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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1771 | Chaenothecopsis epithallina | Tibell (1975) | Yes | Chaenothecopsis epithallina | 1939 | NE NR Sc | LF | Chaenothecopsis epithallina | ||
| 1772 | Chaenothecopsis lignicola | (Nádv.) A.F.W. Schmidt (1970) | No | Chaenothecopsis pusiola | 351 | NT NR Sc | LF | |||
| 1773 | Chaenothecopsis nigra | Tibell (1987) | Yes | Chaenothecopsis nigra | 1831 | LC NS | Chaenothecopsis nigra | |||
| 1774 | Chaenothecopsis parasitaster | (Bagl. & Carestia) D. Hawksw. (1978) | Yes | Chaenothecopsis parasitaster | 1515 | LC NS | LF | Chaenothecopsis parasitaster | ||
| 1775 | Chaenothecopsis pusilla | (Ach.) A.F.W. Schmidt (1970) | Yes | Chaenothecopsis pusilla | 1931 | LC NS | LF | Chaenothecopsis pusilla | ||
| 1776 | Chaenothecopsis pusiola | (Ach.) Vain. (1927) | Yes | Chaenothecopsis pusiola | 351 | NT NR Sc | LF | Chaenothecopsis pusiola | ||
| 1777 | Chaenothecopsis retinens | (Nyl.) Tibell (1991) | Yes | Chaenothecopsis retinens | Calicium retinens | 1396 | NE NR | LF | Chaenothecopsis retinens | |
| 1778 | Chaenothecopsis rubescens | Vain. (1927) | Yes | Chaenothecopsis rubescens | 1940 | British records doubtful | DD NR | LF | Chaenothecopsis rubescens | |
| 1779 | Chaenothecopsis savonica | (Räsänen) Tibell (1984) | Yes | Chaenothecopsis savonica | 1832 | NT NR Sc | Chaenothecopsis savonica | |||
| 1780 | Chaenothecopsis subparoica | (Nyl.) Tibell (1995) | Yes | Chaenothecopsis subparoica | 2313 | NE NR | LF | Chaenothecopsis subparoica | ||
| 1781 | Chaenothecopsis subpusilla | (Vain.) Tibell (1975) | No | Chaenothecopsis pusilla | 1931 | LC NS | ||||
| 1782 | Chaenothecopsis tasmanica | Tibell (1985) | Yes | Chaenothecopsis tasmanica | 2916 | NE NR | F | Chaenothecopsis tasmanica | ||
| 1783 | Chaenothecopsis tigillaris | (Berk. & Broome) D. Hawksw. (2014) | Yes | Chaenothecopsis tigillaris | Calicium tigillare (Berk. & Broome) Sacc., non (Ach.) Pers.; Sphinctrina tigillaris | 2639 | Fungicolous on wooden beam in church | NE NR | F | Chaenothecopsis tigillaris |
| 1784 | Chaenothecopsis vainioana | (Nádv.) Tibell (1979) | Yes | Chaenothecopsis vainioana | 1833 | NT NR Sc | LF | Chaenothecopsis vainioana | ||
| 1785 | Chaenothecopsis viridialba | (Kremp.) A.F.W. Schmidt (1970) | Yes | Chaenothecopsis viridialba | 1941 | DD NR Sc | F | Chaenothecopsis viridialba | ||
| 1786 | Chaenothecopsis viridireagens | (Nádv.) A.F.W. Schmidt (1970) | Yes | Chaenothecopsis viridireagens | 1942 | NT NR Sc | LF | Chaenothecopsis viridireagens | ||
| 1787 | Chaenotricha ciliaris | Suija, McMullin & P. Lõhmus (2023) | Yes | Chaenotricha ciliaris | 2912 | NE NR | ||||
| 1788 | Chicitaea cristinae | (Guzow-Krzem., Łubek, Kubiak & Kukwa) Guzow-Krzem., Kukwa & Lendemer (2024) | Yes | Chicitaea cristinae | Loxospora cristinae | 2739 | NE NR | Chicitaea cristinae | ||
| 1789 | Chiodecton albidum | (Taylor) Leight. 1851) | No | Syncesia myrticola | 352 | NT NS IR | ||||
| 1790 | Chiodecton crassum | (DC.) Zahlbr. (1905) | No | Enterographa crassa | 504 | LC | ||||
| 1791 | Chiodecton graphidioides | Leight. (1854) | No | Schismatomma ricasolii | 1316 | VU B, D1 NS P Eng Sc Wa IR | ||||
| 1792 | Chiodecton hutchinsiae | (Leight.) Zahlbr. (1905) | No | Enterographa hutchinsiae | 506 | LC | ||||
| 1793 | Chiodecton myrticola | Fée (1824) | No | Syncesia myrticola | 352 | NT NS IR | ||||
| 1794 | Chiodecton myrticola var. sarniense | Salwey ex Mudd (1861) | No | Syncesia myrticola | 352 | NT NS IR | ||||
| 1795 | Chiodecton petraeum | Delise (1856) | No | Syncesia myrticola | 352 | NT NS IR | ||||
| 1796 | Chiodecton petraeum | No | 353 | BLS number no longer used | ||||||
| 1797 | Chiodecton subdiscordans | Nyl. | No | Byssoloma subdiscordans | 221 | NT NR | ||||
| 1798 | Chiographa lyellii | (Sm.) Leight. | No | Phaeographis lyellii | 1102 | NT NS IR | ||||
| 1799 | Chionosphaera coppinsii | P. Roberts (1997) | No | Chionosphaera coppinsii | 2031 | NE NR | LF | |||
| 1800 | Chionosphaera lichenicola | Alstrup, B. Sutton & Tønsberg (1993) | No | Chionosphaera lichenicola | 2425 | NE NR | LF |