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Plant Form: Shrub to small tree.
Size: 3-15 m tall.
Stem: Single in tree form or multiple in shrub form. Characteristic zig-zag shape with smooth dark reddish-green bark when young becoming grey and rough with age. A pair of spines normally arise above leaf stalks.
Leaves: Twice-divided fern-like with 1-4 pairs of leaflets each with 7-21 secondary leaflet pairs. Often with 1-2 thorns at base of leaf.
Flowers: Greenish cream-yellow flowers in cylindrical flowerhead 5-8 cm long.
Fruit and Seeds: Smooth pods which are green when young turning straw-coloured or purplish with age. Up to 20 cm long, with slight constrictions between each of 5-20 seeds within.
Habitat: Rangelands, shrublands.
Distinguishing Features: Differs from Acacias (Acacia species) and Prickly acacias (Vachellia species) by having a cylindrical rather than globular flowerhead.
Environmental, Agricultural, Common