Rhopalostylis 'Chathams' Chatham Island Nikau

The Chatham Island palm has broader fronds and is much more robust than the mainland nikau. Also will tolerate more exposed conditions.

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Rhopalostylis baueri var cheesemanii Kermadec nikau

The Kermadec nikau has longer fronds, larger flower heads and darker seeds than the mainland nikau.

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Rhopalostylis sapida Great Barrier Island

The Great Barrier Island nikau forms a more robust palm than the mainland nikau, tolerating more exposed conditions.