Acacia hippuroides Heward ex Benth., London J. Bot . 1: 344 (1842)
Shrub to 1 m high. Stems velvety-tomentose with yellow hairs. Stipules 1–2 mm long. Phyllodes 12–15 per whorl, spreading and incurved to ascending, slightly flattened and sulcate on upper surface, 12–20 mm long, shortly mucronate, pubescent. Peduncles 15–30 mm long. Heads 30–40-flowered. Flowers 5-merous; calyx 0.4–0.6 mm long, irregularly lobed for 1/4–3/4 of its length or rarely to base, glabrous except long hairs at base; corolla lobes smooth, hairy near apex. Pods sessile, broadly linear, flat, curved, c. 25 mm long and 10 mm wide, crustaceous-coriaceous, glabrous or with dirty yellow hairs, viscid. Seeds transverse, c. 4 mm long; pleurogram open.
Occurs in the Kimberley region, W.A., on the Dampier Penin. and nearby areas, on the Buccaneer and Bonaparte Archipelagoes and S to Thangoo Stn. Grows in deep red sand and sandy loam, often over laterite, sandstone or quartzite, in woodland and shrubland, and in seepage areas.
A distinctive species, with slender stems and phyllodes and long yellow hairs. The smooth corolla suggests relationships with A. spondylophylla and A. longipedunculata but its range, peculiar indumentum, and extremely short calyx relative to the corolla set it apart from these species. Possibly hybridises with A. adoxa var. subglabra on the Dampier Penin. Acacia perryi has sometimes been confused with A. hippuroides .
Type of accepted name
Osborne Harbour near entrance to King Sound, W.A., Wickham ; n.v .
L.Pedley, Contr. Queensland Herb . 11: 3, fig. 1h (1972).
W.A.: Thangoo Stn, J.S.Beard 4078 (PERTH); c. 13 km S of James Price Pt, R.C.Carolin 7503 (NSW); Gibbings Is., Buccaneer Archipelago, K.F.Kenneally 8417 (PERTH); c. 32 km WSW of Beagle Bay, M.Lazarides 6558 (CANB, PERTH); 14 km from Kimbolton Stn HS towards Derby, I.R.Telford 6411 & G.Butler (BRI, CANB, DNA, MO, NSW, PERTH).