Poaceae

Nassella trichotoma

Common Names: Serrated tussock

Plant Form: Tussock forming erect perennial grass. Size: 20-70 cm tall. Stem: Narrow and upright, with papery ligules (leaf joints). White at base like shallots. Leaves: Very narrow and tightly rolled blades. Flowers: Branching, drooping seed heads up to 35 cm long with a single seed at end of each branch. Purple tinge when mature from seed bract. Fruit and Seeds: Golden brown, hard, small 1.5 mm long with awns offset from centre. Habitat: All types of terrain. Pastures, roadsides, grasslands, bare ground. Distinguishing Features: Extremely similar appearance to native Wallaby grasses (Austrostipa and Rytidosperma species) or Meadow grasses (Poa species), recommend seeking expert advice. Impacts: Unpalatable for livestock, reduces native biodiversity.

Grazed plants are like stiff brushes

Mature plants - rounded tussocks

Flowers and seed are very fine

Seed close-up

Infested pasture

Weedicide treated plants are orange