Pongam flowering tree (Pongamia pinnata)
Synonyms: , Millettia pinnata, Pongamia glabra, Derris indica, Galedupa pinnata
Common names: Pongam Tree, Indian Beech Tree, Honge Tree, Panigrahi, Karanja
Medium to large size tree can be seen growing in Brisbane.
Pea flowers in inflorescences and large light-green deltoid (heart shaped) leaves.
It is native to humid and sub-tropic environments (Asia, West Africa, Australasia...), It grows in the littoral zone behind beaches.
They say it is common along waterways or seashores, with its roots in fresh or saltwater.
In Australia normally (!) flowers November-December
Credit to 'Tony Rodd from Sydney' for ID help.
(The image is used in many websites, often illegally: