Larry Allain, USGS, Wetland & Aquatic Research Center / Trevor James, AgResearchStem has cross walls below flower heads
Kerry Bodmin, NIWA / Trevor James, AgResearchStem does not have cross walls below flower heads
Kerry Bodmin, NIWA / Trevor James, AgResearchPlant has more than 5 flower heads
Trevor James, AgResearchCapsule tapers to its tip
Trevor James, AgResearch / Kerry Bodmin, NIWACapsule is 2.5-3 mm long
Trevor James, AgResearch / Ros Cole, Department of ConservationTepals are 3 mm long or less
Trevor James, AgResearchFlower heads have fewer than 30 flowers, and leaves are not bristly
Trevor James, AgResearch / Allan Herbarium, Landcare ResearchFlowers are loosely clustered or solitary
Trevor James, AgResearchPith is cobwebby
Allan Herbarium, Landcare Research / Kerry Bodmin, NIWALower branches point upwards
Trevor James, AgResearchPith in stems is interrupted or lacking
