| 4801 | Lichen borreri | Sm. | No | Punctelia borreri |  | 985 | LC Sc |  |  | 
          
                                                                                        | 4802 | Lichen brunneus | Sw. | No | Protopannaria pezizoides |  | 979 | LC |  |  | 
          
                                                                                        | 4803 | Lichen burgessii | L. | No | Leptogium burgessii |  | 830 | LC Sc WaL IR |  |  | 
          
                                                                                        | 4804 | Lichen byssoides | L. | No | Baeomyces rufus |  | 176 | LC |  |  | 
          
                                                                                        | 4805 | Lichen caesariensis | With. | No | Roccella fuciformis |  | 1301 | NT NS |  |  | 
          
                                                                                        | 4806 | Lichen calcareus | L. (1753) | No | Circinaria calcarea |  | 103 | LC |  |  | 
          
                                                                                        | 4807 | Lichen calcareus | Weiss (1770) non L. | No | Rhizocarpon umbilicatum |  | 1279 | LC |  |  | 
          
                                                                                        | 4808 | Lichen calicaris | L. | No | Ramalina calicaris |  | 1231 | LC |  |  | 
          
                                                                                        | 4809 | Lichen calicaris | sensu Huds. p.p. | No | Ramalina fastigiata |  | 1235 | LC |  |  | 
          
                                                                                        | 4810 | Lichen calicaris | sensu Lightf. p.p. | No | Ramalina fastigiata |  | 1235 | LC |  |  | 
          
                                                                                        | 4811 | Lichen candelaris | (L.) Neck. (1771), nom. illeg. | No | Chrysothrix candelaris |  | 354 | LC |  |  | 
          
                                                                                        | 4812 | Lichen candelarius | ß. sensu Lightf. | No | Variospora flavescens |  | 259 | LC |  |  | 
          
                                                                                        | 4813 | Lichen candelarius | L. (1753) | No | Polycauliona candelaria s. str. |  | 2364 |  |  |  | 
          
                                                                                        | 4814 | Lichen candidus | Sm. (1803), non Weber (1798) | No | Toniniopsis aromatica |  | 1415 | LC |  |  | 
          
                                                                                        | 4815 | Lichen candidus | Weber (1798), nec Sm. (1803) | No | Thalloidima candidum |  |  |  |  |  | 
          
                                                                                        | 4816 | Lichen caninus | L. | No | Peltigera canina |  | 1039 | LC |  |  | 
          
                                                                                        | 4817 | Lichen caperatus | L. | No | Flavoparmelia caperata |  | 987 | LC |  |  | 
          
                                                                                        | 4818 | Lichen capitatus | Schreb. (1771) | No | Coniocybe furfuracea |  | 466 | LC |  |  | 
          
                                                                                        | 4819 | Lichen carnosus | Dicks. | No | Massalongia carnosa |  | 861 | LC |  |  | 
          
                                                                                        | 4820 | Lichen cartilagineus | Lightf. | No | Squamarina cartilaginea |  | 1337 | LC |  |  | 
          
                                                                                        | 4821 | Lichen cartilagineus | With. | No | Squamarina cartilaginea |  | 1337 | LC |  |  | 
          
                                                                                        | 4822 | Lichen cerinus | Hedw. | No | Caloplaca cerina var. cerina |  | 241 | LC |  |  | 
          
                                                                                        | 4823 | Lichen ceuthocarpus | Sm. | No | Pertusaria pseudocorallina |  | 1089 | LC |  |  | 
          
                                                                                        | 4824 | Lichen chloroleucus | Sm. (1805) | No | Caloplaca stillicidiorum |  | 1991 | LC NS |  |  | 
          
                                                                                        | 4825 | Lichen chrysocephalus | Turner (1804) | No | Chaenotheca chrysocephala |  | 343 | LC |  |  | 
          
                                                                                        | 4826 | Lichen chrysophtalmos | L. (1771) [orth. var.] | No | Teloschistes chrysophthalmos |  | 1380 | CR B, C2, D NR P |  |  | 
          
                                                                                        | 4827 | Lichen chrysophthalmos | L. (1771) | No | Teloschistes chrysophthalmos |  | 1380 | CR B, C2, D NR P |  |  | 
          
                                                                                        | 4828 | Lichen chrysophthalmus | L. (1771) [orth. var.] | No | Teloschistes chrysophthalmos |  | 1380 | CR B, C2, D NR P |  |  | 
          
                                                                                        | 4829 | Lichen ciliaris | L. (1753) | No | Anaptychia ciliaris |  | 45 | EN A2 NS P Eng Wa |  |  | 
          
                                                                                        | 4830 | Lichen cinereus | L. | No | Aspicilia cinerea s. lat. |  | 104 | LC |  |  |