Acacias of Australia

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Acacia tenuior Maiden




Apparently rare, known from only a few localities in far north-western S.A.


Shrub c. 2 m high. Branchlets terete, rather prominently ribbed, appressed-puberulous, aging glabrous. Phyllodes filiform, straight to slightly incurved, erect, terete to subterete (±quadrangular near base), (6–) 8–14 cm long, 0.8–1 mm diam., acuminate and slightly curved at apex, flexible, antrorsely appressed-puberulous especially near base and apex, aging glabrous, with 8 distant nerves each separated by a deep longitudinal groove. Inflorescences simple, 1 or 2 per axil; peduncles 6–15 mm long, sparsely to densely appressed-puberulous, glabrous in fruit; heads globular, 25–30-flowered; bracteoles spathulate, acute, ±puberulous. Flowers 5-merous; sepals free, linear-spathulate; petals united. Pods linear to narrowly oblong, to 10 cm long, 5–8 mm wide, coriaceous, flat, sparsely appressed-puberulous, aging glabrous. Seeds longitudinal, oblong to elliptic, 2.5–3 mm long; aril white.


S.A.: Mt Woodroffe, 21 Oct. 1994, P.J.Lange et al. (AD, PERTH). N.T.: c. 51 km ENE of Surveyor Generals Corner, T.L.Collins & D.E.Albrecht [TLC] 467 (AD, DNA, NT, PERTH).


Closely related to A. dolichophylla.

FOA Reference

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



Minor edits by B.R.Maslin & J.Reid