Bushy Beard Lichen 
Calcareous Rimmed Lichen 
Caloplaca aurantia 
Caloplaca cerina 
Caloplaca erythrocarpa 
Caloplaca flavovirescens 
Caloplaca ignea 
Caloplaca ochracea 
Candelaria concolor 
Canoparmelia caroliniana 
Cape Flame Lichen 
Cartilage Lichen 
Catawba Everniastrum Lichen 
Cinder Lichen 
Cladia retipora 
Comet Spored Lichen 
Common button lichen 
Common Cladia 
Common Greenshield Lichen 
Common Powderhorn 
Common Sunburst Lichen 
Common Toadskin Lichen 
Crabseye Lichen 
Crescent Map Lichen