Poisonous kinds look like edible ones.
I've heard they're edible. In Ohio, there are nearly 2,000 kinds of wild mushrooms in a variety of forms, colors and textures. Mushroom varieties grow from early spring through late fall, with most species appearing in the fall. Giant puffballs usually appear in late summer to early fall in lawns, pastures and other open areas. These mushrooms are edible, but are said to be tastiest before they become too large.