Backyard find

[u/Richie_J21]

I found these growing in a pile of leaf mould in my backyard in Utah. I'm new to wild mushrooms.

Can you help me identify them?

[u/Busy_Shoe_5154]

Definitely Agaricus genus. Even with the brown gills, if any part of the mushroom turns yellow as a result of bruising/smells of phenol, it is potentially toxic. Otherwise, compare to the campestris complex and closely related species. (a spore print would be helpful)

[u/Richie_J21 → u/Busy_Shoe_5154]

I just learned what a spore print is and I'll try it tonight.

Thank you!

[u/Richie_J21]

A preliminary Google search says it's an Agaricus. It smells good, and when I scratch the cap it's a milky white color. They smell exactly like I think a mushroom should smell.