Habitat: bank, coast, lake margin, margin, moist, open, pasture, peat, roadside, sand, silt, slope, wetland

Dispersal: Seed, vegetative

Distribution from the Australasian Virtual Herbarium. CC-BY 3.0 AU
Distribution from the Australasian Virtual Herbarium. CC-BY 3.0 AU
 Recognition
  • a perennial aquatic grass that is loosely tufted or forming loose masses in shallow water.
  • its leaves are up to 23 cm long, flat or folded, and scabrid on leaf ribs.
  • its inflorescence is erect or spreading, sometimes prostrate, and the flowering head large (up to 55 cm long) and with few spikelets.
  • its seeds are 2-3 mm long.
 Images
© Landcare Research
© Landcare Research
© Landcare Research
© Landcare Research
Weeds Key – interactive key to the weed species of New Zealand
 References
Biosecurity New Zealand 2012: Regional Pest Management Strategies Database. http://www.biosecurityperformance.maf.govt.nz/
Howell, C. 2008: Consolidated list of environmental weeds in New Zealand. DOC Research & Development Series 292: 42.