List of species and infraspecific taxa
- Species: Arthonia mediella Nyl.
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Arthonia muscigena Th. Fr.
- Remark: see: Bryostigma muscigenum
- Fungus type: lichenized
- Treatment in Estonia: synonym
- Species: Arthonia patellulata Nyl.
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Arthonia punctiformis Ach.
- Remark: see: Naevia punctiformis
- Fungus type: saprotrophic
- Treatment in Estonia: synonym
- Species: Arthonia radiata (Pers.) Ach.
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Arthonia ruana A. Massal.
- Remark: see: Arthothelium ruanum
- Fungus type: lichenized
- Treatment in Estonia: synonym
- Species: Arthonia spadicea Leight.
- Remark: see:Diarthonis spadicea
- Fungus type: lichenized
- Treatment in Estonia: synonym
- Species: Arthonia varians (Davies) Nyl.
- Remark: earlier under Arthonia glaucomaria Nyl.
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Arthonia vinosa Leight.
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- puna-tähnsamblik
- Species: Arthopyrenia analepta Anzi
- Remark: earlier under Arthopyrenia lapponina Anzi
- Fungus type: saprotrophic
- Treatment in Estonia: certain
- Species: Arthopyrenia antecellens (Nyl.) Arnold
- Remark: see: Mycoporum antecellens
- Fungus type: saprotrophic
- Treatment in Estonia: synonym
- Species: Arthopyrenia cerasi (Schrad.) A. Massal.
- Remark:
- Fungus type: saprotrophic
- Treatment in Estonia: certain
- Species: Arthopyrenia cinereopruinosa (Schaer.) A. Massal.
- Remark:
- Fungus type: saprotrophic
- Treatment in Estonia: certain
- Species: Arthopyrenia grisea (Schleich. ex Schaer.) Körb.
- Remark:
- Fungus type: saprotrophic
- Treatment in Estonia: certain
- Species: Arthopyrenia lapponina Anzi
- Remark: see: Arthopyrenia analepta
- Fungus type: saprotrophic
- Treatment in Estonia: synonym
- Species: Arthopyrenia punctiformis (Pers.) A. Massal.
- Remark: see: Naetrocymbe punctiformis
- Fungus type: saprotrophic
- Treatment in Estonia: synonym
- Species: Arthopyrenia rhyponta (Ach.) A. Massal.
- Remark: see: Naetrocymbe rhyponta
- Fungus type: saprotrophic
- Treatment in Estonia: synonym
- Species: Arthothelium ruanum (A. Massal.) Körb.
- Remark: earlier under Arthonia ruana
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Arthothelium scandinavicum Th. Fr.
- Remark:
- Fungus type: saprotrophic
- Treatment in Estonia: certain
- Species: Arthothelium spectabile Flot. ex A. Massal.
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Arthrorhaphis aeruginosa R. Sant. & Tønsberg
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Arthrorhaphis citrinella (Ach.) Poelt
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Arthrosporum populorum A. Massal.
- Remark: see: Toninia populorum (A. Massal.) Kistenich, Timdal, Bendiksby & S. Ekman
- Fungus type: lichenized
- Treatment in Estonia: synonym
- Species: Aspicilia caesiocinerea (Nyl. ex Malbr.) Arnold
- Remark: see: Circinaria caesiocinerea
- Fungus type: lichenized
- Treatment in Estonia: synonym
- Species: Aspicilia calcarea (L.) Mudd
- Remark: see: Circinaria calcarea
- Fungus type: lichenized
- Treatment in Estonia: synonym
- lubi-lehtersamblik