When first formed, this mushroom is white throughout. As the spores which make it up mature, it changes to a yellowish or brown color. Eventually, it splits open, distributing millions of spores. This mushroom is edible, and can sometimes be found for sale at farmers' markets. As with all mushrooms, however, caution is in order.
Many mushrooms cause negative reactions in some or all people, and some are extremely poisonous.
Never eat a wild mushroom unless you are positive of its identification as an edible species. Try drawing the many kinds of fungi you see, and see if you can determine what material the fungus is growing on.