A Field Key to Coastal and Seashore Lichens
This guide contains colour photographs and illustrated keys. These keys use only characters that are visible in the field by eye or under a x10 hand lens. This combination enables the user to identify over 500 species of lichen to be found on the coast and seashore. Also includes three supplementary keys to lichens on limestone, concrete and mortar, lichens on sawn wood and lichens on soil, mosses and plant debris.