Acacias of Australia

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Acacia tenuinervis Pedley




Restricted to a few localities in south-eastern Qld other than those cited, e.g. near Boondooma and Impey Pastoral Holding.


Shrub or tree to 9 m high, often with root suckers. Bark furrowed, black or grey-brown. Branchlets slightly angular towards apices, becoming terete, orange-red or red-brown, ±pruinose, velutinous when young, later glabrous and scurfy. Phyllodes very narrowly elliptic to narrowly elliptic, straight to falcate, 6.5–12.5 cm long, (10–) 15–30 mm wide (juvenile phyllodes tomentose and 7–9 cm long by c. 2 cm wide), glabrous or slightly scurfy, with 3 or 5 slightly prominent free main nerves; minor nerves 6–10 per mm, parallel, not anastomosing; gland 1, large, basal. Inflorescences racemose; raceme axes 2–25 mm long. Spikes 3–5 cm long. Flowers 5- or rarely 4-merous; calyx 0.7–0.8 mm long, truncate or sinuolate, glabrous or almost so; corolla 1.3–1.5 mm long; ovary glabrous. Pods linear, slightly constricted and raised over seeds, 2–11 cm long, 2.5–4 mm wide, chartaceous, scurfy. Seeds longitudinal, oblong-elliptic, 3.5–6 mm long, black; areole open, narrow, elongate.


Flowers Aug.–Sept.


Grows in brigalow scrub or eucalypt woodland, in ironstone gravel.


Qld: c. 15 km by road from Myall Park HS, N.Hall H77/119 (BRI, NSW); 18 km W of Monogorilby, A.N.Rodd 4205 (BRI, CANB, K, MEL, NSW); ‘Myall Park’, Glenmorgan, cult., M.D.Tindale 705 (NSW).


Acacia tenuinervis is a member of the A. cheelii group allied to A. striatifolia from which it differs in the tomentose branchlets and juvenile phyllodes, and the long axillary shoots bearing the lateral inflorescences. It is also related to A. blakei but it has longer, wider phyllodes, shorter pods and tomentose juvenile plants.

FOA Reference

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


Dr M.D.Tindale and Dr P.G.Kodela with the assistance of M.Bedward, S.J.Davies, C.Herscovitch, D.A.Keith and/or D.A.Morrison

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