Key
James P. Bennett and Clifford M. Wetmore
Species Count: 428
Acarosporaceae
Arthrorhaphidaceae
Baeomycetaceae
Caliciaceae
Candelariaceae
Chrysotrichaceae
Cladoniaceae
Coccocarpiaceae
Collemataceae
Coniocybaceae
Dactylosporaceae
Fuscideaceae
Graphidaceae
Gyalectaceae
Harpidiaceae
Hymeneliaceae
Icmadophilaceae
Koerberiaceae
Lecanoraceae
Lecideaceae
Lopadiaceae
Massalongiaceae
Megasporaceae
Ochrolechiaceae
Ophioparmaceae
Ostropomycetidae_family_incertae_sedis
Pannariaceae
Parmeliaceae
Peltigeraceae
Pertusariaceae
Physciaceae
Pilocarpaceae
Placynthiaceae
Psilolechiaceae
Psoraceae
Ramalinaceae
Rhizocarpaceae
Ropalosporaceae
Schaereriaceae
Sphaerophoraceae
Sporastatiaceae
Squamarinaceae
Stereocaulaceae
Teloschistaceae
Tephromelataceae
Trapeliaceae
Umbilicariaceae
Verrucariaceae