Acacias of Australia

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Acacia heteroneura var. prolixa R.S.Cowan & Maslin




Scattered from Wubin E to near Wiluna and Laverton, southern W.A.


Phyllodes angular-rhombic in section, sometimes ±flat, 6-13 (-18) cm long, 1-1.5 mm wide, sericeous generally (especially when young) or only between nerves; nerve at apex of each angle clearly wider than the 3 intervening fine secondary nerves. Peduncles commonly solitary, 5-8 mm long, sericeous with few obscure light brown resin-hairs intermixed; flower-heads widely ellipsoid to obloid, 8-9 mm long, 7-8 mm diam. Pods (few seen) to 10.5 cm long, 2.5 mm wide, tapered to stipe; margins about equalling valve width. Seeds (few seen) 4.5-5.5 mm long, tan mottled yellow.


Northern populations grow in red sand in shrubland with Spinifex (Triodia sp.), and southern populations grow in sand over laterite in shrubland.


W.A.: 35.4 km NE of Laverton, A.S.George 2821 (PERTH); 0.3 km N of Wubin, N.Hoyle 338 (PERTH); 106 km N of Sandstone towards Wiluna, R.D.Royce 10386 (CANB, K, PERTH).


Most closely related to var. jutsonii which normally has shorter phyllodes and globular to widely ellipsoid flower-heads; variety prolixa occurs to the north of the geographic range of var. jutsonii.

FOA Reference

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