Rhopalostylis Baueri var cheesemanii

This palm as its common name suggests is found only on Raoul Island in the Kermadec group. It is a far more tropical looking palm compared to the NZ Nikau having larger, wider fronds and slightly lime green in colour and much larger more open flower heads. Although it will tolerate growing in the shade it will grow much better when it can head to full sunlight.
We have a great comparison in our nursery garden of two of these palms planted at the same time, one in the sun and one in shade. The plant in the sun has a fully formed trunk over a metre high and has been flowering for a number of years, whereas the palm in the shade has not yet produced a trunk nor has it flowered. They are best planted in rich fertile soil, in a sheltered north facing location.