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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3511 | Lecanora invadens | H. Magn. (1940) | No | Myriolecis invadens | 2585 | NE NR | ||||
| 3512 | Lecanora inversa | Nyl. | No | Lecanora alboflavida | 628 | LC NS | ||||
| 3513 | Lecanora involuta | Taylor (1836) | No | Trapelia involuta s. str. | 2711 | LC | ||||
| 3514 | Lecanora irrubata | (Ach.) Nyl. | No | Protoblastenia rupestris | 1189 | LC | ||||
| 3515 | Lecanora irrubata f. incrustans | (DC.) Cromb. | No | Protoblastenia incrustans | 1188 | LC | ||||
| 3516 | Lecanora irrubata subsp. siebenhaariana | (Körb.) Cromb. | No | Protoblastenia siebenhaariana | 1190 | LC NS | ||||
| 3517 | Lecanora isidioides | (Borrer) Nyl. | No | Rinodina isidioides | 1291 | NT NS P Eng Sc Wa IR | ||||
| 3518 | Lecanora jamesii | J.R. Laundon (1963) | Yes | Lecanora jamesii | Lecanora impudens sensu P. James (1960) | 658 | LC | Lecanora jamesii | ||
| 3519 | Lecanora lactea f. ostreaseda | auct. brit., ? non (Harm.) Zahlbr. | No | Xanthocarpia fulva | 264 | LC | ||||
| 3520 | Lecanora lacustris | (With.) Nyl. | No | Ionaspis lacustris | 573 | LC | ||||
| 3521 | Lecanora laevata | (Ach.) Nyl. | No | Aspicilia laevata | 115 | LC NS | ||||
| 3522 | Lecanora laevis | Poelt | No | Lecanora horiza | 1764 | NT NS Sc | ||||
| 3523 | Lecanora laevis | No | 659 | BLS number no longer used | ||||||
| 3524 | Lecanora lentigera | (Weber) Ach. | No | Squamarina lentigera | 1339 | CR C2 NR P Eng S8 | ||||
| 3525 | Lecanora leprosescens | Sandst. (1904) | No | Circinaria leprosescens | 116 | LC | ||||
| 3526 | Lecanora leprothelia | Nyl. (1874) | No | Toensbergia geminipara | 923 | NT NR Sc | ||||
| 3527 | Lecanora leptacina | Sommerf. (1826) | Yes | Lecanora leptacina | 660 | LC NS | Lecanora leptacina | |||
| 3528 | Lecanora leucophaea | (Flörke ex Rabenh.) Nyl. (1870) | No | Miriquidica leucophaea | 739 | LC | ||||
| 3529 | Lecanora leucophaea var. conglobata | auct. brit. | No | Miriquidica leucophaea | 739 | LC | ||||
| 3530 | Lecanora leucophaeiza | Nyl. | No | Miriquidica leucophaea | 739 | LC | ||||
| 3531 | Lecanora leucophyma | Leight. | No | Koerberiella wimmeriana | 117 | LC NS | ||||
| 3532 | Lecanora leucospeirea | Nyl. | No | Solenopsora vulturiensis | 1326 | LC | ||||
| 3533 | Lecanora lilliei | (B. de Lesd.) A.L. Sm. (1912) | No | ? Circinaria calcarea | ||||||
| 3534 | Lecanora lindsayi | (Walt. Watson) Cretz. (1941) | No | Glaucomaria rupicola var. rupicola | 674 | LC | ||||
| 3535 | Lecanora lusca | Nyl. | No | Aspicilia laevata | 115 | LC NS | ||||
| 3536 | Lecanora luteoalba | (Turner) Duby (1830) | No | Cerothallia luteoalba | 266 | EN A2, C1 NS P Eng Sc Wa S8 | ||||
| 3537 | Lecanora mammillifera | Stirt. | No | Fuscidea kochiana | 520 | LC | ||||
| 3538 | Lecanora marginata | auct. brit., non (Schaer.) Hertel & Rambold | No | Lecanora atromarginata | 1765 | VU D2 NR Sc | ||||
| 3539 | Lecanora marginata | (Schaer.) Hertel & Rambold (1985) | Yes | Lecanora marginata | Lecidea marginata | 1766 | DD NR Sc | Lecanora marginata | ||
| 3540 | Lecanora melanaspis | (Ach.) Ach. (1810) | No | Lobothallia melanaspis | 120 | EN D NR P Sc |