Xerocomus is a genus of fungi which is closely related to Boletus. Many mycologists don't recognize the distinction. Most members of Xerocomus are edible. Ladurner and Simonini published a monograph on Xerocomus in 2003. Molecular phylogenetic studies strongly imply that Xerocomus is a heterogeneous genus of polyphyletic origin. Species X. badius (edible and often known as Boletus badius) X. chrysenteron (edible and very common) X. subtomentosus (edible and very common) X. truncatus (edible… (More on Xerocomus)