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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 511 | Arthopyrenia submicans | (Nyl.) Arnold (1873) | No | Naetrocymbe nitescens | 1605 | LC NS Sc IR | ||||
| 512 | Arthopyrenia taylorii | (Carroll ex Nyl.) Mudd (1861) | No | Dichoporis taylorii | 1378 | LC NS Sc IR | ||||
| 513 | Arthopyrenia umbrosa | (Taylor) Mudd (1861) | No | Gyrographa gyrocarpa | 947 | LC | ||||
| 514 | Arthopyrenia viridescens | Coppins | No | Anisomeridium viridescens | 1607 | LC NS Sc IR | ||||
| 515 | Arthopyrenia viridula | A.L. Sm. (1911) | No | Verrucaria elaeina | 1871 | LC | ||||
| 516 | Arthopyrenia willeyana | R.C. Harris | No | Anisomeridium polypori | 49 | LC | ||||
| 517 | Arthopyrenia ‘salweii’ | (Leight. ex Nyl.) Zahlbr. | No | Acrocordia salweyi | 36 | LC | ||||
| 518 | Arthothelium dictyosporum | (Coppins & P. James) Coppins (1989) | Yes | Arthonia dictyospora; Arthothelium dictyosporum | Arthothelium ilicinum var. dictyosporum | 95 | NT NR E P Sc IR | Arthothelium dictyosporum | ||
| 519 | Arthothelium dispersum | auct. brit. p.p. | No | Arthothelium lirellans | 1569 | LC NS Sc IR | F | |||
| 520 | Arthothelium dispersum | auct. brit. p.p. | No | Arthothelium orbilliferum | 1711 | LC NS Sc IR | F | |||
| 521 | Arthothelium dispersum | (DC.) Mudd | No | Arthothelium ruanum | 97 | LC NS | ||||
| 522 | Arthothelium ilicinum | (Taylor) P. James | No | Arthonia ilicina | 94 | LC Sc IR | ||||
| 523 | Arthothelium ilicinum var. dictyosporum | Coppins & P. James | No | Arthothelium dictyosporum | 95 | NT NR E P Sc Wa IR | ||||
| 524 | Arthothelium ilicinum var. reagens | Coppins & P. James | No | Arthothelium macounii | 96 | VU D2 NR P Sc IR | ||||
| 525 | Arthothelium lirellans | (Almq.) Coppins (1979) | Yes | Arthothelium lirellans | Arthonia lirellans Dermatina swinscowii |
1569 | LC NS Sc IR | F | Arthothelium lirellans | |
| 526 | Arthothelium macounii | (G. Merr.) W.J. Noble (1987) | Yes | Arthothelium macounii | Arthothelium ilicinum var. reagens Arthothelium reagans |
96 | VU D2 NR P Sc IR | Arthothelium macounii | ||
| 527 | Arthothelium norvegicum | Coppins & Tønsberg (1984) | Yes | Arthothelium norvegicum | Arthonia norvegica | 1743 | NT NR Sc | Arthothelium norvegicum | ||
| 528 | Arthothelium orbilliferum | (Almq.) Hasse (1913) | Yes | Arthothelium orbilliferum | Arthonia orbilliferum | 1711 | LC NS Sc IR | F | Arthothelium orbilliferum | |
| 529 | Arthothelium reagens | (Coppins & P. James) Coppins & P. James | No | Arthothelium macounii | 96 | VU D2 NR P Sc IR | ||||
| 530 | Arthothelium ruanum | (A. Massal.) Körb. (1861) | Yes | Arthothelium ruanum | Arthonia ruana | 97 | LC NS | Arthothelium ruanum | ||
| 531 | Arthothelium spectabile | A. Massal. (1852) | Yes | Arthothelium spectabile | 98 | Ex | Arthothelium spectabile | |||
| 532 | Arthrorhaphis aeruginosa | R. Sant. & Tønsberg (1994) | Yes | Arthrorhaphis aeruginosa | 1916 | LC NS | LF | Arthrorhaphis aeruginosa | ||
| 533 | Arthrorhaphis alpina | (Schaer.) R. Sant. (1980) | Yes | Arthrorhaphis alpina | Bacidia citrinella subsp. alpina | 99 | LC NS | Arthrorhaphis alpina | ||
| 534 | Arthrorhaphis citrinella | (Ach.) Poelt (1969) | Yes | Arthrorhaphis citrinella | Bacidia citrinella | 100 | LC | Arthrorhaphis citrinella | ||
| 535 | Arthrorhaphis fuscireagens | auct. [orth. var.] | No | Arthrorhaphis muddii | 1923 | NE NR | LF | |||
| 536 | Arthrorhaphis fuscoreagens | (Vain.) Poelt (1969), non auct. | No | Arthrorhaphis grisea | 313 | LC NS | LF | |||
| 537 | Arthrorhaphis fuscoreagens | auct. | No | Arthrorhaphis muddii | 1923 | NE NR | LF | |||
| 538 | Arthrorhaphis grisea | Th. Fr. (1860) | Yes | Arthrorhaphis grisea | Gongylia sabuletorum | 313 | LC NS | LF | Arthrorhaphis grisea | |
| 539 | Arthrorhaphis muddii | Obermayer (1994) | Yes | Arthrorhaphis muddii | Arthrorhaphis fuscireagens | 1923 | NE NR | LF | Arthrorhaphis muddii | |
| 540 | Arthrorhaphis vacillans | Th. Fr. & Almq. ex Fr. (1867) | Yes | Arthrorhaphis vacillans | 119 | DD NR Sc | Arthrorhaphis vacillans |