This plant is Myrtaceae because of its numerous stamens, woody stem and aromatic leaves. It also has 5 petals and simple leaves. This is in the Leptosperm genus as the leaves are small and aromatic, like tea-trees, and match the large showy flowers with a cup shape calyx and single style sticking out of the centre of the cup. The species is Leptosperm deani as the leaves are hairless, slender and the bark is peeling in long strips. It also matches the distribution in the north shore. I have excluded possible alternatives which have very similar flowers, such as Leptospermum polygalifolium, as the bark is not hard and instead flaky.