List of species and infraspecific taxa
- Species: Toninia physaroides (Opiz) Zahlbr.
- Remark: see: Thalloidima physaroides
- Fungus type: lichenized
- Treatment in Estonia: synonym
- sammas-nappsamblik
- Species: Toninia sedifolia (Scop.) Timdal
- Remark: see: Thalloidima sedifolium
- Fungus type: lichenized
- Treatment in Estonia: synonym
- sinakas nappsamblik
- Species: Toninia verrucarioides (Nyl.) Timdal
- Remark: see: Toniniopsis verrucarioides
- Fungus type: lichenized
- Treatment in Estonia: synonym
- pruunikas nappsamblik
- Species: Trapelia coarctata (Sm.) M. Choisy
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Trapelia glebulosa (Sm.) J.R. Laundon
- Remark: earlier under Trapelia involuta (Taylor) Hertel
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Trapelia involuta (Taylor) Hertel
- Remark: see: Trapelia glebulosa
- Fungus type: lichenized
- Treatment in Estonia: synonym
- Species: Trapelia placodioides Coppins & P. James
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Trapeliopsis flexuosa (Fr.) Coppins & P. James
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Trapeliopsis glaucolepidea (Nyl.) Gotth. Schneid.
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Trapeliopsis granulosa (Hoffm.) Lumbsch
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- tera-varisesamblik
- Species: Trapeliopsis pseudogranulosa Coppins & P. James
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Trapeliopsis viridescens (Schrad.) Coppins & P. James
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Tremella cetrariicola Diederich & Coppins
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tremella cladoniae Diederich & M.S. Christ.
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tremella coppinsii Diederich & G. Marson
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tremella hypogymniae Diederich & M.S. Christ.
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tremella lichenicola Diederich
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tremella phaeophysciae Diederich & M.S. Christ.
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tremella ramalinae Diederich
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tremolecia atrata (Ach.) Hertel
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- Species: Trichonectria anisospora (Lowen) Van den Boom & Diederich
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Trichonectria hirta (Bloxam) Petch
- Remark:
- Fungus type: lichenicolous
- Treatment in Estonia: certain
- Species: Tuckermannopsis chlorophylla (Willd.) Hale
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- ääris-oksasamblik
- Species: Umbilicaria cinerascens (Arnold) Frey
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- tuhk-kõrvsamblik
- Species: Umbilicaria cylindrica (L.) Delise ex Duby
- Remark:
- Fungus type: lichenized
- Treatment in Estonia: certain
- rips-kõrvsamblik