- Trevor James, AgResearch / Kerry Bodmin, NIWA
Flower heads are open, with more than one cluster
- Trevor James, AgResearch
Pith is interrupted
- Trevor James, AgResearch
Flowers are grouped at the ends of branches
- Trevor James, AgResearch
Stems are not bright green, and capsules are 2-3.5 mm long
- Trevor James, AgResearch
Flowers are evenly-distributed along branches