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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 421 | Arthopyrenia aeruginella | (Nyl.) Arnold | No | Mycoglaena myricae | 1278 | LC NS | F | |||
| 422 | Arthopyrenia alba | (Schrad.) Zahlbr. | No | Acrocordia gemmata | 34 | LC L* | ||||
| 423 | Arthopyrenia allogena | (Nyl.) Arnold (1870) | Yes | Arthopyrenia allogena | 2011 | NE NR | LF | Arthopyrenia allogena | ||
| 424 | Arthopyrenia analepta | auct. brit. p.p. | No | Naetrocymbe punctiformis | 1542 | name or specific epithet valid but has been misused in the past | LC | F | ||
| 425 | Arthopyrenia analepta | (Ach.) A. Massal. (1852) | Yes | Arthopyrenia analepta | Arthopyrenia fallax Arthopyrenia lapponina |
1540 | LC | F | Arthopyrenia analepta | |
| 426 | Arthopyrenia analeptoides | (Nyl.) A.L. Sm. | No | Mycoporum antecellens | 75 | LC | F | |||
| 427 | Arthopyrenia antecellans | (Nyl.) Arnold [orth. error] | No | Mycoporum antecellens | 75 | LC | F | |||
| 428 | Arthopyrenia antecellens | (Nyl.) Arnold | No | Mycoporum antecellens | 75 | LC | F | |||
| 429 | Arthopyrenia aphorisasa | (Stirt.) A.L. Sm. | No | status uncertain; type not traced | ||||||
| 430 | Arthopyrenia arenicola | (Leight.) A.L. Sm. (1911) | No | Collemopsidium argilospilum | 77 | DD NR IR | ||||
| 431 | Arthopyrenia areniseda | A.L. Sm. | No | Collemopsidium arenisedum | 1889 | NT NR IR | ||||
| 432 | Arthopyrenia argilospila | (Nyl.) A.L. Sm. | No | Collemopsidium argilospilum | 77 | DD NR IR | ||||
| 433 | Arthopyrenia atractospora | Zahlbr. (1935) | No | Naetrocymbe atractospora | 1979 | NT NR Sc | Arthopyrenia atractospora | |||
| 434 | Arthopyrenia biformis | (Borrer) A. Massal. | No | Anisomeridium biforme | 48 | LC | ||||
| 435 | Arthopyrenia bryospila | (Nyl.) Arnold | No | Frigidopyrenia bryospila | 78 | DD NR | ||||
| 436 | Arthopyrenia byssacea | (Taylor) A.L. Sm. | No | Anisomeridium biforme | 48 | LC | ||||
| 437 | Arthopyrenia caesia | (Nyl.) Zahlbr. | No | Collemopsidium caesium | 79 | NT NR Sc | ||||
| 438 | Arthopyrenia carneobrunneola | Coppins (1988) | No | Naetrocymbe carneobrunneola | 1622 | LC NS Sc IR | Arthopyrenia carneobrunneola | |||
| 439 | Arthopyrenia cembrina | (Anzi) Grummann ex D. Hawksw. (1980) | No | Naetrocymbe punctiformis | 1542 | LC | F | |||
| 440 | Arthopyrenia cerasi | (Schrad.) A. Massal. (1852) | Yes | Arthopyrenia cerasi | 81 | LC NS | F | Arthopyrenia cerasi | ||
| 441 | Arthopyrenia chlorococca | (Leight.) A.L. Sm. (1911) | No | Normandina chlorococca | 2837 | LC | ||||
| 442 | Arthopyrenia cinereopruinosa | auct. brit. p.p. pre-c. 1980 [e.g. as used in original, 1976 version of RIEC] | No | Anisomeridium ranunculosporum | 1584 | name or specific epithet valid but has been misused in the past | LC | |||
| 443 | Arthopyrenia cinereopruinosa | (Schaer.) A. Massal. (1855) | Yes | Alloarthopyrenia italica | 82 | LC | F | Arthopyrenia cinereopruinosa | ||
| 444 | Arthopyrenia colleta | (Stirt.) A.L. Sm. | No | status uncertain; type not traced | ||||||
| 445 | Arthopyrenia conoidea | (Fr.) Zahlbr. | No | Acrocordia conoidea | 33 | LC | ||||
| 446 | Arthopyrenia consequens | (Nyl.) Arnold | No | Collemopsidium halodytes | 87 | LC NS | ||||
| 447 | Arthopyrenia cookei | (Linds.) Arnold | No | Muellerella lichenicola | 2116 | LC | LF | |||
| 448 | Arthopyrenia crombiei | A.L. Sm. | No | Arthopyrenia cerasi | 81 | LC NS | F | |||
| 449 | Arthopyrenia desistens | (Nyl.) A.L. Sm. (1911) | Yes | Arthopyrenia desistens | 2012 | status uncertain; probably a lichenicolous fungus | NE NR | LF | Arthopyrenia desistens | |
| 450 | Arthopyrenia elegans | R. Sant. in ed. | No | Collemopsidium elegans | 83 | LC NS |