|Group of three. They're up to about 8 inches across.|
|Another trio. These start out "normal", like the small round one at the far right.|
|Tough-skinned, shiny under all the dust, raggedly gilled.|
I can't identify these. One of our neighbours says his mother used to cook them back in the "Old Country", in Eastern Europe. She boiled them with a silver spoon; if it tarnished, they were poisonous, he says. It's not a test I would trust.
I think I'll wait for an expert's opinion, a spore print, a DNA test, a test for pesticide contamination, and after all that, someone braver than I to play guinea pig.