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 | Toninia tristis | (Th. Fr.) Th. Fr. | No | incorrectly reported from the British Isles | ||||||
| 8402 | Toninia tumidula | (Sm.) Zahlbr. (1927) [1926] | No | Porpidinia tumidula | 1429 | Ex | ||||
| 8403 | Toninia turneri | (Leight.) H. Olivier (1911) | No | Toniniopsis aromatica | 1415 | LC | ||||
| 8404 | Toninia verrucariae | (Metzler ex Nyl.) Timdal (1992) | Yes | Toninia verrucariae | 2550 | NE NR | LF | Toninia verrucariae | ||
| 8405 | Toninia verrucarioides | (Nyl.) Timdal (1991) | No | Toniniopsis verrucarioides | 1418 | LC NS | ||||
| 8406 | Toniniopsis aromatica | (Sm.) Kistenich, Timdal, Bendiksby & S. Ekman (2018) | Yes | Toniniopsis aromatica | Toninia aromatica | 1415 | LC | Toniniopsis aromatica | ||
| 8407 | Toniniopsis bagliettoana | (A. Massal. & De Not.) Kistenich & Timdal (2021) | Yes | Toniniopsis bagliettoana | Bacidia bagliettoana; Bacidia muscorum | 158 | LC | Toniniopsis bagliettoana | ||
| 8408 | Toniniopsis coelestina | (Anzi) Kistenich, Timdal, Bendiksby & S. Ekman (2018) | Yes | Toniniopsis coelestina | Toninia coelestina; Toninia oribata | 1424 | VU D1, D2 NR Sc | Toniniopsis coelestina | ||
| 8409 | Toniniopsis coprodes | (Körb.) S. Ekman & Coppins | Yes | Toniniopsis coprodes | Bacidia coprodes | 2635 | NE NR | Toniniopsis coprodes | ||
| 8410 | Toniniopsis fusispora | (Hepp ex Körb.) Cl. Roux (2020) | Yes | Toniniopsis fusispora | Toninia fusispora | 1577 | LC NR Sc | Toniniopsis fusispora | ||
| 8411 | Toniniopsis inornata | (Nyl.) S. Ekman & Coppins (2021) | Yes | Toniniopsis inornata | Bacidia inornata | 2636 | NE NR | Toniniopsis inornata | ||
| 8412 | Toniniopsis mesoidea | (Nyl.) Timdal (2018) | Yes | Toniniopsis mesoidea | Toninia mesoidea | 1423 | LC NS | Toniniopsis mesoidea | ||
| 8413 | Toniniopsis separabilis | (Nyl.) Gerasimova & A. Beck (2021) | Yes | Toniniopsis separabilis | Bacidia affinis; Bacidia subincompta auct.; Toniniopsis subincompta auct. | 168 | VU C, D1 NS P Eng Sc | Toniniopsis separabilis | ||
| 8414 | Toniniopsis subincompta | auct. | No | Toniniopsis separablis | 168 | VU C, D1 NS P Eng Sc | ||||
| 8415 | Toniniopsis verrucarioides | (Nyl.) Kistenich, Timdal, Bendiksby & S. Ekman (2018) | Yes | Toniniopsis verrucarioides | Toninia cervina; Toninia kolax; Toninia verrucarioides | 1418 | LC NS | Toniniopsis verrucarioides | ||
| 8416 | Topeliopsis azorica | (P. James & Purvis) Coppins & Aptroot (2008) | Yes | Topeliopsis azorica | Ramonia azorica | 2420 | EN D NR Sc | Topeliopsis azorica | ||
| 8417 | Tornabea scutellifera | (With.) J.R. Laundon (1984) | Yes | Tornabea scutellifera | Tornabenia atlantica | 1430 | Ex | Tornabea scutellifera | ||
| 8418 | Tornabenia atlantica | (Ach.) Kurok. | No | Tornabea scutellifera | 1430 | Ex | ||||
| 8419 | Torula cyanescens | Kalchbr. | No | Kalchbrenneriella cyanescens | 2329 | LC | LF | |||
| 8420 | Trachylia stigonella | auct. brit., non (Ach.) Fr. | No | Acolium sessile | 1545 | LC NS | LF | |||
| 8421 | Trachylia tigillaris | (Ach.) Fr. | No | Calicium tigillare | 476 | NT NR Sc | ||||
| 8422 | Trachylia tympanella | (Ach.) Fr. | No | Calicium inquinans | 474 | LC | ||||
| 8423 | Trapejamesia corticola | (Coppins & P.James) S.Y. Kondr. (2022) | No | Trapelia corticola | 1581 | LC | ||||
| 8424 | Trapelia coarctata | (Sm.) M. Choisy (1932) | Yes | Trapelia coarctata | Lecidea coarctata | 1431 | LC | Trapelia coarctata | ||
| 8425 | Trapelia collaris | Orange (2018) | Yes | Trapelia collaris | 2709 | NE | Trapelia collaris | |||
| 8426 | Trapelia corticola | Coppins & P. James (1984) | Yes | Trapelia corticola | 1581 | LC | Trapelia corticola | |||
| 8427 | Trapelia elacista | (Ach.) Orange (2018) | Yes | Trapelia elacista | 2710 | NE | Trapelia elacista | |||
| 8428 | Trapelia glebulosa | sensu auct. brit. p.p. | No | Trapelia involuta s. str. | 2711 | LC | ||||
| 8429 | Trapelia glebulosa s. lat. | Yes | Trapelia glebulosa s. lat. | 1432 | LC | Trapelia glebulosa s. lat. | ||||
| 8430 | Trapelia glebulosa s. str. | (Sm.) J.R. Laundon (2005) | Yes | Trapelia glebulosa s. str. | Lecidea coarctata f. glebulosa | 2713 | LC | Trapelia glebulosa s. str. |