• Species: Arthonia ligniaria Hellb.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

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