Orange Lichen 
Orange Sea Lichen 
Orange-cored Shadow Lichen 
Pannaria taveresii 
Paraporpidia leptocarpa 
Parmotrema Lichen 
Parmotrema reticulatum 
Pebbled Pixie Cup 
Peltigera britannica 
Peltigera didactyla 
Peltigera horizontalis 
Peppered Pelt Lichen 
Perforated Ruffle Lichen 
Pertusaria ophthalmiza 
Pertusaria subpertusa 
Phaeographis inusta 
Phaeophyscia adiastola 
Phaeophyscia orbicularis 
Phyllobaeis imbricata 
Physcia adscendens 
Physcia ascendens 
Physcia leptalea 
Physcia pumilior 
Physcia subtilis