Ulex europaeus
The transition zone can stretch quite a distance and contain saltmarsh ribbonwood ("Plagianthus divaricatus"), cabbage trees ("Cordyline australis"), and invasive gorse ("Ulex europaeus"), gradually incorporating kahihatea, southern rātā, and kōwhai ("Sophora microphylla") as salinity declines; or it can take place over just a few metres on the bank of a creek.