Key
James P. Bennett and Clifford M. Wetmore
Species Count: 166
Acarosporaceae
Caliciaceae
Candelariaceae
Cladoniaceae
Collemataceae
Fuscideaceae
Hymeneliaceae
Icmadophilaceae
Lecanoraceae
Lecideaceae
Leprocaulaceae
Lopadiaceae
Megasporaceae
Ochrolechiaceae
Opegraphaceae
Pannariaceae
Parmeliaceae
Peltigeraceae
Physciaceae
Porpidiaceae
Psoraceae
Ramalinaceae
Rhizocarpaceae
Sphaerophoraceae
Sporastatiaceae
Stereocaulaceae
Teloschistaceae
Tephromelataceae
Trapeliaceae
Umbilicariaceae
Verrucariaceae