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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4501 | Lecidea turneriana | Ach. (1810) | No | Kuettlingeria atroflava | 237 | CR D NR P Wa | ||||
| 4502 | Lecidea uliginascens | Stirt. | No | Placynthiella hyporhoda | 1788 | LC NR | ||||
| 4503 | Lecidea uliginosa | auct. brit. p.p. | No | Placynthiella icmalea | 732 | LC | ||||
| 4504 | Lecidea uliginosa | (Schrad.) Ach. | No | Placynthiella uliginosa | 788 | LC | ||||
| 4505 | Lecidea uliginosa var. humosa | sensu Leight., non (Hoffm.) Ach. | No | Placynthiella oligotropha | 756 | LC NS | ||||
| 4506 | Lecidea ulmicola | (DC.) Borrer ex Hook. | No | Cerothallia luteoalba | 266 | EN A2, C1 NS P Eng Sc Wa S8 | ||||
| 4507 | Lecidea umbonata | auct. brit., non (Hepp) Mudd | No | Cecidonia umbonella | 789 | LC NS | LF | |||
| 4508 | Lecidea umbonella | Nyl. | No | Cecidonia umbonella | 789 | LC NS | LF | |||
| 4509 | Lecidea umbonella var. alumnula | (Nyl.) Hertel | No | Cecidonia xenophana | 1838 | LC NS | LF | |||
| 4510 | Lecidea umbrina | Ach. | No | Scoliciosporum umbrinum | 1322 | LC | ||||
| 4511 | Lecidea umbrina var. compacta | (Körb.) Leight. | No | Scoliciosporum umbrinum | 1322 | LC | ||||
| 4512 | Lecidea umbrinella | Nyl. (1876) | No | Catillaria lenticularis | 311 | LC | ||||
| 4513 | Lecidea urceolata | auct. brit., non Ach. | No | Bactrospora homalotropa | 599 | LC NS Sc IR | ||||
| 4514 | Lecidea vainioi | H. Magn. | No | Brianaria sylvicola | 893 | LC | ||||
| 4515 | Lecidea valentior | Nyl. | No | Bryobilimbia ahlesii | 790 | LC NS | ||||
| 4516 | Lecidea varians | Ach. (1814) | No | Traponora varians | 1769 | DD NR | ||||
| 4517 | Lecidea vernalis | (L.) Ach. (1803) | No | Biatora vernalis | 791 | LC NS | ||||
| 4518 | Lecidea vernalis subsp. minor | sensu A.L. Sm. | No | Lecania cyrtellina | 614 | LC | ||||
| 4519 | Lecidea verruculosa | (Sm.) Borrer | No | Buellia aethalea | 200 | LC | ||||
| 4520 | Lecidea verruculosa | auct. p.p. | No | Buellia ocellata | 219 | LC | ||||
| 4521 | Lecidea verruculosa var. praeponens | (Nyl.) Leight. | No | Buellia ocellata | 219 | LC | ||||
| 4522 | Lecidea vesicularis | (Hoffm.) Ach. (1803) | No | Thalloidima sedifolium | 1416 | LC P Eng Wa | ||||
| 4523 | Lecidea viridans | (Flot.) Lamy | No | Lecidella viridans | 805 | DD NR Sc | ||||
| 4524 | Lecidea viridescens | (Schrad.) Ach. | No | Trapeliopsis viridescens | 792 | DD NR Sc | ||||
| 4525 | Lecidea viridiatra | auct. brit. | No | Lecidea lapicida | 738 | LC | ||||
| 4526 | Lecidea vitellinaria | Nyl. | No | Carbonea vitellinaria | 1880 | LC NS | LF | |||
| 4527 | Lecidea vorticosa | (Flörke) Körb. | No | Carbonea vorticosa | 793 | LC NS | ||||
| 4528 | Lecidea wallrothii | (Tul.) Nyl. (1866), non Flörke ex Spreng. (1821) | No | Scutula miliaris | 2201 | NE ? | LF | |||
| 4529 | Lecidea wallrothii | Flörke ex Spreng. | No | Trapeliopsis wallrothii | 1437 | LC | ||||
| 4530 | Lecidea watsonii | P. James (1965) | No | Lecidea lichenicola | 740 | nom. nov. for Thrombium cretaceum | LC NS ?E IR |