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Plant Form: Annual herb.
Size: Up to 2 m tall.
Stem: Not spiny, hairy.
Leaves: Mostly heart-shaped to triangular in outline, weakly lobed, irregularly toothed, up to 15 cm long, with long stalks.
Flowers: Inconspicuous, clustered, whitish to greenish flowerheads.
Fruit and Seeds: Burrs up to 18 mm long, hairy, with many hooked spines on surface and two equally long, straight beaks at the end.
Habitat: Riverbanks, creeks, disturbed areas.
Distinguishing Features: Differs from Bathurst burr (Xanthium spinosum) in not having spines on the stem. Is sometimes considered to be part of Noogoora burr (X. strumarium).