This monograph aid in the identification and study of fungi in the Cryphonectriaceae. Numerous studies revising the taxonomy of Cryphonectria or reporting on new hosts of these fungi have been published during the course of the past decade. The aim of this book is to draw together all recent and relevant information relating to the Cryphonectriaceae in one volume. This will considerably enhance the ability of plant pathologists, mycologists, and forest scientists to identify the important fungi residing in this Cryphonectriaceae family. The DNA database, keys, and descriptions for all Cryphonectria species and related taxa will also enhance the ability of those involved in quarantine regulations to recognize these fungi and help to reduce the chance of their accidental introduction into new areas.