Boletus edulis

Boletes (aka Porcini) can often be found in mixed Conifer (especially Pine) and deciduous forests with  in late August to January.  They can easily be distinguished from a similar family of mushrooms called Suillus by observing the pores and tubes under the cap:  Suillus pores appear irregularly shaped while Boletus pores appear more uniform in size.  

Jason Hollinger