Sp. Pl. 2: 1056 (1753) APNI
Establishment means:Sparingly established
Tree to 25 m high, usually armed with spines to c. 18 cm long. Leaves 15–20 cm long, pinnate or bipinnate; pinnate leaves mostly with 10–15 pairs of pinnae; bipinnate leaves with 2–13 pairs of pinnae, leaflets 12–30 per pinnae, elliptic to ovate, mostly 10–35 mm long, 5–12 mm wide, sparsely toothed. Flowers yellowish-green, in slender racemes to c. 13 cm long; male flowers sessile, densely clustered; bisexual flowers pedicellate and well-spaced. Sepals lanceolate, 3–4 mm long; petals ovate to ovate-lanceolate, 4–6 mm long; ovary densely pubescent. Pod oblong, somewhat falcate, 15–40 cm long, 3–4 cm wide, dark brown, pilose; seeds 15–25, ovoid to elliptic, c. 10 mm long, embedded in thick pulp. Flowers spring–summer.
*GipP, *MuF, *NIS, *VRiv. Native of North America, cultivated as an ornamental or shade tree. Seedlings produced by planted trees have been recorded in paddocks in north-eastern Victoria.
This species is serious weed in New South Wales and Queensland where plants are known to reproduce from seed and suckers, often forming dense thickets along watercourses.
|Bioregion||Occurrence status||Establishment means|
|Victorian Volcanic Plain||present||cultivated|
|Northern Inland Slopes||present||introduced|
|New South Wales|
|Australian Capital Territory|