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Acacia lineolata

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Acacia lineolata Benth., Linnaea 26: 626 (1855)

Dwarf Myall

Dense, rounded or obconic shrub 0.5–1.7 m high. Branchlets glabrous or appressed-puberulous. Phyllodes patent to ascending, linear to oblanceolate-linear to oblong-elliptic, straight to curved, occasionally terete, mostly 2–6.5 cm long, usually 2–5 mm wide, acute to short-acuminate, coarsely pungent or innocuous, coriaceous to rigid-coriaceous, glabrous or appressed-puberulous and glabrescent, with numerous closely parallel, yellow nerves, the internerve spaces darker coloured and with evident stomata; gland(s) 1–3, inconspicuous, (3– ) 5–21 mm above pulvinus. Inflorescences simple, 2 per axil; peduncles 2–11 mm long, glabrous to appressed-puberulous; heads globular or slightly obloid, 4–6 mm diam., 18–35-flowered, golden; bracteoles linear to fusiform. Flowers 5-merous; sepals free or shortly united basally. Pods linear, straight to shallowly curved, to 10 cm long, 2–3 mm wide, thinly coriaceous or chartaceous, appressed-puberulous or glabrous. Seeds longitudinal, elliptic to oblong, 3–4 mm long, glossy, brown or brown-black; aril terminal, bright yellow.

Occurs in south-western W.A. from Yuna (c. 35 km due E of Northampton) to Pingrup.

A member of the ‘ A. enervia group’.

Phyllodes 1–3 (–4) mm wide, tips straight to shallowly curved or uncinate and innocuous to coarsely (rarely sharply) pungent; peduncles 2–6 mm long

subsp. lineolata

Phyllodes (3–) 4–8 mm wide, tips straight and sharply to coarsely pungent; peduncles 5–9 (–11) mm long

subsp. multilineata

 

Acacia lineolata Benth. subsp. lineolata

Phyllodes linear to linear-oblanceolate, normally straight to shallowly incurved, often sigmoidally, occasionally terete, (2–) 3–7 (-10) cm long, (1–) 2–3 (–4) mm wide, acute to shortly acuminate with straight to shallowly curved or uncinate, innocuous to coarsely (rarely sharply) pungent points. Peduncles 2–6 mm long. Seeds glossy, brown-black.

Occurs from Kalbarri Natl Park (c. 100 km due N of Geraldton) SE to Pingrup (c. 50 km due N of Ongerup) in south-western W.A. Grows in sandy or stony, often saline, loam in association with Casuarina spp, Holosarcia and eucalypts.

A variant in the north-central part of the range has very narrow phyllodes (1–1.5 mm wide, 3.5–7 cm long) which vary from flat to subterete e.g. 14 km E of Kulja towards Beacon, B.R.Maslin 3975 (CANB, K, MEL, NSW, PERTH).

Superficially similar to A. ancistrophylla var. lissophylla . Can easily be confused with A. enervia subsp. explicata when the two are sympatric.

Type of accepted name

Swan R. [W.A.], 1848, J.Drummond 4: 13 ; lecto: K (herb. Hooker), fide R.S.Cowan & B.R.Maslin, Nuytsia 10: 235 (1995); isolecto: G, K (herb. Bentham), OXF, P, PERTH (Fragment ex K), TCD; Swan R. [W.A.], J.Drummond 4: 12 ; paralecto: K (herb. Hooker and herb. Bentham, 2 sheets), ?NSW; it is not known to what species this name applies, but it is not A. lineolata , s ensu lectotypico .

Representative collections

W.A.: Pingrup, W.E.Blackall 2987 (PERTH); 14.1 km from junction of Gorge Rd with Ajana- Kalbarri road, Kalbarri Natl Park, R.S.Cowan A821 & R.A.Cowan (CANB, K, MEL, NSW, NY, PERTH, US); Wilroy, J.Galbraith 347 (PERTH); 32 km W of Kununoppin towards Wyalkatchem, B.R.Maslin 3400 (CANB, K, NSW, P, PERTH).

 

Acacia lineolata subsp. multilineata (W.Fitzg.) R.S.Cowan & Maslin, Nuytsia 10: 236 (1995)

Phyllodes linear- or oblong-oblanceolate to narrowly elliptic, normally straight to shallowly or strongly incurved, (2–) 3–7 cm long, (3–) 4–8 mm wide, acute to subulate-acuminate with straight, sharply to coarsely pungent points. Peduncles 5–9 (–11) mm long. Seeds glossy, brown.

 

Known only from a few localities near Mullewa, W.A.; the type collection was made in the vicinity of Arrino which is considerably south and west of most of the other collection localities. Grows on sandplains and in rocky clay.

Closely resembling A. patagiata and could be confused with A. unguicula .

Type of accepted name

Arrino, W.A., Sept. 1903, W.V.Fitzgerald s.n. ; lecto: NSW216915 (left-hand specimen on sheet), fide B.R.Maslin & R.S.Cowan, Nuytsia 9: 391 (1994); isolecto: NSW216915 (right-hand specimen), PERTH00765791, 00765805 & 00765813.

Synonymy

Acacia multilineata W.Fitzg., J. Western Australia Nat. Hist. Soc. 1: 13 (1904). Type: as for accepted name.

Representative collections

W.A.: E of Yuna on Tenindewa road, A.M.Ashby 4515 (CANB, PERTH); 12.8 km E of Mullewa on the road to Yalgoo, B.R.Maslin 3637 (K, MEL, PERTH); 13 km E of Mullewa on the road to Yalgoo, B.R.Maslin 5077 (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