Parmotrema Lichen 
Parmotrema reticulatum 
Pebbled Pixie Cup 
Perforated Ruffle Lichen 
Physcia subtilis 
physica stellaris 
Pink earth lichen 
Plitt's Pore Lichen 
Powdered Sunshine Lichen 
Psilolechia lucida 
Punctelia rudecta 
Punctelia subrudecta 
Pyrrhospora varians 
Ramalina sinensis 
Reindeer Lichen 
Reindeer Lichen 
Rhizocarpon geographicum 
Rhizoplaca chrysoleuca 
Rock Foam Lichen 
Rock-loving Cladonia 
Romjularia lurida 
Rosette Pixie-cup Lichen 
Rosy Saucer Lichen 
Salted Shield Lichen