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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1351 | Callopisma luteoalbum var. calcicola | auct. brit. p.max.p. | No | Caloplaca marmorata | 264 | LC | ||||
| 1352 | Callopisma ochraceum | (Schaer.) A. Massal. | No | Caloplaca ochracea | 272 | LC NS Sc | ||||
| 1353 | Callopisma phloginum | (Ach.) Arnold (1870) | No | Caloplaca phlogina | 2317 | NE ?NS | ||||
| 1354 | Callopisma pyraceum | auct. brit. p.p., non (Ach.) Arnold | No | Caloplaca holocarpa s. lat. | 261 | name or specific epithet valid but has been misused in the past | LC | |||
| 1355 | Callopisma pyraceum | auct. brit. p.p., non (Ach.) Arnold | No | Caloplaca oasis | 2461 | name or specific epithet valid but has been misused in the past | LC | |||
| 1356 | Callopisma rupestre | (Scop.) Walt. Watson | No | Protoblastenia rupestris | 1189 | LC | ||||
| 1357 | Callopisma rupestre f. incrustans | (DC.) Walt. Watson | No | Protoblastenia incrustans | 1188 | LC | ||||
| 1358 | Callopisma rupestre var. calvum | (Dicks.) Walt. Watson | No | Protoblastenia calva | 1186 | LC | ||||
| 1359 | Callopisma tetrastichum | (Nyl.) Walt. Watson | No | Caloplaca ochracea | 272 | LC NS Sc | ||||
| 1360 | Callopisma vitellinulum | auct. brit. p.max.p. | No | Caloplaca | several Caloplaca spp. with a yellow thallus, name or specific epithet valid but has been misused in the past | |||||
| 1361 | Calogaya arnoldii | (Wedd.) Arup, Frödén & Søchting (2013) | No | Caloplaca arnoldii subsp. oblitterata | 236 | LC | ||||
| 1362 | Calogaya decipiens | (Arnold) Arup, Frödén & Søchting (2013) | No | Caloplaca decipiens | 250 | LC | ||||
| 1363 | Caloplaca ahtii | Søchting (1994) | Yes | Caloplaca ahtii | 2318 | DD NR P Sc | Caloplaca ahtii | |||
| 1364 | Caloplaca albolutescens | (Nyl.) H. Olivier (1909) | Yes | Caloplaca albolutescens | Caloplaca teicholyta auct. brit. p.p.; Kuettlingeria albolutescens; Pyrenodesmia albolutescens | 2503 | LC NS | Caloplaca albolutescens | ||
| 1365 | Caloplaca alociza | (A. Massal.) Mig. (1925) | Yes | Caloplaca alociza | Caloplaca variabilis f. acrustacea; Pyrenodesmia alociza | 233 | LC NS | Caloplaca alociza | ||
| 1366 | Caloplaca alstrupii | Søchting (1999) | Yes | Caloplaca alstrupii | 2612 | Caloplaca alstrupii | ||||
| 1367 | Caloplaca ammiospila | auct. brit. | No | Caloplaca cinnamomea | 1746 | EN D NR Sc | ||||
| 1368 | Caloplaca ammiospila | (Wahlenb.) H. Olivier | No | incorrectly reported from the British Isles | ||||||
| 1369 | Caloplaca approximata | (Lynge) H. Magn. (1946) | Yes | Caloplaca approximata | Amundsenia approximata | 1591 | NT NR Sc | Caloplaca approximata | ||
| 1370 | Caloplaca aractina | (Fr.) Häyrén (1914) | Yes | Caloplaca aractina | Caloplaca viridirufa; Pyrenodesmia aractina; Sanguineodiscus aractinus | 234 | VU D2 NR P Eng | Caloplaca aractina | ||
| 1371 | Caloplaca arcis | (Poelt & Vězda) Arup (2006) | Yes | Caloplaca arcis | Caloplaca citrina auct. p.p.; Flavoplaca arcis | 2442 | LC NS | Caloplaca arcis | ||
| 1372 | Caloplaca arenaria | (Pers.) Müll. Arg. (1862) | Yes | Caloplaca arenaria | Caloplaca lamprocheila; Caloplaca subpallida; Rufoplaca arenaria | 235 | LC NS | Caloplaca arenaria | ||
| 1373 | Caloplaca arnoldii | auct. brit. | No | Caloplaca arnoldii subsp. oblitterata | 236 | LC | ||||
| 1374 | Caloplaca arnoldii subsp. obliterata | (Pers.) Gaya (2009) [orthogr. error] | No | Caloplaca arnoldii subsp. oblitterata | 236 | orthographic error | LC | |||
| 1375 | Caloplaca arnoldii subsp. oblitterata | (Pers.) Gaya (2009) | Yes | Caloplaca arnoldii subsp. oblitterata | Calogaya arnoldii | 236 | LC | Caloplaca arnoldii subsp. oblitterata | ||
| 1376 | Caloplaca asserigena | (J. Lahm) Della Torre & Sarnth. (1902) | Yes | Caloplaca asserigena | 2371 | LC NS | Caloplaca asserigena | |||
| 1377 | Caloplaca atroflava | (Turner) Mong. (1914) | Yes | Caloplaca atroflava | Kuettlingeria atroflava; Pyrenodesmia atroflava | 237 | CR D NR P Wa | Caloplaca atroflava | ||
| 1378 | Caloplaca atroflava var. submersa | (Nyl.) H. Magn. | No | ? Caloplaca atroflava | ||||||
| 1379 | Caloplaca aurantia | (Pers.) Hellb. (1890) | Yes | Caloplaca aurantia | Klauderuiella aurantia; Variospora aurantia | 239 | LC | Caloplaca aurantia | ||
| 1380 | Caloplaca aurantia var. heppiana | (Müll. Arg.) Poelt (1954) | No | Caloplaca flavescens | 259 | LC |