Key
James P. Bennett and Clifford M. Wetmore
Species Count: 412
Acarosporaceae
Arthoniaceae
Baeomycetaceae
Bionectriaceae
Caliciaceae
Candelariaceae
Chrysotrichaceae
Cladoniaceae
Collemataceae
Coniocybaceae
Cystocoleaceae
Graphidaceae
Icmadophilaceae
Lecanoraceae
Lecideaceae
Leprocaulaceae
Lichenoconiaceae
Lichinaceae
Massalongiaceae
Megasporaceae
Mycocaliciaceae
Mycosphaerellaceae
Ochrolechiaceae
Ophioparmaceae
Pannariaceae
Parmeliaceae
Peltigeraceae
Physciaceae
Pilocarpaceae
Placynthiaceae
Porpidiaceae
Psoraceae
Pycnoraceae
Ramalinaceae
Rhizocarpaceae
Sporastatiaceae
Squamarinaceae
Stereocaulaceae
Teloschistaceae
Tephromelataceae
Thelocarpaceae
Thrombiaceae
Trapeliaceae
Tremellaceae
Umbilicariaceae
Verrucariaceae
Xylographaceae