For more information see the Supplementary Notes for the Taxon Dictionary, which explains the names and synonyms, and these Instructions on how to use the online Taxon Dictionary which includes details of the Conservation Evaluation codes.
| Count | Name | Authority | Is Current Name? | Current Taxon Name | Synonyms | BLS Number | Comments | Conservation Evaluation | Group | Account & Map |
|---|---|---|---|---|---|---|---|---|---|---|
| 8401 | Tremella occultixanthoriae | Diederich, Geyselings & Millanes (2022) | Yes | Tremella occultixanthoriae | 2887 | on underside of Xanthoria parietina | NE NR | LF | Tremella occultixanthoriae | |
| 8402 | Tremella parietinae | Freire-Rallo, Diederich, Millanes & Wedin (2023) | Yes | Tremella parietinae | 2896 | on Xanthoria parietina | NE NR | LF | Tremella parietinae | |
| 8403 | Tremella parmeliarum | Diederich (1996) | Yes | Tremella parmeliarum | 2640 | lichenicolous on Parmotrema reticulatum | NE NR | LF | Tremella parmeliarum | |
| 8404 | Tremella pertusae | Diederich, Millanes, Brackel & Etayo (2022) | Yes | Tremella pertusae | 2828 | on Pertusaria pertusa | NE NR | LF | Tremella pertusae | |
| 8405 | Tremella pertusariae | Diederich (1996) | Yes | Tremella pertusariae | 2251 | NE NR | LF | Tremella pertusariae | ||
| 8406 | Tremella phaeographidis | Diederich, Coppins & Bandoni (1996) | Yes | Tremella phaeographidis | 2252 | NE NR | LF | Tremella phaeographidis | ||
| 8407 | Tremella phaeophysciae | Diederich & M.S. Christ. (1996) | Yes | Tremella phaeophysciae | 2253 | LC NR | LF | Tremella phaeophysciae | ||
| 8408 | Tremella protoparmeliae | Diederich & Coppins (1996) | Yes | Tremella protoparmeliae | 2254 | in hymenium of Protoparmelia badia | NE NR | LF | Tremella protoparmeliae | |
| 8409 | Tremella ramalinae | Diederich (1996) | Yes | Tremella ramalinae | 2615 | NE | LF | Tremella ramalinae | ||
| 8410 | Tremella rhizocarpicola | Diederich, Millanes & Wedin (2014) | Yes | Tremella rhizocarpicola | 2684 | in hymenium of Rhizocarpon lavatum | NE NR | LF | Tremella rhizocarpicola | |
| 8411 | Tremella tubulosae | Diederich, Coppins, J.C. Zamora, Millanes & Wedin (2020) | Yes | Tremella tubulosae | 2785 | on Hypogymnia tubulosa | NE NR | LF | Tremella tubulosae | |
| 8412 | Tremella tuckerae | Diederich (2007) | Yes | Tremella tuckerae | 2478 | NE NR | LF | Tremella tuckerae | ||
| 8413 | Tremolecia atrata | (Ach.) Hertel (1977) | Yes | Tremolecia atrata | Lecidea dicksonii | 1438 | LC | Tremolecia atrata | ||
| 8414 | Tremolecia jurana | (Schaer.) Hertel | No | Farnoldia jurana | 863 | LC NS | ||||
| 8415 | Trichia furfuracea | (L.) With. (1801) | No | Coniocybe furfuracea | 466 | LC | ||||
| 8416 | Trichoconis lichenicola | D. Hawksw. (1980) | Yes | Trichoconis lichenicola | 2255 | LF | Trichoconis lichenicola | |||
| 8417 | Trichonectria aculeata | Kirschst. | No | Trichonectria hirta | 2256 | NE NR | LF | |||
| 8418 | Trichonectria anisospora | (Lowen) van den Boom & Diederich | No | Pronectria anisospora | 2171 | LC NS | LF | |||
| 8419 | Trichonectria hirta | (A. Bloxam) Petch (1937) | Yes | Trichonectria hirta | 2256 | NE NR | LF | Trichonectria hirta | ||
| 8420 | Trichonectria pertusariae | Etayo & van den Boom (2005) | Yes | Trichonectria pertusariae | 2699 | parasitic on Pertusaria (Lepra) spp. | NE NR | LF | Trichonectria pertusariae | |
| 8421 | Trichonectria rubefaciens | (Ellis & Everh.) Diederich & Schroers (1999) | No | Nectriopsis rubefaciens | 2126 | NE NR | LF | |||
| 8422 | Trichosphaeria lichenum | P. Karst. & Har. (1890) | Yes | Trichosphaeria lichenum | 2712 | lichenicolous on Peltigera; probably belongs in Niesslia | LF | Trichosphaeria lichenum | ||
| 8423 | Trichothecium roseum | (Pers.) Link (1809) | Yes | Trichothecium roseum | 2257 | NE ? | LF | Trichothecium roseum | ||
| 8424 | Trichothelium aeneum | (Wallr.) R.C. Harris | No | Porina aenea | 1168 | LC | ||||
| 8425 | Trichothelium chloroticum | (Ach.) R.C. Harris | No | Porina chlorotica f. chlorotica | 1171 | LC | ||||
| 8426 | Trichothelium guentheri | (Flot.) R.C. Harris | No | Porina guentheri var. guentheri | 1174 | LC NS | ||||
| 8427 | Trichothelium lineare | (Leight.) R.C. Harris | No | Porina linearis | 1182 | LC | ||||
| 8428 | Trichothyrina cetrariicola | (Nyl.) D. Hawksw. | No | Lichenopeltella cetrariicola | 2098 | NE NR | LF | |||
| 8429 | Trimmatostroma vandenboomii | Diederich (2024) | Yes | Trimmatostroma vandenboomii | 2903 | NE NR | LF | Trimmatostroma vandenboomii | ||
| 8430 | Trimmatothele perquisita | (Norman) Norman ex Zahlbr. (1903) | Yes | Trimmatothele perquisita | Verrucaria perquisita | 1439 | DD NR Sc | Trimmatothele perquisita |