Preface -- What are lichens -- How to make chemical tests -- How to collect and study lichens -- How to use the pictured key -- General references -- Pictured key to the foliose and fruticose lichens -- List of synonyms and incorrect names -- Phylogentic list of genera and families -- Acknowledgments for illustration -- index and pictured glossary.
Introduction -- Mosses, their structure and biology -- Liverworts, their structure and biology -- Lichens, their structure and biology -- Horsetails, club mosses and ferns, their structure and biology -- Additional literature -- Glossary.