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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4951 | Lichen luteoalbus | Turner (1804) | No | Cerothallia luteoalba | 266 | EN A2, C1 NS P Eng Sc Wa S8 | ||||
| 4952 | Lichen lutescens | Hoffm. | No | Pertusaria flavida | 1073 | LC | ||||
| 4953 | Lichen luteus | Dicks. (1785) | No | Coenogonium luteum | 490 | LC L* | ||||
| 4954 | Lichen lynceus | Sm. | No | Lecanographa lyncea | 600 | LC Sc IR | ||||
| 4955 | Lichen madreporiformis | With. (1776) | No | Pycnothelia papillaria | 1211 | LC | ||||
| 4956 | Lichen madreporæformis | With. (1776) [orth. var.] | No | Pycnothelia papillaria | 1211 | LC | ||||
| 4957 | Lichen marginalis | Huds. (1778) | No | Lathagrium cristatum var. marginale | 443 | LC ?NS | ||||
| 4958 | Lichen marginatus | Bernh. (1799) | No | Blennothallia crispa | 440 | LC | ||||
| 4959 | Lichen marmoreus | With. (1796), p.max.p, non Scop (1772) | No | Secoliga jenensis | 539 | LC | ||||
| 4960 | Lichen melaleucus | Sm. | No | Pertusaria pustulata | 1092 | VU B NR Eng | ||||
| 4961 | Lichen melanocarpus | Sw. | No | Bunodophoron melanocarpum | 1334 | LC | ||||
| 4962 | Lichen membranaceus | Dicks. | No | Lepraria membranacea | 1603 | LC | ||||
| 4963 | Lichen microcephalus | Sm. | No | Sphinctrina anglica | 1957 | DD NR | LF | |||
| 4964 | Lichen microphyllus | Sm. (1807), non Lilj. (1792) | No | Cladonia peziziformis | 365 | CR A NR P Eng Sc Wa | ||||
| 4965 | Lichen microsticticus | Sm. | No | Sclerococcum sphaerale | 1848 | LC | LF | |||
| 4966 | Lichen miniatus | L. | No | Dermatocarpon miniatum | 484 | LC | ||||
| 4967 | Lichen multifidus | auct. brit. p.p. | No | Xanthoparmelia mougeotii | 1005 | LC | ||||
| 4968 | Lichen multifidus | Dicks. (1793) | No | Arctoparmelia incurva | 1000 | LC | ||||
| 4969 | Lichen multifidus | Scop. (1772) | No | Lathagrium cristatum var. marginale | 443 | LC ?NS | ||||
| 4970 | Lichen multipunctus | (Turner) Sm. (1809) | No | Lepra multipuncta | 1083 | LC | ||||
| 4971 | Lichen niger | Huds. | No | Placynthium nigrum | 1139 | LC | ||||
| 4972 | Lichen nigrescens | Huds. | No | Collema nigrescens | 453 | NT NS Sc | ||||
| 4973 | Lichen nivalis | L. | No | Flavocetraria nivalis | 336 | NT NS Sc | ||||
| 4974 | Lichen obliterattus | Pers. (1794) | No | Calogaya obliteratta | 236 | LC | ||||
| 4975 | Lichen obscurus | sensu With. (1796) | No | Anaptychia runcinata | 47 | LC | ||||
| 4976 | Lichen obscurus | Sm. & Sowerby (1807), non Ach. | No | Enterographa crassa | 504 | LC | ||||
| 4977 | Lichen omphalodes | L. | No | Parmelia omphalodes | 1006 | LC | ||||
| 4978 | Lichen orbicularis | With., non Neck. | No | Physconia distorta | 1130 | LC | ||||
| 4979 | Lichen palmatus | Huds. (1778) | No | Scytinium palmatum | 842 | NT NS Sc | ||||
| 4980 | Lichen parasiticus | Sm. (1808), non Hoffm. (1784) | No | Abrothallus parmeliarum | 2004 | LC NS | LF |