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 Sort ascending | Authority | Is Current Name? | Current Taxon Name | Synonyms | BLS Number | Comments | Conservation Evaluation | Group | Account & Map |
|---|---|---|---|---|---|---|---|---|---|---|
| 8671 | Arthonia byssacea | (Weigel) Almq. (1880) | No | Inoderma byssaceum | 2604 | VU D1 NR | ||||
| 8672 | Arthonia atrofuscella | Nyl. | No | Arthonia didyma | 56 | LC | ||||
| 8673 | Arthonia atra | (Pers.) A. Schneid. (1898) | Yes | Arthonia atra | Opegrapha atra | 938 | LC | Arthonia atra | ||
| 8674 | Arthonia atlantica var. positiva | P. James (1978) | No | Reichlingia dendritica | 53 | NT NR P Eng Sc Wa IR | ||||
| 8675 | Arthonia atlantica | P. James (1970) | No | Reichlingia dendritica | 53 | NT NR P Eng Sc Wa IR | ||||
| 8676 | Arthonia astroidestra | Nyl. [orth. error] | No | Synarthonia astroidestera | 1687 | NT NS IR | ||||
| 8677 | Arthonia astroidestera | Nyl. (1874) | No | Synarthonia astroidestera | 1687 | NT NS IR | ||||
| 8678 | Arthonia astroidea var. swartziana | (Ach.) Hepp | No | Arthonia radiata | 69 | LC | ||||
| 8679 | Arthonia astroidea var. simulans | Leight. | No | Arthonia radiata | 69 | LC | ||||
| 8680 | Arthonia astroidea | Ach. | No | Arthonia radiata | 69 | LC | ||||
| 8681 | Arthonia aspersella | Leight. | No | Arthonia didyma | 56 | LC | ||||
| 8682 | Arthonia aspersa | Leight. (1856) | No | Arthonia arthonioides | 51 | LC NS | ||||
| 8683 | Arthonia arthonioides | (Ach.) A.L. Sm. (1911) | Yes | Arthonia arthonioides | Arthonia aspersa | 51 | LC NS | Arthonia arthonioides | ||
| 8684 | Arthonia armoricana | Leight. non Nyl. | No | Synarthonia astroidestera | 1687 | NT NS IR | ||||
| 8685 | Arthonia apotheciorum | (A. Massal.) Almq. (1880) | Yes | Arthonia apotheciorum | Arthonia clemens auct. brit. | 1501 | LC NS | LF | Arthonia apotheciorum | |
| 8686 | Arthonia apatetica | (A. Massal.) Th. Fr. (1866) | Yes | Arthonia apatetica | 2418 | DD NR Sc | Arthonia apatetica | |||
| 8687 | Arthonia anombrophila | Coppins & P. James (1989) | No | Reichlingia anombrophila | 1588 | LC NS Sc IR | ||||
| 8688 | Arthonia anglica | Coppins (1989) | Yes | Arthonia anglica | 1686 | EN B, D NR P Eng IR | Arthonia anglica | |||
| 8689 | Arthonia anastomosans | auct. brit. p.p. | No | Arthothelium lirellans | 1569 | LC NS Sc IR | F | |||
| 8690 | Arthonia anastomosans | auct. brit. p.p. | No | Arthothelium orbilliferum | 1711 | LC NS Sc IR | F | |||
| 8691 | Arthonia amylospora | Almq. (1880) | Yes | Arthonia amylospora | 1930 | LC NR Sc | LF | Arthonia amylospora | ||
| 8692 | Arthonia almquistii | Vain. (1883) | Yes | Arthonia almquistii | 771 | NE NR Sc | LF | Arthonia almquistii | ||
| 8693 | Arthonia abeloneae | P.M. Jørg. (1970) | No | Corticiruptor abeloneae | 1915 | lichenicolous on Sticta 'doufourii' | NT NR | LF | ||
| 8694 | Arthonia abelonae | P.M. Jørg. (1970) [orth. error] | No | Corticiruptor abeloneae | 1915 | NT NR | ||||
| 8695 | Arrhenia peltigerina | (Peck) Redhead, Lutzoni, Moncalvo & Vilgalys (2002) | Yes | Arrhenia peltigerina | Omphalina cupulatoides | 913 | NE NR | LF | Arrhenia peltigerina | |
| 8696 | Arrhenia griseopallida | (Desm.) Watling (1989) | Yes | Arrhenia griseopallida | Omphalina griseopallida | No longer considered to be lichenized | NE | F | ||
| 8697 | Arctoparmelia incurva | (Pers.) Hale (1986) | Yes | Arctoparmelia incurva | Parmelia incurva | 1000 | LC | Arctoparmelia incurva | ||
| 8698 | Arctomia fascicularis | (L.) Otálora & Wedin (2013) | No | Gabura fascicularis | 444 | NT NS P Sc WaL IR | ||||
| 8699 | Arctomia delicatula | Th. Fr. (1860) | Yes | Arctomia delicatula | Placynthium delicatulum | 50 | NT NR Sc | Arctomia delicatula | ||
| 8700 | Aquacidia viridifarinosa | (Coppins & P. James) Aptroot (2018) | Yes | Aquacidia viridifarinosa | Bacidia viridifarinosa | 1583 | LC | Aquacidia viridifarinosa |