One familiar with the southeastern Florida ecology?

Sorry, I’m still too discombobulated to be able to post pics, but I noticed when I went out to survey hurricane damage this morning that one of the changes overnight was a lawnful of mushrooms. There seem to be two varieties (I’m assuming that they aren’t variations on the same species). One is flat and gilled, and the other has a circular head. Both are white, and as the day progressed, they developed brown areas on top.

Anyone know what they are, and if having them for dinner would result in delicious nutrition, or a trip to the emergency ward?