This is a beautiful flower tree.Buckinghamia celsissima is commonly called the Ivory Curl Tree. It's a native of North Eastern Queensland, and for years was widely planted as a street tree around Brisbane.
In flower, it's stunning and a great plant for most gardens. The trees grow naturally in rainforests in Queensland and northern New South Wales, but also grow happily throughout most of Australia, including as far south as Melbourne.

However Buckinghamia celsissima doesn't do well in Canberra, because it hates frosts.
In its natural rainforest it grows to about 25 metres to reach the light above the tree canopy.

Buckinghamia celsissima is a great plant - it doesn't seem to suffer pests and diseases, is adaptable and will grow in many areas of Australia.

Source-http://www.abc.net.au/gardening/factsheets/buckinghamia-celsissima/9423910