• Species: Sclerophora pallida (Pers.) Y. I. Yao & Spooner
• Remark: earlier under Sclerophora nivea (Hoffm.) Tibell
• Fungus type: lichenized
• Treatment in Estonia: certain
• lumi-nuisamblik

• Species: Sclerophora peronella (Ach.) Tibell
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• võrk-nuisamblik

• Species: Scoliciosporum chlorococcum (Stenh.) Vězda
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• linna-rohesamblik

• Species: Scoliciosporum pruinosum (P. James) Vězda
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Scoliciosporum sarothamni (Vain.) Vězda
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Scoliciosporum umbrinum (Ach.) Arnold
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Scutula epiblastematica (Wallr.) Rehm
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Scutula heeri (Hepp) P. Karst.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Scutula miliaris (Wallr.) Trevis.
• Remark: includes Karsteniomyces peltigerae (P. Karst.) D. Hawksw. as anamorph
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Skyttea elachistophora (Nyl.) Sherwood & D. Hawksw.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Skyttea gregaria Sherwood, D. Hawksw. & Coppins
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Skyttea nitschkei (Körb.) Sherwood, D. Hawksw. & Coppins
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Solorina bispora Nyl.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• kaheeoseline lohksamblik

• Species: Solorina saccata (L.) Ach.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• harilik lohksamblik

• Species: Solorina spongiosa (Ach.) Anzi
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• käsnjas lohksamblik

• Species: Sphaerellothecium araneosum (Rehm ex Arnold) Zopf
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Sphaerellothecium araneosum var. cladoniae Alstrup & Zhurb.
• Remark: see: Sphaerellothecium cladoniae
• Fungus type: lichenicolous
• Treatment in Estonia: synonym

• Species: Sphaerellothecium propinquellum (Nyl.) Cl. Roux & Triebel
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Sphaerophorus globosus (Huds.) Vain.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• kerajas korallsamblik

• Species: Sphinctrina turbinata (Pers.) De Not.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Squamarina lentigera (Weber) Poelt
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• valge vahasamblik

• Species: Staurothele caesia (Arnold) Arnold
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Staurothele fissa (Taylor) Zwackh
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain extinct

• Species: Staurothele frustulenta Vain.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Steinia geophana (Nyl.) Stein
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

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