I think I've only posted a photograph of a mushroom just once before. This entry is a treat--it's of a beautiful sulfur shelf, also known as chicken of the woods, because of its texture.
They grow on old tree trunks--and in some cases they can be edible. Here's my advice--purchase your mushrooms at supermarkets.
I found this specimen at Dam Number 4 Woods East in Des Plaines, Illinois.