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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1501 | Caloplaca pollinii | (A. Massal.) Jatta (1900) | No | Huneckia pollinii | 274 | Ex | Caloplaca pollinii | |||
| 1502 | Caloplaca polycarpa | auct. brit. | No | Flavoplaca oasis | 2461 | LC | ||||
| 1503 | Caloplaca polycarpa | (A. Massal.) Zahlbr. (1919) | No | Caloplaca polycarpa | 1244 | incorrectly reported from the British Isles | ||||
| 1504 | Caloplaca pusilla | auct. brit. | No | Calogaya pusilla | 277 | LC | ||||
| 1505 | Caloplaca pyracea | auct. brit. p.p. | No | Athallia holocarpa s. lat. | 261 | name or specific epithet valid but has been misused in the past | LC | |||
| 1506 | Caloplaca pyracea | auct. brit. p.p. | No | Flavoplaca oasis | 2461 | name or specific epithet valid but has been misused in the past | LC | |||
| 1507 | Caloplaca pyracea | (Ach.) Zwackh (1862) | No | Athallia pyracea | 2528 | LC ?NS | Caloplaca pyracea | |||
| 1508 | Caloplaca pyracea var. pyrithroma | (Ach.) Flagey (1888) | No | Athallia holocarpa s. lat. | 261 | LC | ||||
| 1509 | Caloplaca ruderum | (Malbr.) J.R. Laundon (1976) | No | Flavoplaca ruderum | 275 | LC | Caloplaca ruderum | |||
| 1510 | Caloplaca sarcopidoides | (Körb.) Zahlbr. (1910) | No | Caloplaca obscurella | 271 | LC | ||||
| 1511 | Caloplaca sarcopisioides | (Körb.) Zahlbr. (1901) [orth. error] | No | Caloplaca obscurella | 271 | orth. error | LC | |||
| 1512 | Caloplaca sarcopisoides | (Körb.) Zahlbr. (1910) [orth. error] | No | Caloplaca obsscurella | 271 | orth. error | LC | |||
| 1513 | Caloplaca saxicola | sensu auct. brit. | No | Calogaya pusilla | 277 | the true identity of C. saxicola is unclear | LC | Caloplaca saxicola | ||
| 1514 | Caloplaca schaereri | sensu auct. brit. | No | Flavoplaca itiana | 285 | LC | ||||
| 1515 | Caloplaca scopularis | (Nyl.) Lettau (1912) | No | Athallia scopularis | 278 | NT NS | Caloplaca scopularis | |||
| 1516 | Caloplaca sol | Orange (2018) | No | Flavoplaca sol | 2707 | NE NR | Caloplaca sol | |||
| 1517 | Caloplaca soralifera | Vondrák & Hrouzek (2006) | No | Kuettlingeria soralifera | 2460 | DD NR | Caloplaca soralifera | |||
| 1518 | Caloplaca sorediella | Arup (2006) | No | Haloplaca sorediella | 2459 | LC NR | Caloplaca sorediella | |||
| 1519 | Caloplaca stillicidiorum | (Vahl) Lynge (1921) | Yes | Caloplaca stillicidiorum | 1991 | LC NS | Caloplaca stillicidiorum | |||
| 1520 | Caloplaca suaedae | O.L. Gilbert & Coppins (2001) | No | Haloplaca suaedae | 2321 | NT NR IR | Caloplaca suaedae | |||
| 1521 | Caloplaca subpallida | H. Magn. (1945) | No | Rufoplaca subpallida | 2895 | some records probably refer to Rufoplaca arenaria | NE | |||
| 1522 | Caloplaca teicholyta | auct. brit. p.p. [mainly records from northern Britain] | No | Kuettlingeria albolutescens | 2503 | name or specific epithet valid but has been misused in the past | LC NS | |||
| 1523 | Caloplaca teicholyta | (Ach.) J. Steiner (1895) | No | Kuettlingeria teicholyta | 281 | LC | Caloplaca teicholyta | |||
| 1524 | Caloplaca tetrasticha | (Nyl.) H. Olivier | No | Caloplaca ochracea | 272 | LC NS Sc | ||||
| 1525 | Caloplaca thallincola | (Wedd.) Du Rietz (1921) | Yes | Caloplaca thallincola | Klauderuiella thallincola; Variospora thallincola | 282 | LC | Caloplaca thallincola | ||
| 1526 | Caloplaca turkuensis | (Vain.) Zahlbr. (1931) | Yes | Caloplaca turkuensis | 2574 | |||||
| 1527 | Caloplaca turneriana | (Ach.) H. Olivier (1909) | No | Kuettlingeria atroflava | 237 | CR D NR P Wa | ||||
| 1528 | Caloplaca ulcerosa | Coppins & P. James (1979) | No | Coppinsiella ulcerosa | 283 | LC | Caloplaca ulcerosa | |||
| 1529 | Caloplaca variabilis | (Pers.) Müll. Arg. (1862) | No | Pyrenodesmia variabilis | 284 | LC | Caloplaca variabilis | |||
| 1530 | Caloplaca variabilis f. acrustacea | Müll. Arg. (1862) | No | Pyrenodesmia alociza | 233 | LC NS |