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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7291 | Ramalina thrausta | auct. brit. | No | Ramalina chondrina | 1696 | VU D2 NR | ||||
| 7292 | Ramalina thrausta | No | 1242 | BLS number no longer used | ||||||
| 7293 | Ramboldia insidiosa | (Th. Fr.) Hafellner (1995) | Yes | Ramboldia insidiosa | Lecidea insidiosa | 1741 | NT NR Sc | Ramboldia insidiosa | ||
| 7294 | Ramonia aff. luteola | Vezda | No | Karstenia rhopaloides | 456 | LC NS | ||||
| 7295 | Ramonia azorica | P. James & Purvis (1993) | No | Topeliopsis azorica | 2420 | EN D NR Sc | ||||
| 7296 | Ramonia calcicola | Canals & Gómez-Bolea (1992) | Yes | Ramonia calcicola | 2484 | DD NR | Ramonia calcicola | |||
| 7297 | Ramonia chrysophaea | (Pers.) Vězda (1966) | No | Karstenia chrysophaea | 1243 | NT NS P Eng Sc Wa IR | ||||
| 7298 | Ramonia dictyospora | Coppins (1987) | No | Karstenia dictyospora | 1574 | NT NS E P Eng Sc Wa IR | ||||
| 7299 | Ramonia interjecta | Coppins (1994) | No | Karstenia rhopaloides | 456 | LC NS | ||||
| 7300 | Ramonia melathelia | (Nyl.) Ertz (2021) | Yes | Ramonia melathelia | Thelopsis melathelia | 1407 | NT NR Sc | Ramonia melathelia | ||
| 7301 | Ramonia nigra | Coppins (1987) | No | Karstenia nigra | 1725 | CR D NR E Eng IR | ||||
| 7302 | Ramularia peltigericola | D. Hawksw. (1980) | No | Hawksworthiana peltigerae | 2069 | NE NR | LF | |||
| 7303 | Randlanea usneicola | Zhurb., Diederich & U. Braun (2023) | Yes | Randlanea usneicola | 2876 | NE NR | LF | Randlanea usneicola | ||
| 7304 | Raphiospora arenicola | Mudd (1861) | No | Arthrorhaphis grisea | 313 | LC NS | LF | |||
| 7305 | Raphiospora flavovirescens | A. Massal. (1853) | No | Arthrorhaphis citrinella | 100 | LC | ||||
| 7306 | Reconditella physconiarum | Hafellner & Matzer (1990) | Yes | Reconditella physconiarum | 2490 | NE NR | LF | Reconditella physconiarum | ||
| 7307 | Refractohilum achromaticum | (B. Sutton) D. Hawksw. (1997) | No | Gyalectiphila achromatica | 2485 | NE NR | LF | |||
| 7308 | Refractohilum galligenum | D. Hawksw. (1977) | Yes | Refractohilum galligenum | 2182 | NE NS | LF | Refractohilum galligenum | ||
| 7309 | Refractohilum peltigerae | (Keissl.) D. Hawksw. (1977) | No | Hawksworthiana peltigerae | 2069 | on Peltigera | NE NR | LF | Refractohilum peltigerae | |
| 7310 | Refractohilum pluriseptatum | Etayo & Cl. Roux (1997) | No | Gyalectiphila pluriseptata | 2183 | NE NR | LF | |||
| 7311 | Reichlingia anombrophila | (Coppins & P. James) Frisch (2020) | Yes | Reichlingia anombrophila | Arthonia anombrophila; Arthonia cinereopruinosa auct. brit. | 1588 | LC NS Sc IR | Reichlingia anombrophila | ||
| 7312 | Reichlingia dendritica | (Leight.) Ertz & Sanderson (2020) | Yes | Reichlingia dendritica | Arthonia atlantica; Arthonia atlantica var. positiva | 53 | NT NR P Eng Sc Wa IR | Reichlingia dendritica | ||
| 7313 | Reichlingia leopoldii | Diederich & Scheid. (1996) | Yes | Reichlingia leopoldii | 2386 | DD NR Sc | Reichlingia leopoldii | |||
| 7314 | Reichlingia zwackhii | (Sandst.) Frisch & G. Thor (2014) | Yes | Reichlingia zwackhii | Arthonia zwackhii | 74 | NT NR Sc | Reichlingia zwackhii | ||
| 7315 | Rhacodiopsis rupestris | (Pers.) Donk | No | Racodium rupestre | 1229 | LC | ||||
| 7316 | Rhagadostoma lichenicola | (De Not.) Keissl. (1930) | Yes | Rhagadostoma lichenicola | 2184 | lichenicolous on Solorina crocea | NE NR | LF | Rhagadostoma lichenicola | |
| 7317 | Rhagadostoma rugosum | Nav.-Ros. & Hladún (1994) | Yes | Rhagadostoma rugosum | 2185 | NE NR | LF | Rhagadostoma rugosum | ||
| 7318 | Rhagadostoma verrucariarum | Nav.-Ros. & Hladún (1994) | Yes | Rhagadostoma verrucariarum | 2802 | lichenicolous on Verrucaria s. lat. | NE NR | LF | Rhagadostoma verrucariarum | |
| 7319 | Rhaphidicyrtis trichosporella | (Nyl.) Vain. (1921) | Yes | Rhaphidicyrtis trichosporella | 1799 | LC NS | Rhaphidicyrtis trichosporella | |||
| 7320 | Rhexophiale rhexoblephara | (Nyl.) Hellb. (1875) | Yes | Rhexophiale rhexoblephara | Sagiolechia rhexoblephara | 1303 | NT NR Sc | Rhexophiale rhexoblephara |