Source: Australian Plant Image Index (a.31394).

ANBG © M. Fagg, 1967

Source: Australian Plant Image Index (dig.38550).

ANBG © M. Fagg, 2015

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

B.R. Maslin

Source: Australian Plant Image Index (dig.38558).

ANBG © M. Fagg, 2015

Source: Australian Plant Image Index (a.3183).

ANBG © M. Fagg, 1977

Source: Australian Plant Image Index (a.31006).

ANBG © M. Fagg, 1983

Source: Australian Plant Image Index (a.31007).

ANBG © M. Fagg, 2003

Source: Australian Plant Image Index (dig.38551).

ANBG © M. Fagg, 2015

Source: Australian Plant Image Index (dig.38552).

ANBG © M. Fagg, 2015

Source: Australian Plant Image Index (dig.38553).

ANBG © M. Fagg, 2015

Source: Australian Plant Image Index (dig.6682).

ANBG © M. Fagg, 2008

Source: Australian Plant Image Index (dig.6683).

ANBG © M. Fagg, 2008

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

B.R. Maslin

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

B.R. Maslin

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

B.R. Maslin

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

See illustration.

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

See illustration.

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

See illustration.

Source: WorldWideWattle ver. 2.
Published at: www.worldwidewattle.com

See illustration.

Acacia continua occurrence map.

Occurrence map generated via Atlas of Living Australia (https://www.ala.org.au).

Common Name

Thorn Wattle, Thorny Wattle

Family

Fabaceae

Distribution

Common in S.A. from Eyre Peninsula and Flinders and Lofty Ranges S to near Adelaide, and scattered localities eastward to near Lake Cargellico, N.S.W.

Description

Openly branching rigid shrub to 2 m high. Branchlets terete, ribbed, glabrous. Phyllodes continuous with branchlets but not forming cauline wings, ascending, straight or ±recurved, often kinked at large gland, ±terete, with lower ones 2–4 cm long, 1.5–2 mm diam. basally and upper ones shorter, tapering to pungent tip, glabrous, with c. 7 distant nerves. Inflorescences simple, 1 or 2 per axil; peduncles 2–6 (–8) mm long, glabrous; basal bracts dark brown and prominent; heads globular, 6–10 mm diam., ±30-flowered, golden; bracteoles widely spathulate, obtuse, dark brown, evident in buds. Flowers 5-merous; sepals united. Pods linear, constricted between and raised on alternate sides over seeds, curved to once-coiled, to 8 cm long, 3–4 mm wide, coriaceous, glabrous. Seeds longitudinal, elliptic, 3–8 mm long, dull brown; aril lateral, clavate.

Habitat

Grows in hard alkaline, calcareous and sandy alkaline soils, in woodland, open scrub and Triodia grassland.

Specimens

S.A.: Miccollo Hill, Gawler Ra., B.J.Conn 1813 (K, MEL, NSW, PERTH, TL); Eyre Peninsula, Mt Gairdner, N.N.Donner 3355 (AD, PERTH); Port Germein Gorge, Southern Flinders Ra., D.J.E.Whibley 2031 (AD, PERTH). N.S.W.: Mootwingee Natl Park, P.E.Conrick 1461 (AD, PERTH).

Notes

The arrangement of inflorescence and peduncular bracts, bracteoles, united sepals and curved to coiled pods suggest this species is nearest the ‘A. pravifolia group’, in spite of the form of the phyllodes which in that group are commonly inequilateral, articulate on the stem and flattened.

FOA Reference

Data derived from Flora of Australia Volumes 11A (2001), 11B (2001) and 12 (1998), products of ABRS, ©Commonwealth of Australia

Author

B.R.Maslin, R.S.Cowan

Minor edits by J.Rogers