• Species: Fulgensia bracteata (Hoffm.) Räsänen
• Remark: see: Gyalolechia bracteata
• Fungus type: lichenized
• Treatment in Estonia: synonym
• harilik särasamblik

• Species: Fulgensia fulgens (Sw.) Elenkin
• Remark: see: Gyalolechia fulgens
• Fungus type: lichenized
• Treatment in Estonia: synonym
• hõlmik-särasamblik

• Species: Fuscidea arboricola Coppins & Tønsberg
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Fuscidea cyathoides (Ach.) V. Wirth & Vězda
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Fuscidea lygaea (W. Mann) V. Wirth & Vězda
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: doubtful extinct

• Species: Fuscidea praeruptorum (Du Rietz & H. Magn.) V. Wirth & Vězda
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Fuscidea pusilla Tønsberg
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Fuscopannaria leucophaea (Vahl) P.M. Jørg.
• Remark: see: Vahliella leucophaea; earlier also under Pannaria leucophaea
• Fungus type: lichenized
• Treatment in Estonia: synonym
• harilik kaljusamblik

• Species: Graphis scripta (L.) Ach.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• harilik kirisamblik

• Species: Graphium aphthosae Alstrup & D. Hawksw.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

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