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 cerinum var. cyanoleprum | (DC.) A. Massal. (1856) | No | Caloplaca cerina | 241 | LC | ||||
| 1352 | Callopisma citrinum | (Hoffm.) A. Massal. (1852) | No | Caloplaca citrina | 247 | LC | ||||
| 1353 | Callopisma epixanthum | (Ach.) Mudd | No | Candelariella aurella f. aurella | 291 | LC | ||||
| 1354 | Callopisma ferrugineum | auct. | No | Blastenia ferruginea s. lat. | 2280 | |||||
| 1355 | Callopisma ferrugineum var. festivum | (Ach.) Mudd (1861) | No | Blastenia crenularia | 253 | LC | ||||
| 1356 | Callopisma luteoalbum | (Turner) A. Massal. (1852) | No | Cerothallia luteoalba | 266 | EN A2, C1 NS P Eng Sc Wa S8 | ||||
| 1357 | Callopisma luteoalbum var. calcicola | auct. brit. p.max.p. | No | Caloplaca marmorata | 264 | LC | ||||
| 1358 | Callopisma ochraceum | (Schaer.) A. Massal. | No | Caloplaca ochracea | 272 | LC NS Sc | ||||
| 1359 | Callopisma phloginum | (Ach.) Arnold (1870) | No | Caloplaca phlogina | 2317 | NE ?NS | ||||
| 1360 | Callopisma pyraceum | auct. brit. p.p., non (Ach.) Arnold | No | Athallia holocarpa s. lat. | 261 | name or specific epithet valid but has been misused in the past | LC | |||
| 1361 | Callopisma pyraceum | auct. brit. p.p., non (Ach.) Arnold | No | Flavoplaca oasis | 2461 | name or specific epithet valid but has been misused in the past | LC | |||
| 1362 | Callopisma rupestre | (Scop.) Walt. Watson | No | Protoblastenia rupestris | 1189 | LC | ||||
| 1363 | Callopisma rupestre f. incrustans | (DC.) Walt. Watson | No | Protoblastenia incrustans | 1188 | LC | ||||
| 1364 | Callopisma rupestre var. calvum | (Dicks.) Walt. Watson | No | Protoblastenia calva | 1186 | LC | ||||
| 1365 | Callopisma tetrastichum | (Nyl.) Walt. Watson | No | Caloplaca ochracea | 272 | LC NS Sc | ||||
| 1366 | 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 | |||||
| 1367 | Calogaya arnoldii | sensu auct. brit. | No | Caloplaca oblitterata | 236 | LC | ||||
| 1368 | Calogaya decipiens | (Arnold) Arup, Frödén & Søchting (2013) | Yes | Calogaya decipiens | Caloplaca decipiens | 250 | LC | |||
| 1369 | Calogaya oblitterata | (Pers.) P.F. Cannon & Coppins (2024) | Yes | Calogaya oblitterata | Caloplaca armoldii auct. brit.; Caloplaca arnoldii subsp. oblitterata | 236 | LC | |||
| 1370 | Calogaya pusilla | (A. Massal.) Arup, Frödén & Søchting (2013) | Yes | Calogaya pusilla | Caloplaca murorum auct. brit.; Caloplaca pusilla; Caloplaca saxicola auct. brit. | 277 | LC | |||
| 1371 | Caloplaca ahtii | Søchting (1994) | Yes | Caloplaca ahtii | 2318 | DD NR P Sc | Caloplaca ahtii | |||
| 1372 | Caloplaca albolutescens | (Nyl.) H. Olivier (1909) | No | Kuettlingeria albolutescens | 2503 | LC NS | Caloplaca albolutescens | |||
| 1373 | Caloplaca alociza | (A. Massal.) Mig. (1925) | No | Pyrenodesmia alociza | 233 | LC NS | Caloplaca alociza | |||
| 1374 | Caloplaca alstrupii | Søchting (1999) | Yes | Caloplaca alstrupii | 2612 | Caloplaca alstrupii | ||||
| 1375 | Caloplaca ammiospila | (Wahlenb.) H. Olivier (1909) | No | Blastenia ammiospila | 1746 | EN D NR Sc | ||||
| 1376 | Caloplaca ammiospila | (Wahlenb.) H. Olivier | No | incorrectly reported from the British Isles | ||||||
| 1377 | Caloplaca approximata | (Lynge) H. Magn. (1946) | No | Amundsenia approximata | 1591 | NT NR Sc | Caloplaca approximata | |||
| 1378 | Caloplaca aractina | (Fr.) Häyrén (1914) | Yes | Caloplaca aractina | Caloplaca viridirufa; Pyrenodesmia aractina; Sanguineodiscus aractinus | 234 | VU D2 NR P Eng | Caloplaca aractina | ||
| 1379 | Caloplaca arcis | (Poelt & Vězda) Arup (2006) | No | Flavoplaca arcis | 2442 | LC NS | Caloplaca arcis | |||
| 1380 | Caloplaca arenaria | (Pers.) Müll. Arg. (1862) | No | Rufoplaca arenaria | 235 | LC NS | Caloplaca arenaria |