Siphonodon australis - Ivorywood
Family: Celastraceae

The common name refers to the tight-grained and easily worked white timber.
The greeny-yellow flowers are tine but sweetly fragrant as are the golfball-size fruits if broken open.
The leaves are leathery and smooth, sometimes with wavy margins and usually with a very blunt or rounded end.
The tree can reach 30m but rarely bigger than 15m.
It occurs in drier rainforest, vine thickets and monsoon forest.

Cultivation
Seed germination is difficult but old seed from the forest floor is best soaked for a couply of days.