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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2041 | Cladonia trassii | Ahti (1998) | Yes | Cladonia trassii | Cladonia stricta auct. brit. | 1590 | VU D2 NR Sc S8 | Cladonia trassii | ||
| 2042 | Cladonia turgida | Hoffm. | No | incorrectly reported from the British Isles | ||||||
| 2043 | Cladonia umbricola | Tønsberg & Ahti (1980) | Yes | Cladonia umbricola | Cladonia polydactyla var. umbricola | 1750 | sometimes considered a chemotype of Cladonia polydactyla | DD NR | CR | Cladonia umbricola |
| 2044 | Cladonia uncialis | auct. brit. p.max.p. | No | Cladonia uncialis subsp. biuncialis | 426 | LC | ||||
| 2045 | Cladonia uncialis subsp. biuncialis | (Hoffm.) M. Choisy (1951) | Yes | Cladonia uncialis subsp. biuncialis | Cladonia uncialis | 426 | LC | Cladonia uncialis subsp. biuncialis | ||
| 2046 | Cladonia uncialis subsp. dicraea | (Ach.) D. Hawksw. | No | Cladonia uncialis subsp. biuncialis | 426 | LC | ||||
| 2047 | Cladonia uncialis subsp. uncialis | (L.) F.H. Wigg. (1780) | Yes | Cladonia uncialis subsp. uncialis | 1594 | NT NS Sc | Cladonia uncialis subsp. uncialis | |||
| 2048 | Cladonia uncialis var. dicraea | (Ach.) Räsänen | No | Cladonia uncialis subsp. biuncialis | 426 | LC | ||||
| 2049 | Cladonia uncinata | Hoffm. (1796) | No | Cladonia uncialis subsp. biuncialis | 426 | LC | ||||
| 2050 | Cladonia verticillata | (Hoffm.) Schaer. (1823) | Yes | Cladonia verticillata | Cladonia cervicornis subsp. verticillata | 370 | LC | Cladonia verticillata | ||
| 2051 | Cladonia verticillata var. cervicornis | (Ach.) Flörke | No | Cladonia cervicornis | 369 | LC | ||||
| 2052 | Cladonia zopfii | Vain. (1920) | Yes | Cladonia zopfii | Cladonia destricta | 427 | LC NS | Cladonia zopfii | ||
| 2053 | Cladoniicola staurospora | Diederich, van den Boom & Aptroot (2001) | Yes | Cladoniicola staurospora | 2553 | LC NR | LF | Cladoniicola staurospora | ||
| 2054 | Cladophialophora denigrans | (Diederich) Boers, Diederich & Ertz (2024) | Yes | Cladophialophora denigrans | 2931 | associated with various corticolous crustose lichens | NE | LF | ||
| 2055 | Cladophialophora normandinae | (Diederich & Etayo) Diederich (2013) | Yes | Cladophialophora normandinae | Sclerococcum normandinae | 2291 | lichenicolous on Normandina pulchella | NE NR | LF | Cladophialophora normandinae |
| 2056 | Cladophialophora parmeliae | (Etayo & Diederich) Diederich (2013) | Yes | Cladophialophora parmeliae | Sclerococcum parmeliae | 2617 | NE | LF | Cladophialophora parmeliae | |
| 2057 | Cladophialophora zimmermannii | Diederich & F. Berger (2024) | Yes | Cladophialophora zimmermannii | 2932 | on Mycoblastus | NE NR | LF | Cladophialophora zimmermannii | |
| 2058 | Cladosporium licheniphilum | Heuchert & U. Braun (2006) | Yes | Cladosporium licheniphilum | 2669 | lichenicolous on Xanthoria parietina | NE NR | LF | Cladosporium licheniphilum | |
| 2059 | Clandestinotrema antoninii | (Purvis & P. James) Rivas Plata, Lücking & Lumbsch (2012) | Yes | Clandestinotrema antoninii | 2832 | NE NR | Clandestinotrema antoninii | |||
| 2060 | Clathroporina calcarea | Walt. Watson (1925) | No | Clathroporinopsis nidarosiensis | 179 | LC | ||||
| 2061 | Clathroporina larbalestieri | (A.L. Sm.) A.L. Sm. | No | Thelenella larbalestieri | 899 | VU D2 NR E Sc IR | ||||
| 2062 | Clathroporinopsis nidarosiensis | (Kindt) P.F. Cannon (2024) | Yes | Clathroporinopsis nidarosiensis | Belonia nidarosiensis; Clathroporina calcarea; Gyalecta nidarosiensis | 179 | LC | Clathroporinopsis nidarosiensis | ||
| 2063 | Clathrus fulvus | (L.) Huds. (1778) | No | Coniocybe furfuracea | 466 | LC | ||||
| 2064 | Clathrus virescens | Huds. (1778) | No | Coniocybe furfuracea | 466 | LC | ||||
| 2065 | Claurouxia chalybeioides | (Nyl.) D. Hawksw. (1988) | Yes | Claurouxia chalybeioides | Lecidea chalybeioides | 1709 | LC NS | Claurouxia chalybeioides | ||
| 2066 | Clauzadea chondrodes | (A. Massal.) Clauzade & Cl. Roux (2001) | Yes | Clauzadea chondrodes | Clauzadea cyclisca | 2369 | DD NR | Clauzadea chondrodes | ||
| 2067 | Clauzadea cyclisca | (A. Massal.) V. Wirth | No | Clauzadea chondrodes | 2369 | DD NR | ||||
| 2068 | Clauzadea immersa | (Hoffm.) Hafellner & Bellem. (1984) | Yes | Clauzadea immersa | Lecidea immersa Protoblastenia immersa |
734 | LC | Clauzadea immersa | ||
| 2069 | Clauzadea metzleri | (Körb.) Clauzade & Cl. Roux ex D. Hawksw. (1992) | Yes | Clauzadea metzleri | Lecidea metzleri Protoblastenia metzleri |
749 | LC NS | Clauzadea metzleri | ||
| 2070 | Clauzadea monticola | (Ach.) Hafellner & Bellem. (1984) | Yes | Clauzadea monticola | Lecidea monticola Protblastenia monticola |
751 | LC | Clauzadea monticola |