On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Basal sheaths are dark purple, or red-purple to black

Trevor James, AgResearch

Right: plants are 1-2 m tall, with hard stems and capsules which are 2.5 mm or longer. Found in damp pasture or swamp margins. Juncus sarophorus. [PDF 411 KB]