A type of Erythrina - rubrinevia? ID, please
looks more like E. cristagalli to me, but there are multiple species with a similar flower form. E. rubrinevia is more slender.
I hope you don't have to fight the Erythrina Gall Wasp in NZ...
Erythrina crista-galli looks a good match to me.
Thank you for your interest and help.
hypens are now obsolete in botanical names, so, it's E. cristagalli