

(BRM)

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