Agaricus

Beautiful spotting!

Thanks! I labelled it as just "Agaricus" - thanks for the details, i know a lot more about insects and plants than I do about Fungi and Mushrooms - lots to learn!

Not quite a match - margin in-rolled on the purpurascens and highly adnate gills on yours.... as Shannon says might be best to leave it as Agaricus sp.

Not much information on A. purpurascens anywhere. I think that might be an obsolete term. Sometimes one has to be satisfied with getting as far as the genus from a photo.

Thanks ShannonInCT and ArgyBee for your ideas - I found this one, what do you think?
http://www.mushroomslook.com/p/127/agari...

I see brown-colored free gills. Should be Agaricus.

Nice set. Maybe lepiota or macrolepiota?