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 | Reichlingia zwackhii | (Sandst.) Frisch & G. Thor (2014) | Yes | Reichlingia zwackhii | Arthonia zwackhii | 74 | NT NR Sc | Reichlingia zwackhii | ||
| 7412 | Rhacodiopsis rupestris | (Pers.) Donk | No | Racodium rupestre | 1229 | LC | ||||
| 7413 | Rhagadostoma lichenicola | (De Not.) Keissl. (1930) | Yes | Rhagadostoma lichenicola | 2184 | lichenicolous on Solorina crocea | NE NR | LF | Rhagadostoma lichenicola | |
| 7414 | Rhagadostoma rugosum | Nav.-Ros. & Hladún (1994) | No | Rhagadostoma rugosum | 2185 | Incorrectly reported from the British Isles | LF | Rhagadostoma rugosum | ||
| 7415 | Rhagadostoma verrucariarum | Nav.-Ros. & Hladún (1994) | Yes | Rhagadostoma verrucariarum | 2802 | lichenicolous on Verrucaria s. lat. | NE NR | LF | Rhagadostoma verrucariarum | |
| 7416 | Rhaphidicyrtis trichosporella | (Nyl.) Vain. (1921) | Yes | Rhaphidicyrtis trichosporella | 1799 | LC NS | Rhaphidicyrtis trichosporella | |||
| 7417 | Rhexophiale rhexoblephara | (Nyl.) Hellb. (1875) | Yes | Rhexophiale rhexoblephara | Sagiolechia rhexoblephara | 1303 | NT NR Sc | Rhexophiale rhexoblephara | ||
| 7418 | Rhizocarpon advenulum | (Leight.) Hafellner & Poelt (1976) | Yes | Rhizocarpon advenulum | Buellia advenula | 1956 | NE NR Sc | LF | Rhizocarpon advenulum | |
| 7419 | Rhizocarpon alboatrum | (Hoffm.) Anzi | No | Diplotomma alboatrum | 496 | LC | ||||
| 7420 | Rhizocarpon alboatrum var. epipolium | auct. p.p. | No | Diplotomma alboatrum | 496 | LC | ||||
| 7421 | Rhizocarpon alboatrum var. epipolium | (Ach.) A.L. Sm. | No | Diplotomma hedinii | 498 | LC NS | ||||
| 7422 | Rhizocarpon alboatrum var. venustum | auct. brit. p.max.p. | No | Diplotomma alboatrum | 496 | LC | ||||
| 7423 | Rhizocarpon alboatrum var. venustum | auct. brit. p.min.p. | No | Diplotomma hedinii | 498 | LC NS | ||||
| 7424 | Rhizocarpon alpicola | (Anzi) Rabenh. (1861) | Yes | Rhizocarpon alpicola | 1245 | LC NS | Rhizocarpon alpicola | |||
| 7425 | Rhizocarpon amphibium | (Fr.) Th. Fr. (1874) | Yes | Rhizocarpon amphibium | Rehmia amphibia | 1683 | DD NR Sc | Rhizocarpon amphibium | ||
| 7426 | Rhizocarpon anaperum | (Vain.) Vain. (1922) | Yes | Rhizocarpon anaperum | Rehmia anapera | 1099 | LC NR Sc | Rhizocarpon anaperum | ||
| 7427 | Rhizocarpon atlanticum | I.M. Lamb (1940) | No | Rhizocarpon richardii | 1250 | LC | ||||
| 7428 | Rhizocarpon atroalbescens | (Nyl.) Zahlbr. (1926) | Yes | Rhizocarpon atroalbescens | Rhizocarpon eupetraeoides auct. | 1253 | DD NR Sc | Rhizocarpon atroalbescens | ||
| 7429 | Rhizocarpon badioatrum | (Flörke ex Spreng.) Th. Fr. (1874) | Yes | Rhizocarpon badioatrum | 1246 | LC NS Sc | Rhizocarpon badioatrum | |||
| 7430 | Rhizocarpon caeruleoalbum | (Kremp.) Zahlbr. (1926) [1927] | Yes | Rhizocarpon caeruleoalbum | Rehmia caeruleoalba | 1247 | DD NR Sc | Rhizocarpon caeruleoalbum | ||
| 7431 | Rhizocarpon caesium | Fryday (2002) | Yes | Rhizocarpon caesium | Poeltinula caesia; Rhizocarpon expallescens auct. | 968 | DD NS Sc | Rhizocarpon caesium | ||
| 7432 | Rhizocarpon calcareum | (Fr.) Anzi (1860) | No | Rhizocarpon umbilicatum | 1279 | LC | ||||
| 7433 | Rhizocarpon chioneum | (Norman) Th. Fr. (1874) | Yes | Rhizocarpon chioneum | Rehmia chionea | 1248 | DD NR Sc | Rhizocarpon chioneum | ||
| 7434 | Rhizocarpon chlorophaeum | (Hepp ex Leight.) Müll. Arg. (1872) | No | Diplotomma chlorophaeum | 497 | LC | ||||
| 7435 | Rhizocarpon cinereonigrum | Vain. (1922) | Yes | Rhizocarpon cinereonigrum | 1274 | DD NR Sc | Rhizocarpon cinereonigrum | |||
| 7436 | Rhizocarpon cinereovirens | (Müll. Arg.) Vain. (1922) | Yes | Rhizocarpon cinereovirens | Rehmia cinereovirens | 1800 | DD NR Sc M* | Rhizocarpon cinereovirens | ||
| 7437 | Rhizocarpon colludens | sensu Fryday (1996) | No | Rhizocarpon hochstetteri | 1262 | LC | ||||
| 7438 | Rhizocarpon colludens | No | 1268 | BLS number no longer used | ||||||
| 7439 | Rhizocarpon colludens var. rufoatrum | sensu Fryday (1996) | No | Rhizocarpon hochstetteri | 1262 | Rhizocarpon hochstetteri [stictic acid-containing race] | LC | |||
| 7440 | Rhizocarpon concentricum | auct., ? non (Davies) Beltr. | No | Rhizocarpon petraeum | 1249 | LC |