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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 8251 | Thelidium calcivorum | auct. brit. | No | Thelidium incavatum | 1389 | LC | ||||
| 8252 | Thelidium cataractarum | (Hepp) Lönnr., et auct. brit. p.p. | No | Thelidium fontigenum | 1900 | LC NR Sc | ||||
| 8253 | Thelidium cataractarum | auct. brit. p.p. | No | Thelidium minutulum | 1391 | LC | ||||
| 8254 | Thelidium cataractarum | auct. brit. p.p. | No | Thelidium zwackhii | 1392 | LC NS | ||||
| 8255 | Thelidium cataractarum | No | 1384 | BLS number no longer used | ||||||
| 8256 | Thelidium decipiens | (Nyl.) Kremp. (1861) | Yes | Thelidium decipiens | 1385 | LC | Thelidium decipiens | |||
| 8257 | Thelidium dionantense | (Hue) Zahlbr. (1921) | Yes | Thelidium dionantense | 2844 | NE NR | Thelidium dionantense | |||
| 8258 | Thelidium elaeinum | (Borrer) Mudd | No | Verrucaria elaeina | 1871 | LC | ||||
| 8259 | Thelidium epipolytropum | Mudd | No | Cercidospora epipolytropa | 2025 | LC NS | LF | |||
| 8260 | Thelidium exile | Arnold | No | Thelidium minutulum | 1391 | LC | ||||
| 8261 | Thelidium explicatum | (Stirt.) Wheldon & A. Wilson | No | Thelidium pyrenophorum | 1395 | LC NS | ||||
| 8262 | Thelidium fontigenum | A. Massal. (1856) | Yes | Thelidium fontigenum | Thelidium microbolum Thelidium cataractarum |
1900 | LC NR Sc | Thelidium fontigenum | ||
| 8263 | Thelidium fumidum | (Nyl.) Hazsl. (1884) | Yes | Thelidium fumidum | Thelidium auruntii auct. brit. | 1386 | NT NR | Thelidium fumidum | ||
| 8264 | Thelidium hospitum | Arnold (1882) | No | Thelidium minutulum | 1391 | LC | ||||
| 8265 | Thelidium immersum | (Leight.) Mudd (1861) | No | Thelidium decipiens | 1385 | LC | ||||
| 8266 | Thelidium impressum | (Müll. Arg.) Zschacke (1920) | No | Parabagliettoa impressa | 1388 | LC NS | ||||
| 8267 | Thelidium incavatum | Mudd (1861) | Yes | Thelidium incavatum | 1389 | LC | Thelidium incavatum | |||
| 8268 | Thelidium margaceum | Zschacke | No | ? Thelidium minutulum | ||||||
| 8269 | Thelidium marinum | (Deakin) Keissl. | No | Stigmidium marinum | 2229 | LC NR | LF | |||
| 8270 | Thelidium mesotropum | (Nyl.) A.L. Sm. | No | Thelidium minutulum | 1391 | LC | ||||
| 8271 | Thelidium methorium | (Nyl.) Hellb. (1875) | Yes | Thelidium methorium | Thelidium aeneovinosum | 1729 | DD NR | Thelidium methorium | ||
| 8272 | Thelidium microb | No | 1901 | BLS number no longer used | ||||||
| 8273 | Thelidium microbolum | (Tuck.) Hasse (1913) | No | Thelidium fontigenum | 1900 | LC NR Sc | ||||
| 8274 | Thelidium microcarpum | (Davies ex Leight.) A.L. Sm. | No | Thelidium zwackhii | 1392 | LC NS | ||||
| 8275 | Thelidium minimum | (A. Massal.) Arnold | No | incorrectly reported from the British Isles | ||||||
| 8276 | Thelidium minutulum | Körb. (1863) | Yes | Thelidium minutulum | Thelidium cataractarum auct. p.p. Thelidium mesotropum |
1391 | LC | Thelidium minutulum | ||
| 8277 | Thelidium nylanderi | (Hepp) Lönnr. | No | Collemopsidium caesium | 79 | NT NR Sc | ||||
| 8278 | Thelidium papulare f. papulare | (Fr.) Arnold (1885) | Yes | Thelidium papulare f. papulare | 1394 | LC | Thelidium papulare f. papulare | |||
| 8279 | Thelidium papulare f. sorediatum | Coppins (1991) | Yes | Thelidium papulare f. sorediatum | 1811 | LC NR Sc | Thelidium papulare f. sorediatum | |||
| 8280 | Thelidium parvulum | Arnold, non auct. brit. | No | Thelidium minutulum | 1391 | LC |