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 sarcopisioides | (Körb.) Zahlbr. (1901) [orth. error] | No | Caloplaca obscurella | 271 | orth. error | LC | |||
| 1502 | Caloplaca sarcopisoides | (Körb.) Zahlbr. (1910) [orth. error] | No | Caloplaca obsscurella | 271 | orth. error | LC | |||
| 1503 | Caloplaca saxicola | (Hoffm.) Nordin (1972) | Yes | Caloplaca saxicola | Caloplaca murorum | 277 | LC | Caloplaca saxicola | ||
| 1504 | Caloplaca schaereri | (Flörke ex Arnold) Zahlbr. (1890) | No | Caloplaca dalmatica | 285 | LC | ||||
| 1505 | Caloplaca scopularis | (Nyl.) Lettau (1912) | Yes | Caloplaca scopularis | Athallia scopularis | 278 | NT NS | Caloplaca scopularis | ||
| 1506 | Caloplaca sol | Orange (2018) | Yes | Caloplaca sol | 2707 | NE NR | Caloplaca sol | |||
| 1507 | Caloplaca soralifera | Vondrák & Hrouzek (2006) | Yes | Caloplaca soralifera | Kuettlingeria soralifera | 2460 | DD NR | Caloplaca soralifera | ||
| 1508 | Caloplaca sorediella | Arup (2006) | Yes | Caloplaca sorediella | 2459 | LC NR | Caloplaca sorediella | |||
| 1509 | Caloplaca stillicidiorum | (Vahl) Lynge (1921) | Yes | Caloplaca stillicidiorum | 1991 | LC NS | Caloplaca stillicidiorum | |||
| 1510 | Caloplaca suaedae | O.L. Gilbert & Coppins (2001) | Yes | Caloplaca suaedae | 2321 | NT NR IR | Caloplaca suaedae | |||
| 1511 | Caloplaca subpallida | H. Magn. | No | Caloplaca arenaria | 235 | [but some authors believe two separate species may be involved] | LC NS | |||
| 1512 | Caloplaca teicholyta | auct. brit. p.p. [mainly records from northern Britain] | No | Caloplaca albolutescens | 2503 | name or specific epithet valid but has been misused in the past | LC NS | |||
| 1513 | Caloplaca teicholyta | (Ach.) J. Steiner (1895) | Yes | Caloplaca teicholyta | Caloplaca erythrocarpa | 281 | LC | Caloplaca teicholyta | ||
| 1514 | Caloplaca tetrasticha | (Nyl.) H. Olivier | No | Caloplaca ochracea | 272 | LC NS Sc | ||||
| 1515 | Caloplaca thallincola | (Wedd.) Du Rietz (1921) | Yes | Caloplaca thallincola | Klauderuiella thallincola; Variospora thallincola | 282 | LC | Caloplaca thallincola | ||
| 1516 | Caloplaca turkuensis | (Vain.) Zahlbr. (1931) | Yes | Caloplaca turkuensis | 2574 | |||||
| 1517 | Caloplaca turneriana | (Ach.) H. Olivier | No | Caloplaca atroflava | 237 | CR D NR P Wa | ||||
| 1518 | Caloplaca ulcerosa | Coppins & P. James (1979) | Yes | Caloplaca ulcerosa | 283 | LC | Caloplaca ulcerosa | |||
| 1519 | Caloplaca variabilis | (Pers.) Müll. Arg. (1862) | Yes | Caloplaca variabilis | Pyrenodesmia variabilis | 284 | LC | Caloplaca variabilis | ||
| 1520 | Caloplaca variabilis f. acrustacea | Müll. Arg. | No | Caloplaca alociza | 233 | LC NS | ||||
| 1521 | Caloplaca velana | (A. Massal.) Du Rietz | No | Caloplaca dalmatica | 285 | LC | ||||
| 1522 | Caloplaca verruculifera | (Vain.) Zahlbr. (1931) | Yes | Caloplaca verruculifera | Caloplaca granulosa auct. p.p.; Polycauliona verruculifera; Verrucoplaca verruculifera | 286 | LC | Caloplaca verruculifera | ||
| 1523 | Caloplaca virescens | (Sm.) Coppins (1980) | Yes | Caloplaca virescens | 287 | EN A, C, D NS P Eng Sc | Caloplaca virescens | |||
| 1524 | Caloplaca viridirufa | auct. brit. | No | Caloplaca aractina | 234 | VU D2 NR P Eng | ||||
| 1525 | Caloplaca vitellinula | auct. p.max.p. | No | Caloplaca | several Caloplaca spp. with a yellow thallus, name or specific epithet valid but has been misused in the past | |||||
| 1526 | Caloplaca vitellinula | (Nyl.) H. Olivier (1897) | Yes | Caloplaca vitellinula | Athallia vitellinula | 2532 | NE NR | Caloplaca vitellinula | ||
| 1527 | Caloplaca xantholyta | (Nyl.) Jatta (1902) | Yes | Caloplaca xantholyta | Lepraria xantholyta Leproplaca xantholyta |
826 | LC | Caloplaca xantholyta | ||
| 1528 | Calothrix interrupta | Carmich. ex Hook., comb. inval., p.p. | No | Dictyonema coppinsii | 488 | DD NR Sc | ||||
| 1529 | Calvitimela aglaea | (Sommerf.) Hafellner (2001) | Yes | Calvitimela aglaea | Lecidea aglaea Tephromela aglaea |
693 | LC NS | Calvitimela aglaea | ||
| 1530 | Calvitimela armeniaca | (DC.) Hafellner (2001) | Yes | Calvitimela armeniaca | Lecidea armeniaca Tephromela armeniaca |
697 | LC NR Sc | Calvitimela armeniaca |