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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7501 | Rhizocarpon soreumidium | (Stirt.) A.L. Sm. | No | Diplotomma alboatrum | 496 | LC | ||||
| 7502 | Rhizocarpon subgeminatum | Eitner (1911) [1910] | Yes | Rhizocarpon subgeminatum | 1276 | LC NS | Rhizocarpon subgeminatum | |||
| 7503 | Rhizocarpon sublavatum | Fryday (2000) | Yes | Rhizocarpon sublavatum | 1117 | LC NR Sc | Rhizocarpon sublavatum | |||
| 7504 | Rhizocarpon submodestum | (Vain.) Vain. (1922) | Yes | Rhizocarpon submodestum | 1387 | DD NR Sc | Rhizocarpon submodestum | |||
| 7505 | Rhizocarpon subpostumum | (Nyl.) Arnold (1877) | Yes | Rhizocarpon subpostumum | Rehmia subpostuma | 1214 | DD NR Sc | Rhizocarpon subpostumum | ||
| 7506 | Rhizocarpon superficiale | (Schaer.) Malme (1914) | Yes | Rhizocarpon superficiale | 1277 | DD NR Sc | Rhizocarpon superficiale | |||
| 7507 | Rhizocarpon superficiale subsp. boreale | Runemark | No | Rhizocarpon superficiale | 1277 | DD NR Sc | ||||
| 7508 | Rhizocarpon timdalii | Ihlen & Fryday (2002) | Yes | Rhizocarpon timdalii | Rehmia timdalii | 2335 | DD NR | Rhizocarpon timdalii | ||
| 7509 | Rhizocarpon tinei subsp. arcticum | Runemark | No | Rhizocarpon geographicum | 1257 | LC | ||||
| 7510 | Rhizocarpon tinei subsp. diabasicum | (Räsänen) Runemark | No | Rhizocarpon geographicum | 1257 | LC | ||||
| 7511 | Rhizocarpon tinei subsp. prospectans | (Räsänen) Runemark | No | Rhizocarpon geographicum | 1257 | LC | ||||
| 7512 | Rhizocarpon tinei subsp. vulgare | Runemark | No | Rhizocarpon geographicum | 1257 | LC | ||||
| 7513 | Rhizocarpon transiens | Eitner | No | incorrectly reported from the British Isles | ||||||
| 7514 | Rhizocarpon umbilicatum | (Ramond) Flagey (1894) | Yes | Rhizocarpon umbilicatum | Rehmia umbilicata; Rhizocarpon calcareum | 1279 | LC | Rhizocarpon umbilicatum | ||
| 7515 | Rhizocarpon viridiatrum | (Wulfen) Körb. (1855) | Yes | Rhizocarpon viridiatrum | 1280 | LC NS | Rhizocarpon viridiatrum | |||
| 7516 | Rhizomorpha dichotoma | Sowerby | No | name of uncertain application {?F} | F | |||||
| 7517 | Rhizomorpha spinosa | Ach. | No | name of uncertain application {?F} | F | |||||
| 7518 | Rhizonema interruptum | (Carmich. ex Hook.) Thwaites, comb. inval., p.p. | No | Dictyonema coppinsii | 488 | DD NR Sc | ||||
| 7519 | Rhymbocarpus cruciatus | (Sherwood, D. Hawksw. & Coppins) Etayo & Diederich (2000) | Yes | Rhymbocarpus cruciatus | Skyttea cruciata | 2205 | lichenicolous on Dipoicia canescens | NE NR | LF | Rhymbocarpus cruciatus |
| 7520 | Rhymbocarpus elachistophorus | (Nyl.) Triebel (1989) | No | Skyttea elachistophora | 2206 | LF | ||||
| 7521 | Rhymbocarpus ericetorum | (Körb.) Etayo, Diederich & Ertz (2010) | Yes | Rhymbocarpus ericetorum | Gelatinopsis ericetorum | 2066 | lichenicolous on Dibaeis baeomyces | LC NR | LF | Rhymbocarpus ericetorum |
| 7522 | Rhymbocarpus gregarius | (Sherwood, D. Hawksw. & Coppins) Triebel | No | Skyttea gregaria | 2208 | LC | LF | |||
| 7523 | Rhymbocarpus neglectus | (Vain.) Diederich & Etayo (2000) | Yes | Rhymbocarpus neglectus | Llimoniella neglectaNesolechia neglecta | 2106 | lichenicolous on Lepraria spp. | NE NR | LF | Rhymbocarpus neglectus |
| 7524 | Rhymbocarpus pubescens | (Etayo & Diederich) Diederich & Etayo (2000) | Yes | Rhymbocarpus pubescens | Llimoniella pubescens | 2302 | lichenicolous on Lepraria lobificans | NE NR | LF | Rhymbocarpus pubescens |
| 7525 | Ricasolia amplissima | (Scop.) De Not. (1846) | Yes | Ricasolia amplissima | Dendriscocaulon umhausense; Lobaria amplissima; Polychidium umhausense | 855 | LC Sc L IR | Ricasolia amplissima | ||
| 7526 | Ricasolia glomulifera | (Lightf.) Nyl. (1855) | No | Ricasolia amplissima | 855 | LC Sc L IR | ||||
| 7527 | Ricasolia laetevirens | (Lightf.) Leight. (1871) | No | Ricasolia virens | 856 | LC Sc L IR | ||||
| 7528 | Ricasolia virens | (With.) H.H. Blom & Tønsberg (2016) | Yes | Ricasolia virens | Lobaria laetevirens; Lobaria virens | 856 | LC Sc L IR | Ricasolia virens | ||
| 7529 | Riccia auriformis | With. (1776) | No | Lathagrium auriforme | 433 | LC | ||||
| 7530 | Rimelia reticulata | (Taylor) Hale & A. Fletcher | No | Parmotrema reticulatum | 1012 | LC |