Bolboschoenus fluviatilis, Ririwaka - Pb2

Also known as Ririwaka or Kukuraho. Native rhizomatous perennial to 2.5m tall that usually forms tubers. A useful species for stabilizing banks as it will not spread into deep waters. Dies back slightly in winter in cooler areas. Easily identified by its persistent bristles surrounding and as long as the nut flowers.