I am not a mycologist by any means but I do harvest a couple of dozen varieties of mushrooms every year. I don't recognize that as one of my edibles so I would leave it alone. Do not think that it is a death cap though.
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Moral indignation is a technique used to endow the idiot with dignity.
Bit of a co-incidence. I'm spending a couple hours today looking for some late season Bolete's (red tops), or some early season Honey Mushrooms.
What you have picked looks like it could be a young Russula like Waxy Cap, a Grisett (aka Destroying or Deaths Angel), or even a common Psathyrella.
My advise would be do not eat it, or any others that look like it.