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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1891 | Cladonia conistea | auct. | No | Cladonia humilis | 376 | LC | ||||
| 1892 | Cladonia conoidea | Ahti | No | Cladonia humilis | 376 | LC | ||||
| 1893 | Cladonia convoluta | (Lam.) Anders (1913) | Yes | Cladonia convoluta | Cladonia foliacea var. endiviifolia | 377 | Recently considered a morph of Cladonia foliacea | VU B NR P Eng S8 | Cladonia convoluta | |
| 1894 | Cladonia cornucopioides | auct. | No | Cladonia coccifera s. lat. | 374 | |||||
| 1895 | Cladonia cornuta | (L.) Baumg. (1790) | Yes | Cladonia cornuta | 378 | LC | Cladonia cornuta | |||
| 1896 | Cladonia cornutoradiata | (Vain.) Zopf | No | Cladonia subulata | 422 | LC | ||||
| 1897 | Cladonia cornutoradiata f. furcellata | (Hoffm.) Sandst. (1931 | No | Cladonia subulata | 422 | LC | ||||
| 1898 | Cladonia crispata | auct. brit. p.max.p. | No | Cladonia crispata var. cetrariiformis | 379 | LC | ||||
| 1899 | Cladonia crispata var. cetrariiformis | (Delise) Vain. (1887) | Yes | Cladonia crispata var. cetrariiformis | Cladonia crispata | 379 | LC | Cladonia crispata var. cetrariiformis | ||
| 1900 | Cladonia crispata var. crispata | (Ach.) Flot. (1839) | Yes | Cladonia crispata var. crispata | 1575 | NE NR | Cladonia crispata var. crispata | |||
| 1901 | Cladonia cryptochlorophaea | Asahina (1940) | Yes | Cladonia cryptochlorophaea | 380 | a member of the C. grayi complex | LC NS | Cladonia cryptochlorophaea | ||
| 1902 | Cladonia cyathomorpha | Stirt. ex Walt. Watson (1935) | Yes | Cladonia cyathomorpha | 381 | LC NS | Cladonia cyathomorpha | |||
| 1903 | Cladonia deformis | auct. brit. p.max.p. | No | Cladonia sulphurina | 423 | name or specific epithet valid but has been misused in the past | LC | |||
| 1904 | Cladonia deformis | (L.) Hoffm. (1796) | Yes | Cladonia deformis | 382 | DD NR | Cladonia deformis | |||
| 1905 | Cladonia degenerans | (Flörke) Spreng. | No | Cladonia phyllophora | 405 | NT NS Sc | ||||
| 1906 | Cladonia degenerans var. anomaea | (Ach.) Cromb. | No | Cladonia ramulosa | 359 | LC | ||||
| 1907 | Cladonia delessertii | Vain. | No | Cladonia subfurcata | Cladonia subfurcata (Nyl.) Arnold, incorrectly reported from the British Isles | |||||
| 1908 | Cladonia delicata | (Ehrh. ex Ach.) Florke | No | Cladonia parasitica | 404 | LC | ||||
| 1909 | Cladonia destricta | auct. | No | Cladonia zopfii | 427 | LC NS | ||||
| 1910 | Cladonia digitata | (L.) Baumg. (1790) | Yes | Cladonia digitata | 383 | LC | Cladonia digitata | |||
| 1911 | Cladonia digitata var. macilenta | (Hoffm.) Leight. | No | Cladonia macilenta | 396 | LC | ||||
| 1912 | Cladonia diversa | Asperges ex S. Stenroos (2012) | Yes | Cladonia diversa | 1749 | LC | Cladonia diversa | |||
| 1913 | Cladonia ecmocyna | auct. brit. | No | Cladonia maxima | 398 | VU D2 NR Sc | ||||
| 1914 | Cladonia elongata | auct. brit. | No | Cladonia maxima | 398 | VU D2 NR Sc | ||||
| 1915 | Cladonia endiviifolia | (Dicks.) Fr. (1831) | No | Cladonia convoluta | 377 | VU B NR P Eng S8 | ||||
| 1916 | Cladonia endiviifolia var. alcicornis | (Lightf.) Mudd (1861) | No | Cladonia foliacea | 387 | LC | ||||
| 1917 | Cladonia endiviæfolia | (Dicks.) Fr. (1831) [orth. var.] | No | Cladonia convoluta | 377 | orth. var. | VU B NR P Eng S8 | |||
| 1918 | Cladonia endiviæfolia var. alcicornis | (Lightf.) Mudd (1861) [orth. var.] | No | Cladonia foliacea | 387 | LC | ||||
| 1919 | Cladonia fimbriata | (L.) Fr. (1831) | Yes | Cladonia fimbriata | 384 | LC | Cladonia fimbriata | |||
| 1920 | Cladonia fimbriata f. nemoxyna | auct. brit. p.max.p. | No | Cladonia fimbriata | 384 | LC |