Found about three dozens of Chlorophyllum rhacodes (shaggy parasol) today in the woods. They are all too young, they need to open and grow, their diameter can be as wide as a man's hand. I'm gonna make the time and check on them tomorrow, picking most could cover all my need for my occasional mushroomy soups (planning to dry them) for a year. I'm hoping noone will get them first.
I cut up one which was already chewed on by some animal, to make sure they are what I think they are.