This is a manual with keys and descriptions to 394 poroid fungi known from Europe out of which 210 are illustrated with colour pictures. Black and white drawings are provided for 120 representative species; besides spore drawings are given for some larger genera. Macro and microscopical characters are described and illustrated and decay and pathological significance are discussed. The taxonomic concepts are conservative and pragmatic as the book is primarily a tool for species identification and not a study of the phylogeny of the poroid fungi. Six new combinations are proposed.