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Plant Form Tufted perennial grass. Size Up to 1 m tall. Stem Slender, upright, hairless. Leaves Flat or rolled with spreading blades, sheath partially enclosing the stem, yellowing with age. Flowers Dense head spreading wide and loose with age, spikelets are grey to purplish. Fruit and Seeds Tiny seeds 0.3 mm to 0.7 mm long, oval shaped. Habitat Roadsides, disturbed sites, spreading into pasture and grasslands. Distinguishing Features Loose grey or purplish seedheads, and stems forming into large tufts. Impacts Crowds out native species while modifying vegetation structure, can be less palatable for stock.