China is a diversity hotspot for fungi of the Boletaceae family (boletes). Many boletes have been traditionally treated as members of the genus Tylopidus based on the color of the hymenophores or the spore prints. The aims of this book are to delimit and recognize the diversity both of the genera and species of Tylopilus s.l. in China. Our morphological and multi locus phylogenetic studies reveal that the traditinally defined Tylopilus species cluster in 19 genera in Boletaceae, ineluding two ne