• Species: Ramalina siliquosa (Huds.) A.L. Sm.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• kivi-rihmsamblik

• Species: Ramalina sinensis Jatta
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• hiina rihmsamblik

• Species: Ramalina subfarinacea (Nyl. ex Cromb.) Nyl.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• kitsas rihmsamblik

• Species: Ramalina thrausta (Ach.) Nyl.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• niitjas rihmsamblik

• Species: Ramboldia insidiosa (Th. Fr.) Hafellner
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Ramonia luteola Vězda
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Refractohilum peltigerae (Keissl.) D. Hawksw.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Reichlingia leopoldii Diederich & Scheid.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain extinct

• Species: Rhizocarpon cinereovirens (Müll. Arg.) Vain.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

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