Kind of look like Lepista nuda to me.... but don't go eating them just on that!
Hmmm, maybe not tho. need to see older ones maybe, with the cap inside out. To see if the gills are attached.
Nevermind. I dunno.
[edit. Okay, changed my mind again. I think they are L. nuda. or Clitocybe nuda (synonym). see here:
http://forums.mycotopia.net/showthre...t=lepista+nuda (Clitocybe/Lepista Nuda (Blewit's)) ]