A single tree on the outskirts of Wolumla, planted, but it has obviously been there quite a long time. Superficially similar to a Kurrajong, Brachychiton populneus, but the leaves are larger and darker. 4th photo is the leaf underside.
Although the leaf shape is basically all you need to identify this Senecio species, I thought these photos were worth taking as they give a good look at the achenes and the approximate number of involucral bracts (8-10 in NSW Flora for this species).
Not common in the area. This is usually a tablelands species. This site is at around 500m elevation.