The intensification of the international trade in nursery products underlines the need for uniformity in the naming of cultivated plants. The new editions of the international "List of Names of Perennials" and "List of Names of Woody Plants" together form a huge step in the right direction.

It is most gratifying that both these reference works have been recognised by the ENA (European Nursery Association) as the European standard works on the nomenclature of nursery plants. Furthermore, the "List of Names of Perennials" has been recognised as the standard reference work by the ISU (Internationale Stauden Union) and the PPA (Perennial Plant Association – in the United States).