Some Agaricus

We had some heavy rain the other day, followed by a couple of very
warm days, and now we have many Agaricus on the lawns and roadsides.
Very nice to see.

Here a fairly new one was shoving up near some rather older specimens.
I'm not sure what either one was, though there were lots of much
plainer-topped Agaricus in the neighborhood (they are probably A.
campestris).