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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7411 | Rhizocarpon alboatrum var. epipolium | auct. p.p. | No | Diplotomma alboatrum | 496 | LC | ||||
| 7412 | Rhizocarpon alboatrum var. epipolium | (Ach.) A.L. Sm. | No | Diplotomma hedinii | 498 | LC NS | ||||
| 7413 | Rhizocarpon alboatrum var. venustum | auct. brit. p.max.p. | No | Diplotomma alboatrum | 496 | LC | ||||
| 7414 | Rhizocarpon alboatrum var. venustum | auct. brit. p.min.p. | No | Diplotomma hedinii | 498 | LC NS | ||||
| 7415 | Rhizocarpon alpicola | (Anzi) Rabenh. (1861) | Yes | Rhizocarpon alpicola | 1245 | LC NS | Rhizocarpon alpicola | |||
| 7416 | Rhizocarpon amphibium | (Fr.) Th. Fr. (1874) | Yes | Rhizocarpon amphibium | Rehmia amphibia | 1683 | DD NR Sc | Rhizocarpon amphibium | ||
| 7417 | Rhizocarpon anaperum | (Vain.) Vain. (1922) | Yes | Rhizocarpon anaperum | Rehmia anapera | 1099 | LC NR Sc | Rhizocarpon anaperum | ||
| 7418 | Rhizocarpon atlanticum | I.M. Lamb (1940) | No | Rhizocarpon richardii | 1250 | LC | ||||
| 7419 | Rhizocarpon atroalbescens | (Nyl.) Zahlbr. (1926) | Yes | Rhizocarpon atroalbescens | Rhizocarpon eupetraeoides auct. | 1253 | DD NR Sc | Rhizocarpon atroalbescens | ||
| 7420 | Rhizocarpon badioatrum | (Flörke ex Spreng.) Th. Fr. (1874) | Yes | Rhizocarpon badioatrum | 1246 | LC NS Sc | Rhizocarpon badioatrum | |||
| 7421 | Rhizocarpon caeruleoalbum | (Kremp.) Zahlbr. (1926) [1927] | Yes | Rhizocarpon caeruleoalbum | Rehmia caeruleoalba | 1247 | DD NR Sc | Rhizocarpon caeruleoalbum | ||
| 7422 | Rhizocarpon caesium | Fryday (2002) | Yes | Rhizocarpon caesium | Poeltinula caesia; Rhizocarpon expallescens auct. | 968 | DD NS Sc | Rhizocarpon caesium | ||
| 7423 | Rhizocarpon calcareum | (Fr.) Anzi (1860) | No | Rhizocarpon umbilicatum | 1279 | LC | ||||
| 7424 | Rhizocarpon chioneum | (Norman) Th. Fr. (1874) | Yes | Rhizocarpon chioneum | Rehmia chionea | 1248 | DD NR Sc | Rhizocarpon chioneum | ||
| 7425 | Rhizocarpon chlorophaeum | (Hepp ex Leight.) Müll. Arg. (1872) | No | Diplotomma chlorophaeum | 497 | LC | ||||
| 7426 | Rhizocarpon cinereonigrum | Vain. (1922) | Yes | Rhizocarpon cinereonigrum | 1274 | DD NR Sc | Rhizocarpon cinereonigrum | |||
| 7427 | Rhizocarpon cinereovirens | (Müll. Arg.) Vain. (1922) | Yes | Rhizocarpon cinereovirens | Rehmia cinereovirens | 1800 | DD NR Sc M* | Rhizocarpon cinereovirens | ||
| 7428 | Rhizocarpon colludens | sensu Fryday (1996) | No | Rhizocarpon hochstetteri | 1262 | LC | ||||
| 7429 | Rhizocarpon colludens | No | 1268 | BLS number no longer used | ||||||
| 7430 | Rhizocarpon colludens var. rufoatrum | sensu Fryday (1996) | No | Rhizocarpon hochstetteri | 1262 | Rhizocarpon hochstetteri [stictic acid-containing race] | LC | |||
| 7431 | Rhizocarpon concentricum | auct., ? non (Davies) Beltr. | No | Rhizocarpon petraeum | 1249 | LC | ||||
| 7432 | Rhizocarpon concentricum var. excentricum | (Ach.) P. Syd. (1887) | No | Rhizocarpon petraeum | 1249 | LC | ||||
| 7433 | Rhizocarpon confervoides | auct. brit. p.min.p. | No | Rhizocarpon lavatum | 1264 | LC | ||||
| 7434 | Rhizocarpon confervoides | auct. brit. p.max.p. | No | Rhizocarpon reductum | 1266 | LC | ||||
| 7435 | Rhizocarpon constrictum | Malme (1919) | No | Rhizocarpon richardii | 1250 | LC | ||||
| 7436 | Rhizocarpon copelandii | (Körb.) Th. Fr. (1874) | Yes | Rhizocarpon copelandii | 1845 | DD NR Sc | Rhizocarpon copelandii | |||
| 7437 | Rhizocarpon crystalligenum | Lynge | No | Rhizocarpon superficiale | 1277 | DD NR Sc | ||||
| 7438 | Rhizocarpon cyclodes | Hellb. (1874) | No | Rhizocarpon copelandii | 1845 | DD NR Sc | ||||
| 7439 | Rhizocarpon disporum | auct. brit., non (Nägeli ex Hepp) Müll. Arg. | No | Rhizocarpon geminatum | 1256 | DD NS | ||||
| 7440 | Rhizocarpon disporum | (Nägeli ex Hepp) Müll. Arg. | No | incorrectly reported from the British Isles |