Acacias of Australia

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Acacia ancistrocarpa Maiden & Blakely x Acacia citrinoviridis Tindale & Maslin




Known from only a single locality in the Pilbara region of north-western W.A. in the valley of the Fortescue R. between Munjina Roadhouse and Roy Hill Stn.


Obconic, multistemmed shrub 4–6 m high. New shoots silvery sericeous. Branchlets glabrous. Phyllodes linear to narrowly lanceolate elliptic, gradually narrowed to acuminate apices, ±straight, 13–17 cm long, 4–6 (–8) mm wide, glabrous to sparsely appressed hairy; longitudinal nerves numerous, fine and close together, the central nerve slightly more evident than the rest; marginal nerve narrow and yellowish. Inflorescences simple; peduncles 1–2 mm long, ±densely puberulous, the hairs patent or appressed; flowering receptacles densely puberulous with white, patent hairs; spikes 15–20 mm long, golden. Flowers 5-merous; calyx variably dissected 1/3–2/3 its length, puberulous. Pods broadly linear, flat, slightly raised over but not constricted between seeds, 10–12 cm long, 6–7 mm wide, ±thinly coriaceous to crustaceous, with dense, ±appressed, white hairs when young but aging glabrous. Seeds longitudinal, oblong to elliptic, 5–6 mm long, flattened, brown; aril relatively small, creamy white.


W.A.: 0.5 km W of Port Hedland–Newman railway crossing on Wittenoom–Roy Hill rd, L.Thomson LXT1127 (PERTH).


The hybrid status of this entity is based on field observations and morphology of specimens examined; it occurred in a population with both putative parents. For further information see B.R.Maslin et al., Wattles of the Pilbara CD-ROM (2010).

FOA Reference

Flora of Australia Project