• Species: Clauzadea monticola (Schaer.) Hafellner & Bellem.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Cliostomum corrugatum (Ach.) Fr.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• hele ketassamblik

• Species: Cliostomum flavidulum Hafellner & Kalb
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Cliostomum griffithii (Sm.) Coppins
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Cliostomum leprosum (Räsänen) Holien & Tønsberg
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Clypeococcum cetrariae Hafellner
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Clypeococcum hypocenomycis D. Hawksw.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Collema auriforme (With.) Coppins & J.R. Laundon
• Remark: see: Lathagrium auriforme
• Fungus type: lichenized
• Treatment in Estonia: synonym
• kõrv-limasamblik

• Species: Collema bachmanianum (Fink) Degel.
• Remark: see: Enchylium bachmanianum
• Fungus type: lichenized
• Treatment in Estonia: synonym
• Bachmani limasamblik

• Species: Collema crispum (Huds.) Weber ex F.H. Wigg.
• Remark: see: Blennothallia crispa
• Fungus type: lichenized
• Treatment in Estonia: synonym
• kähar limasamblik

• Species: Collema cristatum (L.) Weber ex F.H. Wigg.
• Remark: see: Lathagrium cristatum
• Fungus type: lichenized
• Treatment in Estonia: synonym
• hari-limasamblik

• Species: Collema flaccidum (Ach.) Ach.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• soomus-limasamblik

• Species: Collema fluviatile (Huds.) Steud.
• Remark: see: Lathagrium dichotomum; earlier also under Collema dichotomum
• Fungus type: lichenized
• Treatment in Estonia: synonym extinct
• jõgi-limasamblik

• Species: Collema fuscovirens (With.) J.R. Laundon
• Remark: see: Lathagrium fuscovirens
• Fungus type: lichenized
• Treatment in Estonia: synonym
• tume limasamblik

• Species: Collema limosum (Ach.) Ach.
• Remark: see: Enchylium limosum
• Fungus type: lichenized
• Treatment in Estonia: synonym
• kile-limasamblik

• Species: Collema nigrescens (Huds.) DC.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• must limasamblik

• Species: Collema occultatum Bagl.
• Remark: see: Rostania occultata
• Fungus type: lichenized
• Treatment in Estonia: synonym
• tera-limasamblik

• Species: Collema parvum Degel.
• Remark: see: Scytinium parvum
• Fungus type: lichenized
• Treatment in Estonia: synonym
• pisi-limasamblik

• Species: Collema polycarpon Hoffm.
• Remark: see: Enchylium polycarpon
• Fungus type: lichenized
• Treatment in Estonia: synonym
• viljakas limasamblik

• Species: Collema subnigrescens Degel.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• mustjas limasamblik

• Species: Collema tenax (Sw.) Ach.
• Remark: see: Enchylium tenax
• Fungus type: lichenized
• Treatment in Estonia: synonym
• sitke limasamblik

• Species: Collema undulatum Laurer ex Flot.
• Remark: see: Lathagrium undulatum
• Fungus type: lichenized
• Treatment in Estonia: synonym
• laineline limasamblik

• Species: Cornutispora lichenicola D. Hawksw. & B. Sutton
• Remark: see: Spirographa lichenicola (D. Hawksw. & B. Sutton) Flakus, Etayo & Miądl.
• Fungus type: lichenicolous
• Treatment in Estonia: synonym

• Species: Corticifraga fuckelii (Rehm) D. Hawksw. & R. Sant.
• Remark:
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species: Cybebe gracilenta (Ach.) Tibell
• Remark: see: Chaenotheca gracilenta
• Fungus type: lichenized
• Treatment in Estonia: synonym
• sire säärsamblik

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