British Lichen Society1997

Provides access through current plant names or synonyms, each with BLS identification numbers; includes: up to 4 photographs of every species; results of Pd, K, KC, and C chemical spot tests and UV response; a table of major chemical constituents indicated by TLC; cross references to similar species; a table of habitats showing likelihood of occurrence on different substrates; descriptions of each of the revised genera; an improved key based on the Flora key; and an extensive glossary of lichen terms.