• Species: Protoparmelia badia (Hoffm.) Hafellner
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Protoparmelia picea auct.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: doubtful extinct

• Species: Protoparmeliopsis achariana (A.L. Sm.) Moberg & R. Sant.
• Remark: earlier under Lecanora achariana A.L. Sm.
• Fungus type: lichenized
• Treatment in Estonia: certain
• Achariuse sõõrsamblik (endine Achariuse liudsamblik)

• Species: Protoparmeliopsis macrocyclos (H. Magn.) Moberg & R. Sant.
• Remark: earlier under Lecanora macrocyclos (H. Magn.) Degel.
• Fungus type: lichenized
• Treatment in Estonia: certain
• suur sõõrsamblik (endine suur liudsamblik)

• Species: Protoparmeliopsis muralis (Schreb.) M. Choisy
• Remark: earlier under Lecanora muralis (Schreb.) Rabenh.
• Fungus type: lichenized
• Treatment in Estonia: certain
• rant-sõõrsamblik (endine rant-liudsamblik)

• Species: Protothelenella corrosa (Körb.) H. Mayrhofer & Poelt
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Protothelenella sphinctrinoides (Nyl.) H. Mayrhofer & Poelt
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: doubtful extinct

• Species: Pseudevernia furfuracea (L.) Zopf
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• hall karesamblik

• Species: Pseudosagedia aenea (Wallr.) Hafellner & Kalb
• Remark: earlier under Porina aenea (Wallr.) Zahlbr.
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Pseudosagedia chlorotica (Ach.) Hafellner & Kalb
• Remark: earlier under Porina chlorotica (Ach.) Müll. Arg.
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Pseudosagedia linearis (Leight.) Hafellner & Kalb
• Remark: earlier under Porina linearis (Leight.) Zahlbr.
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Psilolechia clavulifera (Nyl.) Coppins
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Psilolechia lucida (Ach.) M. Choisy
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Psora decipiens (Hedw.) Hoffm.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• stepi-naastsamblik

• Species: Psorotichia schaereri (A. Massal.) Arnold
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Ptychographa flexella (Ach.) Coppins
• Remark: see: Elixia flexella
• Fungus type: lichenized
• Treatment in Estonia: synonym

• Species: Punctelia subrudecta (Nyl.) Krog
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain extinct
• hiis-täppsamblik

• Species: Pycnora praestabilis (Nyl.) Hafellner
• Remark: earlier under Hypocenomyce praestabilis (Nyl.) Timdal
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Pycnora sorophora (Vain.) Hafellner
• Remark: earlier under Hypocenomyce sorophora (Vain.) P. James & Poelt
• Fungus type: lichenized
• Treatment in Estonia: certain
• tera-soomussamblik

• Species: Pycnothelia papillaria (Ehrh.) Dufour
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• harilik nisasamblik

• Species: Pyrenidium actinellum Nyl.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Pyrenochaeta xanthoriae Diederich
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Pyrenula coryli A. Massal.
• Remark:
• Fungus type: saprotrophic
• Treatment in Estonia: certain
• sarapuu-luulissamblik

• Species: Pyrenula laevigata (Pers.) Arnold
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• hõbe-luulissamblik

• Species: Pyrenula nitida (Weigel) Ach.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: doubtful extinct

• Species:
• Remark:
• Fungus type:
• Treatment in Estonia: