The Moss Flora of Britain and Ireland. 2nd rev. ed. 2004. illus. (line - drawings). XI, 1012 p. gr8vo. Paper bd.

Describes and illustrates the 763 species of mosses currently known to occur in the British isles and incorporates most up-to-date information available on nomenclature and classification, including recent synonyms. Frequency, ecology, geographical relationships and distribution, including information on protected species and those species at risk. Easily usable keys to genera and species. -Incorporates the very considerable advances in knowledge of mosses made in the last quarter of the twentieth century.In this time eight species new to science have been described in Britain, 25 species not previously known in the British Isles have been discovered and taxonomic revisions led to the addition of a further 51 species. Modern taxonomic methods have led to an increase in the number of genera from175 to 214.