Schizolobium parahybum, Mexican Tree Fern

Schizolobium parahybum 
Tower Tree, in Wollongong Botanic Gardens

This tree from Brazil and Panama was given the common name of Mexican Tree Fern years ago in the Nursery trade perhaps because the central leaves fan out in much the same way as a tree fern does.It is quite an extraordinary tree to grow because it is so fast growing and remains straight, and slender to about 30 metres.The trunk on young trees remains green and is somewhat sticky to touch. Clusters of bright yellow flowers appear in summer and are just visible in this photo. It is deciduous in winter so you are left with a "flag pole" at that time of year.
2017 update: I have a few advanced plants available