This spiral-bound handbook contains 93 distribution maps of the ferns and allied plants, including naturalised aliens and hybrids, of Britain and Ireland. The maps, which show natives as blue dots and aliens in red, and their accompanying texts, were copied under licence from New Atlas of the British & Irish Flora. The maps are presented in alphabetical order of Latin name, from Adiantum capillus-veneris to Woodsia ilvensis. The inside covers carry lists of the Latin and common names and there are three pages of references to the original literature.