Agaricus Bisporus

[Lee Snider]

:     Surely the only community one has to be part of to get Agaricus
: Bisporus is the community of grocery shoppers.  Aren't these always in
: the shops here?  Is another species more common in the stores wherever
: you are?

I was under the assumption that Agaricus Brunescens was the common 
grocery store mushroom. I could be wrong (I'm not sure I even spelled
it right). 

Lee Snider