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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 8641 | Arthonia elegans | auct. brit. p.max.p., non (Ach.) Almq. (1880) | No | Coniocarpon cuspidans | 58 | LC | ||||
| 8642 | Arthonia dispersa var. excipienda | (Nyl.) H. Olivier | No | Arthonia excipienda | 1599 | NT NR Sc | F | |||
| 8643 | Arthonia dispersa | auct. brit. p.p. | No | Arthonia didyma | 56 | LC | ||||
| 8644 | Arthonia dispersa | auct. brit. p.p. | No | Arthonia excipienda | 1599 | NT NR Sc | F | |||
| 8645 | Arthonia diploiciae | Calat. & Diederich (1995) | Yes | Arthonia diploiciae | 2009 | DD NR | LF | Arthonia diploiciae | ||
| 8646 | Arthonia digitatae | Hafellner (1999) | Yes | Arthonia digitatae | 2416 | LC NR | LF | Arthonia digitatae | ||
| 8647 | Arthonia didyma | auct. brit. p.p. pre-1980 | No | Arthonia vinosa | 73 | name or specific epithet valid but has been misused in the past | LC L* | |||
| 8648 | Arthonia didyma | Körb. (1853) | Yes | Arthonia didyma | Arthonia aspersella Arthonia dispersa auct. brit. Arthonia lurida auct. |
56 | Pre-1980 records usually referred to A. vinosa | LC | Arthonia didyma | |
| 8649 | Arthonia dictyospora | (Coppins & P. James) McCune (2017) | No | Arthothelium dictyosporum | 95 | NT NR E P Sc Wa IR | ||||
| 8650 | Arthonia destruens | Rabenh. (1868) | Yes | Arthonia destruens | 2564 | NE NR | LF | |||
| 8651 | Arthonia dendritica | (Leight.) Cromb., non (Ach.) Dufour | No | Reichlingia dendritica | 53 | NT NR P Eng Sc Wa IR | ||||
| 8652 | Arthonia decolorans | (Turner & Borrer ex Sm.) Erichsen | No | Dendrographa decolorans | 1315 | LC | ||||
| 8653 | Arthonia coronata | Etayo (1996) | Yes | Arthonia coronata | 2415 | LC NR | LF | Arthonia coronata | ||
| 8654 | Arthonia colombiana | Etayo (2000) | Yes | Arthonia colombiana | 2463 | NE NR | LF | Arthonia colombiana | ||
| 8655 | Arthonia cohabitans | Coppins (1989) | Yes | Arthonia cohabitans | 27 | Lichenicolous on Arthothelium macounii | VU D2 NR E P Sc IR | LF | Arthonia cohabitans | |
| 8656 | Arthonia clemens | auct. brit. | No | Arthonia apotheciorum | 1501 | LC NS | LF | |||
| 8657 | Arthonia cinnabarina var. opegraphina | auct. brit. p.min.p. | No | Coniocarpon fallax | 2760 | LC | ||||
| 8658 | Arthonia cinnabarina var. opegraphina | auct. brit. p.max.p. | No | Coniocarpon cuspidans | 58 | LC | ||||
| 8659 | Arthonia cinnabarina var. kermesina | (Schaer.) Nyl. (1861) | No | Coniocarpon cinnabarinum | 72 | LC | ||||
| 8660 | Arthonia cinnabarina f. opegraphina | auct. brit. p.min.p. | No | Coniocarpon fallax | 2760 | LC | ||||
| 8661 | Arthonia cinnabarina f. opegraphina | auct. brit. p.max.p. | No | Coniocarpon cuspidans | 58 | LC | ||||
| 8662 | Arthonia cinnabarina f. microstigma | (Turner & Borrer) Leight. | No | Coniocarpon cinnabarinum | 72 | LC | ||||
| 8663 | Arthonia cinnabarina f. dubia | (Turner & Borrer) Leight. | No | Coniocarpon cinnabarinum | 72 | LC | ||||
| 8664 | Arthonia cinnabarina f. cuspidans | Nyl. (1876) | No | Coniocarpon cuspidans | 58 | LC | ||||
| 8665 | Arthonia cinnabarina | (DC.) Wallr. (1831) | No | Coniocarpon cinnabarinum | 72 | LC | ||||
| 8666 | Arthonia cinereopruinosa | auct. brit. | No | Reichlingia anombrophila | 1588 | LC NS Sc IR | ||||
| 8667 | Arthonia cinereopruinosa | Schaer. (1850) | No | 55 | incorrectly reported from the British Isles; BLS number no longer used | |||||
| 8668 | Arthonia cascarillae | auct. brit., non (Fée) Nyl. | No | Arthonia radiata | 69 | LC | ||||
| 8669 | Arthonia calcarea | (Turner ex Sm.) Ertz & Diederich (2009) | Yes | Arthonia calcarea | Opegrapha calcarea; Opegrapha chevallieri; Opegrapha conferta auct.; Opegrapha calcarea; Opegrapha confluens auct.; Opegrapha decandollei; Opegrapha saxatilis auct. | 959 | LC | Arthonia calcarea | ||
| 8670 | Arthonia caerulescens | (Almq.) R. Sant. (2000) | Yes | Arthonia caerulescens | 2563 | LC NR | LF | Arthonia caerulescens |