Panaeolus foenisecii

While I was dropping of a press release about our Spring Foray to the Argus Observer office, I decided to check out the Ontario cemetery. (Note to self, before Memorial Day is not a great time. Men with weed eaters are about, though at the moment it was lunchtime.) These were all over the back in various stages. I thought they might be this or Panaeolus separatus, but after spore print, and a look in Trudell's book, I think this is correct. Here are more details.