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