Key
James P. Bennett and Clifford M. Wetmore
Species Count: 109
Acarosporaceae
Arthoniaceae
Caliciaceae
Candelariaceae
Cladoniaceae
Collemataceae
Graphidaceae
Koerberiaceae
Lecanoraceae
Lecideaceae
Massalongiaceae
Megasporaceae
Mycocaliciaceae
Ochrolechiaceae
Ophioparmaceae
Parmeliaceae
Peltigeraceae
Physciaceae
Pilocarpaceae
Psoraceae
Ramalinaceae
Rhizocarpaceae
Stereocaulaceae
Teloschistaceae
Trapeliaceae
Umbilicariaceae
Verrucariaceae