Key
James P. Bennett and Clifford M. Wetmore
Species Count: 208
Acarosporaceae
Caliciaceae
Candelariaceae
Chrysotrichaceae
Cladoniaceae
Collemataceae
Graphidaceae
Icmadophilaceae
Lecanoraceae
Lecideaceae
Lichenotheliaceae
Lichinaceae
Megasporaceae
Ochrolechiaceae
Pannariaceae
Parmeliaceae
Peltigeraceae
Peltulaceae
Physciaceae
Psilolechiaceae
Psoraceae
Ramalinaceae
Sporastatiaceae
Squamarinaceae
Stereocaulaceae
Teloschistaceae
Tephromelataceae
Umbilicariaceae
Verrucariaceae