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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3991 | Lecidea ehrhartiana var. polytropa | auct. brit. p.p. | No | Lecanora intricata | 656 | LC | ||||
| 3992 | Lecidea elaeochroma | (Ach.) Ach. | No | Lecidella elaeochroma f. elaeochroma | 797 | LC | ||||
| 3993 | Lecidea elata | Schaer. | No | Lecanora marginata | 1766 | DD NR Sc | ||||
| 3994 | Lecidea emphysa | Stirt. | No | Arthonia sp. | Arthonia ? vinosa | |||||
| 3995 | Lecidea enclitica | auct. brit. | No | Lecidea paraclitica | 758 | DD NR | ||||
| 3996 | Lecidea endocarpicola | Linds. | No | ? Toniniopsis verrucarioides | ||||||
| 3997 | Lecidea endocyanea | Stirt. | No | Schaereria fuscocinerea var. fuscocinerea | 1313 | LC | ||||
| 3998 | Lecidea endoleuca | (Nyl.) Nyl. | No | Bacidia laurocerasi | 155 | LC | ||||
| 3999 | Lecidea endomelaena | Leight. (1876) | Yes | Lecidea endomelaena | 717 | DD NR | Lecidea endomelaena | |||
| 4000 | Lecidea endopella | Leight. ex Cromb. | No | Lecidea turgidula | 787 | LC | ||||
| 4001 | Lecidea enterchlora | Taylor (1879) | No | Lecidella scabra | 802 | LC | ||||
| 4002 | Lecidea epimarta | Nyl. | No | Pycnothelia papillaria | 1211 | LC | ||||
| 4003 | Lecidea epiphorbia | Stirt. (1874) | No | Arthonia peltigerea | 1935 | Needs conf. if type can be traced | NE NR | LF | ||
| 4004 | Lecidea epipolia | auct. brit. p.max.p. | No | Diplotomma alboatrum | 496 | LC | ||||
| 4005 | Lecidea epipolia | auct. brit. p.min.p. | No | Diplotomma hedinii | 498 | LC NS | ||||
| 4006 | Lecidea episema | Nyl. (1853) | No | Kiliasia episema | 1904 | LC | LF | |||
| 4007 | Lecidea epixanthoidiza | auct. p.max.p., non Nyl. | No | Biatora chrysantha | 1830 | LC NS | ||||
| 4008 | Lecidea epixanthoidiza | Nyl., non auct. brit. | No | Biatora efflorescens | 718 | NT NR Sc | ||||
| 4009 | Lecidea erratica | Körb. (1861) | No | Leimonis erratica | 719 | LC | ||||
| 4010 | Lecidea erythrella | (Ach.) Schaer. (1833) | No | Gyalolechia flavovirescens | 255 | LC | ||||
| 4011 | Lecidea erythrophaea | Flörke ex Sommerf. (1826) | Yes | Lecidea erythrophaea | Lecidea tenebricosa auct. p.p. | 720 | VU B NR P Eng Sc | Lecidea erythrophaea | ||
| 4012 | Lecidea euphorea | auct. brit. | No | Lecidella elaeochroma f. elaeochroma | 797 | LC | ||||
| 4013 | Lecidea exanthematica | (Sm.) Nyl. | No | Petractis clausa | 1098 | |||||
| 4014 | Lecidea excentrica | (Ach.) Röhl. (1813) | No | Rhizocarpon petraeum | 1249 | LC | ||||
| 4015 | Lecidea exigua | Chaub. (1821) | No | Traponora varians | 1769 | DD NR | ||||
| 4016 | Lecidea expallens | (Ach.) Borrer (1833) | No | Lecanora expallens | 649 | LC | ||||
| 4017 | Lecidea expallens | sensu Hook. p.p. | No | Lecanora orosthea | 757 | name or specific epithet valid but has been misused in the past | LC | |||
| 4018 | Lecidea expansa | Nyl. (1861) | No | Leimonis erratica | 719 | LC | ||||
| 4019 | Lecidea fecunda | (Th. Fr.) Leight. (1871) | No | Schadonia fecunda | 1310 | VU D2 NR Sc | ||||
| 4020 | Lecidea fecunda | sensu Leight. | No | identity uncertain |