This is such a good picture I couldn't resist showing it off. I saw one of these flowering in Kings Cross a couple of days ago. It was being used as a street tree and was as tall as the 3 storey block of flats it was sheltering.
We've had some rain at last so fungi are popping up all over the place. These are rather beautiful examples of Coprinus niveus (I think). I consulted my A Field Guide Companion to Australian Fungi by Bruce Fuhrer and that was the closest match.