Key
James P. Bennett and Clifford M. Wetmore
Species Count: 153
Acarosporaceae
Arthoniaceae
Caliciaceae
Candelariaceae
Chrysotrichaceae
Cladoniaceae
Coccocarpiaceae
Collemataceae
Corticiaceae
Graphidaceae
Lecanoraceae
Lecideaceae
Leprocaulaceae
Megasporaceae
Mycocaliciaceae
Ochrolechiaceae
Opegraphaceae
Pannariaceae
Parmeliaceae
Peltigeraceae
Pertusariaceae
Physciaceae
Placynthiaceae
Porpidiaceae
Psoraceae
Pyrenulaceae
Ramalinaceae
Sarrameanaceae
Scoliciosporaceae
Sphinctrinaceae
Stereocaulaceae
Stictidaceae
Teloschistaceae
Trypetheliaceae
Verrucariaceae