Notes on bolete taxonomy—III

Contributions involving bolete taxonomy during the last ten years have not only widened the knowledge and increased the number of species in the boletes and related lamellate and gastroid forms, but have also introduced a large number of new data on characters useful for the generic and subgeneric taxonomy of these fungi, resulting, in part, in new taxonomical arrangements. It is therefore timely to consider these new data with a view to integrating them into an amended classification which, if it pretends to be natural must take into account all observations of possible diagnostic value. It must also take into account all sufficiently described species from all phytogeographic regions.