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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5491 | Miriquidica pycnocarpa f. sorediata | (Coppins & Fryday) Coppins & Aptroot (2008) | Yes | Miriquidica pycnocarpa f. sorediata | Lecidea pycnocarpa f. sorediata | 1771 | LC NS | Miriquidica pycnocarpa f. sorediata | ||
| 5492 | Miriquidica subplumbea | (Anzi) Cl. Roux (2011) | Yes | Miriquidica subplumbea | Lecidea inserena; Miriquidica griseoatra auct. p.p. | 2641 | NE NS | Miriquidica subplumbea | ||
| 5493 | Mischoblastia oxydata | A. Massal. (1852) | Yes | Mischoblastia oxydata | Rinodina oxydata | 1295 | LC NS | Mischoblastia oxydata | ||
| 5494 | Mixtoconidium canariense | Etayo (1995) | No | Mixtoconidium insidiens | 2749 | LF | ||||
| 5495 | Mixtoconidium insidens | (Vouaux) Etayo & van den Boom (2017) | Yes | Mixtoconidium insidens | Mixtocondium canariense | 2749 | lichenicolous on Ramalina; Ireland only, as anamorph | NE | LF | Mixtoconidium insidens |
| 5496 | Mniaecia albida | (P. Crouan & H. Crouan) Priou & Baral (2020) | Yes | Mniaecia albida | 2790 | NE NR | F | Mniaecia albida | ||
| 5497 | Mniaecia jungermanniae | (Nees ex Fr.) Boud. (1906) | Yes | Mniaecia jungermanniae | 904 | LC | F | Mniaecia jungermanniae | ||
| 5498 | Mniaecia nivea | (P. Crouan & H. Crouan) Boud. (1907) | Yes | Mniaecia nivea | 905 | NE NR | F | Mniaecia nivea | ||
| 5499 | Moelleropsis humida | (Kullh.) Coppins & P.M. Jørg. (1993) | No | Gregorella humida | 1879 | LC NR | ||||
| 5500 | Moelleropsis nebulosa | (Hoffm.) Gyeln. (1940) | No | Fuscopannaria nebulosa | 906 | LC NS | ||||
| 5501 | Monerolechia badia | (Fr.) Kalb (2004) | Yes | Monerolechia badia | Buellia badia | 1546 | LC NS | Monerolechia badia | ||
| 5502 | Monodictys anaptychiae | (Lindau) D. Hawksw. (1975) | Yes | Monodictys anaptychiae | 2112 | NE NR | LF | Monodictys anaptychiae | ||
| 5503 | Monodictys cellulosa | S. Hughes (1958) | Yes | Monodictys cellulosa | Monodictys lepraria | 2113 | NE NR | LF | Monodictys cellulosa | |
| 5504 | Monodictys epilepraria | Kukwa & Diederich (2005) | Yes | Monodictys epilepraria | 2433 | NE NR | LF | Monodictys epilepraria | ||
| 5505 | Monodictys fuliginosa | Etayo (1996) | Yes | Monodictys fuliginosa | 2114 | NE NR | LF | Monodictys fuliginosa | ||
| 5506 | Monodictys lepraria | (Berk.) M.B. Ellis | No | Monodictys cellulosa | 2113 | NE NR | LF | |||
| 5507 | Montanelia disjuncta | (Erichsen) Divakar, A. Crespo, Wedin & Essl. (2012) | Yes | Montanelia disjuncta | Melanelia disjuncta; Parmelia disjuncta | 992 | LC NS | Montanelia disjuncta | ||
| 5508 | Mosigia illita | (Nyl.) R. Sant. | No | Rimularia badioatra | 733 | LC NS | ||||
| 5509 | Mosigia intercedens | (H. Magn.) R. Sant. | No | Rimularia intercedens | 1633 | LC NS | ||||
| 5510 | Mucor furfuraceus | L. (1753) | No | Coniocybe furfuracea | 466 | LC | ||||
| 5511 | Muellerella atricola | (Linds.) Sacc. & D. Sacc. | No | ? Muellerella lichenicola {LF} | LF | |||||
| 5512 | Muellerella erratica | (A. Massal.) Hafellner & Volk. John (2006) | Yes | Muellerella erratica | Muellerella pygmaea var. athallina | 2119 | NE NR | LF | Muellerella erratica | |
| 5513 | Muellerella haplotella | (Nyl.) Arnold ex Zopf (1896) | Yes | Muellerella haplotella | Muellerella polyspora auct. brit. | 2117 | lichenicolous fungus on Arthonia radiata | NE NR | LF | Muellerella haplotella |
| 5514 | Muellerella hospitans | Stizenb. (1863) | Yes | Muellerella hospitans | 2115 | NE NR | LF | Muellerella hospitans | ||
| 5515 | Muellerella lichenicola | (Sommerf.) D. Hawksw. (1979) | Yes | Muellerella lichenicola | 2116 | LC | LF | Muellerella lichenicola | ||
| 5516 | Muellerella opegraphicola | Zopf (1896) | No | Muellerella haplotella | 2117 | NE NR | LF | |||
| 5517 | Muellerella polyspora | auct. brit. non Hepp ex Müll. Arg. (1862) | No | Muellerella haplotella | 2117 | NE NR | LF | |||
| 5518 | Muellerella pygmaea | (Körb.) D. Hawksw. (1979) | Yes | Muellerella pygmaea | 2118 | LC | LF | Muellerella pygmaea | ||
| 5519 | Muellerella pygmaea var. athallina | (Müll. Arg.) Triebel | No | Muellerella erratica | 2119 | NE NR | LF | |||
| 5520 | Muellerella pygmaea var. ventosicola | (Mudd) Triebel | No | Muellerella ventosicola | 2120 | NE NR | LF |