Lichens, An Illustrated Guide to the British and Irish Species

Over 850 British lichen species included with descriptions, notes on habitat and tolerance of pollution, and a distribution map for each. Color photograph for most species. Line drawings of microscopic and other diagnostic features included. There are frequent suggestions to assist in separating species that appear similar but could cause confusion. 'Lateral key' has been enlarged to include a much extended sterile section. Generic symopsis is included to assisst the more experienced lichenologist.