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Acacia conjunctifolia

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Acacia conjunctifolia F.Muell., Fragm . 11: 68 (1879)

Glabrous, resinous shrub to 2 m high. Branchlets angular to almost flattened towards apices, brown to dark brown; ridges prominent, resin-crenulated. Phyllodes single or in clusters of 2–4, linear to narrowly elliptic or narrowly oblanceolate, flat, straight to slightly curved, 0.8–2.7 cm long, 1–3.5 mm wide, with inconspicuous margins, with prominent midnerve and 1 or 2 inconspicuous longitudinal nerves often not reaching apex; glands 0–3, marginal. Spikes 0.7–3 cm long, pale yellow. Flowers 5-merous; sepals free, 0.3–0.6 mm long, glabrous; corolla 0.8–1.5 mm long, dissected to 1/3–1/2, glabrous; ovary slightly scurfy. Pods erect, linear, broadest above middle and tapered towards base, straight-sided, straight to slightly curved, flat, 3–7 cm long, 3.5–7 mm wide, thick, obliquely–longitudinally striate, opening elastically from apex; margins thickened, often narrowly winged. Seeds oblique, oblong- or narrowly oblong-elliptic, 3–6 mm long, dark brown; areole oblong-elliptic, open, with a pale halo around pleurogram; funicle-aril narrowly conical.

Occurs in tropical Australia, in the Victoria R. area and the Gulf of Carpentaria region, N.T., also in extreme north-western Queensland. Grows in stony, sandy soils often on laterite or quartzite, in mixed eucalypt woodland or scrubby open forest. Flowers May–Sept.

The clustered arrangement of the phyllodes is unusual in sect. Juliflorae . Acacia amentifera is probably a close relative. See A. tenuispica for discussion of relationships.

Type of accepted name

Victoria R., [N.T.], B.Gulliver ; holo: MEL.

Synonymy

Racosperma conjunctifolium (F.Muell.) Pedley, Austrobaileya 2: 347 (1987).

Illustration

F.Mueller, Iconogr. Austral. Acacia dec. 11 [pl. 7] (1888).

Representative collections

N.T.: 50 miles [80 km] SW [of] Willeroo HS, 9 May 1960, G.Chippendale (NSW, NT, PERTH); 47.2 km W of Top Springs turnoff, on Victoria Hwy, M.D.Tindale 10113, P.Munns & R.Turvey (BRI, DNA, K, MEL, NSW, PERTH). Qld: 16 km W [of] Westmoreland HS, J.R.Maconochie 2037 (BRI, CANB, DNA, NSW, NT, PERTH); 9 miles [14.4 km] W of Westmoreland Stn, R.A.Perry 1341 (BRI, CANB, MEL, NSW, PERTH).

(NSW)

 

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