• Species: Stenocybe pullatula (Ach.) Stein
• Remark:
• Fungus type: saprotrophic
• Treatment in Estonia: certain

• Species: Stereocaulon alpinum var. gracilentum (Th. Fr.) H. Magn.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• sale tinasamblik

• Species: Stereocaulon condensatum Hoffm.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• pisi-tinasamblik

• Species: Stereocaulon dactylophyllum Flörke
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• sõrm-tinasamblik

• Species: Stereocaulon evolutum Graewe ex Th. Fr.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain extinct
• rull-tinasamblik

• Species: Stereocaulon glareosum (Savicz) H. Magn.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• kruusa-tinasamblik

• Species: Stereocaulon incrustatum Flörke
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• kribu-tinasamblik

• Species: Stereocaulon paschale (L.) Hoffm.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• nõmm-tinasamblik

• Species: Stereocaulon saxatile H. Magn.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• kivi-tinasamblik

• Species: Stereocaulon subcoralloides (Nyl.) Nyl.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• korall-tinasamblik

• Species: Stereocaulon tomentosum Fr.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• vilt-tinasamblik

• Species: Stereocaulon vesuvianum Pers.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain extinct
• paljas tinasamblik

• Species: Stigmidium cladoniicola Zhurb. & Diederich
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium congestum (Körb.) Triebel
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium fuscatae (Arnold) R. Sant.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium lecidellae Triebel, Cl. Roux & Le Coeur
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium microspilum (Körb.) D. Hawksw.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium mycobilimbiae Cl. Roux, Triebel & Etayo
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium peltideae (Vain.) R. Sant.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium pumilum (Lettau) Matzer & Hafellner
• Remark: see: Sphaerellothecium pumilum
• Fungus type: lichenicolous
• Treatment in Estonia: synonym

• Species: Stigmidium solorinarium (Vain.) D. Hawksw.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Stigmidium xanthoparmeliarum Hafellner
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Strangospora moriformis (Ach.) Stein
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Strangospora pinicola (A. Massal.) Körb.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Strigula stigmatella (Ach.) R.C. Harris
• Remark: see:Swinscowia stigmatella (Ach.) S.H. Jiang, Lücking & Sérus.
• Fungus type: lichenized
• Treatment in Estonia: synonym

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