Where found:

• Margins of swampy lakes, ponds and rivers, also in swamps

• Robust, large clumps with round (4-6mm diameter) flower stalks originating from creeping rhizomes
  
• The soft, tubular rich green leaves with bamboo-like joints inside and flower stalks are equal length
  
• Drooping, much branched, red brown panicle
  
• Red brown nut 2mm long