Red Data Books of Britain and Ireland: Lichens Vol. 1 Britain

84pp, some col photos. Only recently has knowledge of the ecology and distribution of British lichens reached a stage where a Red Data Book, listing and carefully describing 177 species (about 11% of the current checklist), can be compiled. A further localised or less threatened 187 species are also mentioned. Information re status, distribution, sites, and possible reasons for decline. Hardback.