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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7591 | Rinodina umbrinofusca | (Nyl.) H. Olivier | No | Buellia aethalea | 200 | LC | ||||
| 7592 | Rinodina ventosa | (L.) Gray | No | Ophioparma ventosa | 556 | LC | ||||
| 7593 | Roccella fuciformis | (L.) DC. (1805) | Yes | Roccella fuciformis | 1301 | NT NS | Roccella fuciformis | |||
| 7594 | Roccella fucoides | Vain. | No | Roccella phycopsis | 1302 | NT NS | ||||
| 7595 | Roccella phycopsis | Ach. (1810) | Yes | Roccella phycopsis | Roccella fucoides | 1302 | NT NS | Roccella phycopsis | ||
| 7596 | Roccellographa circumscripta | (Leight.) Ertz & Tehler (2011) | Yes | Roccellographa circumscripta | Peterjamesia circumscripta Sclerophyton circumscriptum Sclerophytomyces circumscriptus | 1319 | LC | Roccellographa circumscripta | ||
| 7597 | Roccellographa sorediata | (Sparrius, P. James & M.A. Allen) Coppins & Fryday (2012) | No | Ingaderia sorediata | 2439 | LC NR | ||||
| 7598 | Roesleria pallida | auct. p.p. | No | Roesleria subterranea | Roesleria subterranea (Weinm.) Redhead (1985) | F | ||||
| 7599 | Roesleria pallida | (Pers.) Sacc. | No | Sclerophora pallida | 468 | VU C2, D1 NS P Eng Sc | ||||
| 7600 | Romjularia lurida | (Ach.) Timdal (2008) | Yes | Romjularia lurida | Lecidea lurida Psora lurida Psora petri |
1202 | LC | Romjularia lurida | ||
| 7601 | Ropalospora hibernica | (P. James & Poelt) Tønsberg (1993) | Yes | Ropalospora hibernica | Fuscidea hibernica | 1755 | DD NR Sc | Ropalospora hibernica | ||
| 7602 | Ropalospora lugubris f. lugubris | (Sommerf.) Poelt (1980) | Yes | Ropalospora lugubris f. lugubris | Fuscidea lugubris | 522 | LC NR | Ropalospora lugubris f. lugubris | ||
| 7603 | Ropalospora lugubris f. sorediata | Coppins & Fryday (2012) | Yes | Ropalospora lugubris f. sorediata | 293 | sorediate morph | NE | Ropalospora lugubris f. sorediata | ||
| 7604 | Ropalospora viridis | (Tønsberg) Tønsberg (1992) | Yes | Ropalospora viridis | Fuscidea viridis | 1624 | LC NS | Ropalospora viridis | ||
| 7605 | Roselliniella atlantica | Matzer & Hafellner (1990) | Yes | Roselliniella atlantica | Adelococcus groedensis | 2186 | NE NR | LF | Roselliniella atlantica | |
| 7606 | Roselliniella cladoniae | (Anzi) Matzer & Hafellner (1990) | Yes | Roselliniella cladoniae | Adelococcus cladoniae | 2187 | NE NR | LF | Roselliniella cladoniae | |
| 7607 | Roselliniella microthelia | (Wallr.) Nik. Hoffm. & Hafellner (2000) | Yes | Roselliniella microthelia | 2306 | NE NR | LF | Roselliniella microthelia | ||
| 7608 | Roselliniella nephromatis | (P. Crouan) Matzer & Hafellner (1990) | Yes | Roselliniella nephromatis | Adelococcus nephromatis | 2189 | NE NR | LF | Roselliniella nephromatis | |
| 7609 | Roselliniella stereocaulorum | Zhurb., Kukwa & Oset (2009) | Yes | Roselliniella stereocaulorum | 2866 | known in GBI only as hyphomycetous anamorph | NE NR | LF | Roselliniella stereocaulorum | |
| 7610 | Roselliniopsis gelidaria | (Mudd) Matzer (1993) | Yes | Roselliniopsis gelidaria | Polycoccum gelidaria | 2188 | NE NR | LF | Roselliniopsis gelidaria | |
| 7611 | Roselliniopsis tartaricola | (Nyl.) Matzer (1993) | Yes | Roselliniopsis tartaricola | Synaptospora tartaricola | 2190 | LC NS | LF | Roselliniopsis tartaricola | |
| 7612 | Roselliniopsis ventosa | (Rostr.) Alstrup (1994) | Yes | Roselliniopsis ventosa | 2493 | NE NR | LF | Roselliniopsis ventosa | ||
| 7613 | Rosellinula haplospora | (Th. Fr. & Almq.) R. Sant. (1986) | Yes | Rosellinula haplospora | 2333 | NE NR | LF | Rosellinula haplospora | ||
| 7614 | Rostania ceranisca | (Nyl.) Otálora, P.M. Jørg. & Wedin (2013) | Yes | Rostania ceranisca | Collema ceraniscum | 437 | VU D1, D2 NR Sc | Rostania ceranisca | ||
| 7615 | Rostania effusa | A. Košuth., M. Westb. & Wedin (2022) | Yes | Rostania effusa | 2814 | NE NR | Rostania effusa | |||
| 7616 | Rostania occultata | (Bagl.) Otálora, P.M. Jørg. & Wedin (2013) | Yes | Rostania occultata | Collema occultatum | 454 | some records probably belong to Rostania effusa | NT NS Sc | Rostania occultata | |
| 7617 | Rufoplaca arenaria | (Pers.) Arup, Frödén & Søchting (2013) | Yes | Rufoplaca arenaria | Caloplaca arenaria | 235 | Records currently confused with those for R. subpallida | LC NS | Rufoplaca arenaria | |
| 7618 | Rufoplaca subpallida | (H. Magn.) Arup, Søchting & Frödén (2013) | Yes | Rufoplaca subpallida | Caloplaca subpallida | 2895 | Records currently confused with those for R. arenaria | NE | Rufoplaca subpallida | |
| 7619 | Rusavskia elegans | (Link) S.Y. Kondr. & Kärnefelt (2003) | Yes | Rusavskia elegans | Caloplaca elegans; Xanthoria elegans | 1528 | LC | Rusavskia elegans | ||
| 7620 | Saccomorpha icmalea | (Ach.) Clauzade & Cl. Roux | No | Placynthiella icmalea | 732 | LC |