Acacia tenuinervis Pedley, Austrobaileya 1: 142 (1978)
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, 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, the minor nerves 4–7 per mm, parallel, not anastomosing; gland 1, large, basal. 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, 2–4 mm wide, chartaceous, scurfy. Seeds longitudinal, oblong-elliptic, 3.5–6 mm long, black; areole open, narrow, elongate.
Restricted to a few localities in south-eastern Qld other than those cited, e.g. near Boondooma and Impey Pastoral Holding. Grows in brigalow scrub or eucalypt woodland, in ironstone gravel. Flowers Aug.–Sept.
Allied to A. striatifolia from which it differs in the tomentose branchlets and juvenile phyllodes, and the long axillary shoots bearing the lateral inflorescences. Acacia tenuinervis is also related to A. blakei but it has longer, wider phyllodes, shorter pods and tomentose juvenile plants.
Type of accepted name
Glenmorgan, Qld, Sept. 1961, L.Pedley 862 ; holo: BRI.
Racosperma tenuinerve (Pedley) Pedley, Austrobaileya 2: 356 (1987). Type: as for accepted name.
M.Simmons, Acacias Australia 2: 269 (1988).
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).