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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Abrothallus bertianus | De Not. (1849) | Yes | Abrothallus bertianus | Abrothallus glabratulae | 2001 | lichenicolous on Melanelixia glabratula | LC NS | LF | Abrothallus bertianus |
| 2 | Abrothallus caerulescens | I. Kotte (1909) | Yes | Abrothallus caerulescens | 12 | lichenicolous on Xanthoparmelia | LC NR | LF | Abrothallus caerulescens | |
| 3 | Abrothallus cetrariae | I. Kotte (1909) | Yes | Abrothallus cetrariae | 2002 | lichenicolous on Platismatia glauca. Sometimes considered synonymous with Abrothallus parmeliarum | LC NR | LF | Abrothallus cetrariae | |
| 4 | Abrothallus cladoniae | R. Sant. & D. Hawksw. (1990) | Yes | Abrothallus cladoniae | 2003 | Lichenicolous on Cladonia | LC NR | LF | Abrothallus cladoniae | |
| 5 | Abrothallus glabratulae | I. Kotte (1909) | No | Abrothallus bertianus | 2001 | LC NS | LF | |||
| 6 | Abrothallus lobariae | (Diederich & Etayo) Diederich & Ertz (2018) | Yes | Abrothallus lobariae | Phoma lobariae | 1984 | lichenicolous on Lobaria pulmonaria. Known only as 'Phoma' anamorph | NE NR | LF | Abrothallus lobariae |
| 7 | Abrothallus lobariellus | (Nyl.) Zopf (1896) | No | Sclerococcum lobariellum | 2046 | LC NS | LF | |||
| 8 | Abrothallus microspermus | Tul. (1852) | Yes | Abrothallus microspermus | Vouauxiomyces truncatus (anamorph) | 4 | Lichenicolous on Flavoparmelia. Abrothallus parmotrematis often considered a synonym | LC NS | LF | Abrothallus microspermus |
| 9 | Abrothallus moorei | Linds. (1867) | No | ? Bachmanniomyces (Phaeopyxis) punctum | LF | |||||
| 10 | Abrothallus parmeliarum | (Sommerf.) Arnold (1874) | Yes | Abrothallus parmeliarum | 2004 | Lichenicolous on Parmelia s. str. | LC NS | LF | Abrothallus parmeliarum | |
| 11 | Abrothallus parmotrematis | Diederich (2011) | Yes | Abrothallus parmotrematis | Vouauxiomyces truncatus auct. brit. p.p. (anamorph) | 2633 | Lichenicolous on Parmotrema spp. Often considered synonymous with Abrothallus microspermus | LC NS | LF | Abrothallus parmotrematis |
| 12 | Abrothallus prodiens | (Harm.) Diederich & Hafellner (1989) | Yes | Abrothallus prodiens | 2005 | Lichenicolous on Hypogymnia physodes | LC NS | LF | Abrothallus prodiens | |
| 13 | Abrothallus smithii | Tul. | No | Abrothallus parmeliarum | 2004 | LC NS | LF | |||
| 14 | Abrothallus suecicus | (Kirschst.) Nordin (1964) | Yes | Abrothallus suecicus | Vouauxiomyces ramalinae (anamorph) | 2006 | Lichenicolous on Ramalina spp., esp. R. farinacea | LC NR | LF | Abrothallus suecicus |
| 15 | Abrothallus usneae | Rabenh. (1861) | Yes | Abrothallus usneae | 2007 | Lichenicolous on Usnea | LC NS | LF | Abrothallus usneae | |
| 16 | Abrothallus welwitschii | Mont. ex Tul. (1852) | Yes | Abrothallus welwitschii | 2008 | Lichenicolous on Sticta | LC NS | LF | Abrothallus welwitschii | |
| 17 | Absconditella annexa | (Arnold) Vězda (1965) | Yes | Absconditella annexa | 765 | LC NR Sc | Absconditella annexa | |||
| 18 | Absconditella celata | Döbbeler & Poelt (1977) | Yes | Absconditella celata | 1 | LC NR | Absconditella celata | |||
| 19 | Absconditella delutula | (Nyl.) Coppins & H. Kilias (1977) | Yes | Absconditella delutula | Absconditella modesta; Catillaria delutula | 2 | LC NS | Absconditella delutula | ||
| 20 | Absconditella lignicola | Vězda & Pišút (1985) [1984] | Yes | Absconditella lignicola | 1203 | LC NR | Absconditella lignicola | |||
| 21 | Absconditella modesta | (Hegetschw. ex Stizenb.) Vězda (1966) | No | Absconditella delutula | 2 | LC NS | ||||
| 22 | Absconditella pauxilla | Vězda & Vivant (1975) | Yes | Absconditella pauxilla | 1738 | LC NR Sc | Absconditella pauxilla | |||
| 23 | Absconditella sphagnorum | Vězda & Poelt (1965) | Yes | Absconditella sphagnorum | 3 | NT NR Sc | Absconditella sphagnorum | |||
| 24 | Absconditella trivialis | (Willey ex Tuck.) Vězda (1965) | Yes | Absconditella trivialis | 1652 | LC NR | Absconditella trivialis | |||
| 25 | Acarospora admissa | (Nyl.) Kullh. (1871) | Yes | Acarospora admissa | Acarospora durietzii | 15 | DD NR | Acarospora admissa | ||
| 26 | Acarospora admissa | auct. brit. p.p. | No | Acarospora badiofusca | 6 | name or specific epithet valid but has been misused in the past | NT NR Sc | |||
| 27 | Acarospora admissa | auct. brit. p.p. | No | Acarospora impressula | 5 | name or specific epithet valid but has been misused in the past | LC | |||
| 28 | Acarospora admissa | auct. brit. p.p. | No | Acarospora veronensis | 30 | name or specific epithet valid but has been misused in the past | LC NS | |||
| 29 | Acarospora aequatula | H. Magn. | No | Acarospora | 18 | ? Acarospora nitrophila. British specimens need to be reassessed | ||||
| 30 | Acarospora amphibola | auct. p.p. | No | Myriospora rhagadiza | 2455 | NE NR |