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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4771 | Lichen candidus | Weber (1798), nec Sm. (1803) | No | Thalloidima candidum | incorrectly reported from the British Isles | |||||
| 4772 | Lichen caninus | L. | No | Peltigera canina | 1039 | LC | ||||
| 4773 | Lichen caperatus | L. | No | Flavoparmelia caperata | 987 | LC | ||||
| 4774 | Lichen capitatus | Ach. | No | Chaenotheca furfuracea | 466 | LC | ||||
| 4775 | Lichen carnosus | Dicks. | No | Massalongia carnosa | 861 | LC | ||||
| 4776 | Lichen cartilagineus | Lightf. | No | Squamarina cartilaginea | 1337 | LC | ||||
| 4777 | Lichen cartilagineus | With. | No | Squamarina cartilaginea | 1337 | LC | ||||
| 4778 | Lichen cerinus | Hedw. | No | Caloplaca cerina var. cerina | 241 | LC | ||||
| 4779 | Lichen ceuthocarpus | Sm. | No | Pertusaria pseudocorallina | 1089 | LC | ||||
| 4780 | Lichen chloroleucus | Sm. (1805) | No | Caloplaca stillicidiorum | 1991 | LC NS | ||||
| 4781 | Lichen chrysocephalus | Turner (1804) | No | Chaenotheca chrysocephala | 343 | LC | ||||
| 4782 | Lichen chrysophtalmos | L. (1771) [orth. var.] | No | Teloschistes chrysophthalmos | 1380 | CR B, C2, D NR P | ||||
| 4783 | Lichen chrysophthalmos | L. (1771) | No | Teloschistes chrysophthalmos | 1380 | CR B, C2, D NR P | ||||
| 4784 | Lichen chrysophthalmus | L. (1771) [orth. var.] | No | Teloschistes chrysophthalmos | 1380 | CR B, C2, D NR P | ||||
| 4785 | Lichen ciliaris | L. (1753) | No | Anaptychia ciliaris | 45 | EN A2 NS P Eng Wa | ||||
| 4786 | Lichen cinereus | L. | No | Aspicilia cinerea s. lat. | 104 | LC | ||||
| 4787 | Lichen clavellus | sensu Sm., non Ach. | No | Calicium quercinum | 227 | Ex | ||||
| 4788 | Lichen clementei | Sm. | No | Physcia clementei | 1115 | NT NS Sc | ||||
| 4789 | Lichen clementi | Sm. [orth. var.] | No | Physcia clementei | 1115 | NT NS Sc | ||||
| 4790 | Lichen coarctatus | Sm. | No | Trapelia coarctata | 1431 | LC | ||||
| 4791 | Lichen coccifera | auct. brit. p.p. | No | Cladonia diversa | 1749 | LC | ||||
| 4792 | Lichen cocciferus | L. | No | Cladonia coccifera s. lat. | 374 | |||||
| 4793 | Lichen coccineus | Dicks. (1785), non Neck. | No | Haematomma ochroleucum | LC | |||||
| 4794 | Lichen coeruleonigricans | Lightf. (1777), non auct.; nom. rejic. | No | Fuscopannaria praetermissa | 1030 | NT NR Sc | ||||
| 4795 | Lichen coeruleonigricans | auct. | No | Thalloidima sedifolium | 1416 | LC P Eng Wa | ||||
| 4796 | Lichen compositus | With. | No | Arthonia varians | 714 | Lecanora rupicola parasitized by Arthonia varians {LF} [name not typified] | LC NS | |||
| 4797 | Lichen conspurcatus | Sm. (1801) p.p. | No | Dirina massiliensis f. sorediata | 500 | LC | ||||
| 4798 | Lichen conspurcatus | Sm. (1801) p.p. | No | unidentified hyphomycete on Dirina massiliensis f. sorediata | LF | |||||
| 4799 | Lichen corallinus | L. | No | Lepra corallina | 1066 | LC | ||||
| 4800 | Lichen corneus | With. (1796) | No | Cliostomum griffithii | 429 | LC |