Acacia lineata A.Cunn. ex G.Don, Gen. Hist . 2: 403 (1832)
Streaked Wattle , Narrow Lined-leaved Acacia
Bushy, spreading shrub to 2 m high. Branchlets terete, often viscid, with indumentum variable and sparse to dense. Phyllodes somewhat crowded, ascending to erect, linear, 9–17 mm long, 1–2.5 mm wide, often obliquely mucronate, sometimes subuncinate, glabrous to hairy; abaxial margin resinous; midrib resinous, close to adaxial margin and occasionally confluent with it near the apex; gland not prominent, normally 1–2 mm above pulvinus. Inflorescences simple, 1 or 2 per axil; peduncles 5–10 mm long, slender, normally glabrous; basal bract persistent; heads prolific, globular, 10–16-flowered, golden. Flowers 5-merous; calyx irregularly united, the lobes sometimes free. Pods curved to irregularly undulate or twisted, to 5 cm long, 2–4 mm wide, firmly chartaceous to thinly coriaceous, glabrous and viscid, sometimes glandular-hairy. Seeds longitudinal, oblong, 3–5 mm long, slightly shiny, brown; aril terminal.
Scattered from Eyre Penin., near Cowell, S.A., through NW Vic. and NSW to near Carnarvon Ra., Qld. Grows in a variety of habitats but often in mallee communities.
J.H.Maiden, J. & Proc. Roy. Soc. New South Wales 49: 496- 499 (1916), discussed variation within A. lineata. He recognised 5 Groups which ‘run into each other a good deal’; Group 1 was later described as A. centrinervia . The remaining four Groups are here treated as comprising A. lineata . Future studies may reveal a basis for dividing the complex variation patterns into discrete taxa; indumentum characters may prove useful in discriminating taxa. The status of A. centrinervia should be reassessed in the light of such studies.
G.Bentham, Fl. Austral . 2: 354 (1864), erroneously treated A. imbricata as synonymous with A. lineata . This species is easily distinguished from A. lineata by its angled, glabrous, non-viscid branchlets and gland-bearing phyllode apices.
Related to A. flexifolia . May superficially resemble A. conferta or A. tindaleae in phyllode shape and size but the relationship is not close. These two non-viscid species together have pods 8–15 mm wide, transverse seeds, peduncles ebracteate at base, 20–38-flowered heads, and obscure or absent phyllode midribs.
Type of accepted name
Barren country E and W of Wellington Valley, N.S.W., A.Cunningham s.n .; iso: K, fide L.Pedley, Austrobaileya 1: 253 (1980).
Synonymy
Racosperma lineatum (A.Cunn. ex G.Don) Pedley, Austrobaileya 2: 351 (1987). Type: as for accepted name.
Acacia runciformis A.Cunn. ex G.Don, Gen. His t. 2: 404 (1832). Type: Cugeegong [= Cudgegong] R., N.S.W., June 1823, A.Cunningham 32 ; syn: K; Hittons Plains, N.S.W., May 1825, A. Cunningham 110 ; syn: K, fide L.Pedley, loc. cit.
Acacia dasyphylla A.Cunn. ex Benth., London J. Bot. 1: 359 (1842). Type: Lachlan R., N.S.W., May 1817, A.Cunningham 411 ; holo: K; iso: BM, K.
Illustrations
W.J.Hooker, Bot. Mag . t. 3346 (1834); L.F.Costermans, Native Trees & Shrubs SE Australia 312 (1981); G.M.Cunningham et al. , Pl. W New South Wales 365 (1981); M.Simmons, Acacias Australia 2: 89 (1988); T.Tame, Acacias SE Australia 111, fig. 111, pl. 111 (1992); D.J.E.Whibley & D.E.Symon, Acacias S. Australia 2nd edn, 61 (1992).
Representative collections
S.A.: road from Cowell to Mangalo, D.N.Kraehenbuehl 5046 (AD); c. 8 km NE of Paskeville on the Northern Yorke Penin., B.Copley 3050 (PERTH). Qld: Carnarvon [Stn], G.L.Walsh 239 (BRI). N.S.W.: Parkes, Oct. 1906, J.L.Boorman (NSW). Vic.: Wyperfeld Natl Park, A.C.Beauglehole 28287 (MEL).
(BRM)
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.
