CONTENTS 



Introduction 1 



Hymenolichen.es 2 



Lichenes Imperfecti 2 



Ascolichenes 2 



Gross Morphology 



Minute Morphology 6 



Reproduction 1? 



Habitat and Distribution 18 



Glossary 20 



Outline of Classification 23 



Key to Orders and Families 26 



Systematic Treatment of Families, Genera, and Species ... 29 



Verrucariaceae 29 



Dermatocarpaceae *7 



Pyrenothamniaceae 43 



Pyrenulaceae 44 



Trypetheliaceae 60 



Astrotheliaceae 63 



Strigulaceae ° 4 



Pyrenidiaceae °5 



Pyrenotrichaceae 65 



Mycoporaceae 66 



Caliciaceae 67 



Cypheliaceae '5 



Sphaerophoraceae 78 



Arthoniaceae '8 



Graphidaceae 95 



Chiodectonaceae 119 



Dirinaceae 123 



52571 



