Key
James P. Bennett and Clifford M. Wetmore
Species Count: 124
Acarosporaceae
Caliciaceae
Candelariaceae
Collemataceae
Graphidaceae
Lecanoraceae
Lecideaceae
Lichinaceae
Megasporaceae
Parmeliaceae
Physciaceae
Psoraceae
Ramalinaceae
Rhizocarpaceae
Squamarinaceae
Stereocaulaceae
Teloschistaceae
Verrucariaceae
Xanthopyreniaceae