Acacia adsurgens Maiden & Blakely, J. Roy. Soc. Western Australia 13: 28, pl. 20, figs 6–10 (1928)
Shrub or small tree to 4 m high. Bark smooth then splitting or fibrous, grey-brown, reddish beneath. Branchlets angular to flattened towards apices, light brown or reddish, glabrous, viscid. Phyllodes linear, straight or upwardly curved, flat, 6–18 (–20) cm long, 2–4.5 mm wide, coriaceous, glabrous, resinous particularly when young, the midvein subprominent, with c. 8 obscure minor veins per mm; gland 1, basal, swollen, to 3 mm above pulvinus. Peduncles 5–15 mm long. Spikes 0.8–2.5 cm long, densely flowered, yellow. Flowers 5-merous; calyx 0.8–1.25 mm long, dissected by less than 1/10, with densely scurfy, viscid lobes, the midrib commonly evident; corolla 1.2–1.8 mm long, dissected to c. 1/3 its length, glabrous; ovary glabrous or apex very finely tomentose. Pods linear, slightly raised over and constricted between seeds, straight or slightly curved, 3.5–12 cm long, 2–3.5 mm wide, coriaceous, light brown; margins not prominent. Seeds longitudinal, narrowly oblong to oblong-elliptic, dorso-ventrally flattened, 3.5–4.5 mm long, dark brown; pleurogram fine, surrounded by pale halo; areole open, pale.
Widespread in the W.A., N.T. and Qld between 18S and 26S, extending to c. 117E in the west near Roebourne, and E to central Qld. Also occurs in far NE S.A., in the Lake Eyre Region. Grows in reddish sandy and gravelly soils, on flat plains and hillsides, commonly in spinifex grassland communities. Flowers May-Sept., sometimes as early as Feb.
Details of ecology, utilisation, etc. of A. adsurgens are given in L.A.J.Thomson & N.Hall, Austral. Acacias no. 22, CSIRO Division of Forestry & Forest Products (1989). Details of fire impacts on, and Aboriginal use of, A. adsurgens are given by P.Latz, Bushfires & Bushtucker 86 (1995).
Type of accepted name
35 miles [56 km] NE of Camp 2, N.T., 7 June 1911, G.F.Hill 261 ; lecto: NSW, fide P.G.Kodela, Telopea 7: 419 (1998); isolecto: MEL n.v. ; 40 miles [64 km] W of Camp 4, Lander Ck, N.T., 21 June 1911, G.F.Hill 360 ; paralecto: K, MEL n.v ., NSW.
Synonymy
Racosperma adsurgens (Maiden & Blakely) Pedley, Austrobaileya 2: 344 (1987). Type: as for accepted name.
Illustration
J.H.Maiden & W.F.Blakely, loc. cit.
Representative collections
W.A.: c. 80 km NW of Wittenoom on the road to Roebourne, B.R.Maslin 5570 (NSW, PERTH). N.T.: 12 miles [19.2 km] N of Wauchope, N.Forde 698 (NSW, NT); 30 miles [48 km] E [of] Connors Well, N.Forde 950 (NSW, DNA); 26 miles [41.6 km] W of Avon Downs Stn, on the Barkly Hwy, I.V.Newman 575 (NSW). Qld: Brenda Bore, Oban Stn, c. 62 miles [99.8 km] SW of Mount Isa, S.L.Everist 3372 (BRI). S.A.: Innaminka Regional Reserve; Innaminka -Cordillo Rd. c. 40 km N of Candradecka Dam, R.W.Purdie 4547 (AD, ex CANB).
(NSW)
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.
