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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5401 | Micarea xanthonica | Coppins & Tønsberg (2001) | Yes | Micarea xanthonica | 2293 | LC NS Sc IR | Micarea xanthonica | |||
| 5402 | Microcalicium ahlneri | Tibell (1978) | Yes | Microcalicium ahlneri | 1441 | LC NS | F | Microcalicium ahlneri | ||
| 5403 | Microcalicium arenarium | (Hampe ex A. Massal.) Tibell (1978) | Yes | Microcalicium arenarium | Coniocybopsis arenaria | 1951 | LC NR | LF | Microcalicium arenarium | |
| 5404 | Microcalicium disseminatum | (Ach.) Vain. (1927) | Yes | Microcalicium disseminatum | Microcalicium subpedicillatum | 1442 | LC NR | F | Microcalicium disseminatum | |
| 5405 | Microcalicium subpedicellatum | (Schaer.) Tibell (1978) | No | Microcalicium disseminatum | 1442 | Microcalicium disseminatum {F or LF} | LC NR | F | ||
| 5406 | Microcera physciae | Crous & Boers (2021) | Yes | Microcera physciae | 2884 | NE NR | LF | Microcera physciae | ||
| 5407 | Microdiplodia ferrugineae | Vouaux (1914) | No | Lichenodiplis lecanorae | 2096 | LC NS | LF | |||
| 5408 | Microdiplodia lecanorae | Vouaux (1914) | No | Lichenodiplis lecanorae | 2096 | LC NS | LF | |||
| 5409 | Microglaena breadalbanensis | Wheldon & A. Wilson | No | Protothelenella corrosa | 898 | LC NS | ||||
| 5410 | Microglaena corrosa | (Körb.) Arnold | No | Protothelenella corrosa | 898 | LC NS | ||||
| 5411 | Microglaena holliana | A.L. Sm. | No | ? Thelenella muscorum var. octospora | ||||||
| 5412 | Microglaena isidioides | (Borrer) A.L. Sm. | No | Leucodecton isidioides | 1409 | NE (Ireland only) | ||||
| 5413 | Microglaena larbalestieri | A.L. Sm. | No | Thelenella larbalestieri | 899 | VU D2 NR E Sc IR | ||||
| 5414 | Microglaena leucothelia | (Nyl.) Arnold (1870) | No | Protothelenella leucothelia | 1794 | but British records doubtful | ||||
| 5415 | Microglaena modesta | (Nyl.) A.L. Sm. | No | Thelenella modesta | 900 | CR B NR P Sc | ||||
| 5416 | Microglaena muscorum | (Fr.) Th. Fr. | No | Thelenella muscorum var. muscorum | 901 | LC | ||||
| 5417 | Microglaena muscorum var. octospora | (Nyl.) Cretz. | No | Thelenella muscorum var. octospora | 1778 | NE NR Sc | ||||
| 5418 | Microglaena nuda | Wheldon & Travis | No | Verrucaria sp. | Verrucaria sp. | |||||
| 5419 | Microglaena sericea | (A. Massal.) Lönnr. | No | Julella sericea | 1945 | LC NR | F | |||
| 5420 | Microglaena sphinctrinoidella | (Nyl.) Arnold | No | Protothelenella sphinctrinoidella | 902 | LC NS | ||||
| 5421 | Microglaena sphinctrinoides | (Nyl.) Lönnr. | No | Protothelenella sphinctrinoides | 903 | NT NR | ||||
| 5422 | Micropeltopsis cetrariicola | (Nyl.) Vain. | No | Lichenopeltella cetrariicola | 2098 | NE NR | LF | |||
| 5423 | Microphiale diluta | (Pers.) Zahlbr. (1904) | No | Coenogonium pineti | 489 | LC | ||||
| 5424 | Microphiale lutea | (Dicks.) Zahlbr. (1902) | No | Coenogonium luteum | 490 | LC L* | ||||
| 5425 | Microthelia alcicornaria | Linds. | No | Lichenosticta alcicornaria | 2101 | NE NR | LF | |||
| 5426 | Microthelia baeomycearia | Linds. | No | ? Pyrenidium actinellum {LF} | LF | |||||
| 5427 | Microthelia calcaricola | Mudd (1861) | No | Endococcus rugulosus | 2061 | NE NR | LF | |||
| 5428 | Microthelia cookei | Linds. | No | Muellerella lichenicola | 2116 | LC | LF | |||
| 5429 | Microthelia dispora | A.L. Sm. | No | Polycoccum dzieduszyckii | 2159 | NE NR | LF | |||
| 5430 | Microthelia dispora f. octospora | Walt. Watson | No | Polycoccum marmoratum | 2161 | NE NR | LF |