Noogoora burr

Family: Asteraceae
Scientific name: Xanthium occidentale
Description: 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).

Example images for this weed