Where found:

• Margins of lowland and coastal lakes, streams and ponds
  
• Usually emergent from shallow water
  

• Stiff erect blue-green stems 1 - 2 metres tall from a creeping rhizome.
  
• Leaves reduced to papery sheaths
  
• Flowering head brown, 12 cm wide, much branched and lopsided
  
• Nut light grey