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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2521 | Diplotomma pulverulentum | (Anzi) D. Hawksw. (2002) | No | Tetramelas pulverulentus | 1855 | NE NR Sc | ||||
| 2522 | Diplotomma venustum | auct. brit. | No | Diplotomma hedinii | 498 | LC NS | ||||
| 2523 | Diplotomma vezdanum | (P. Scholz & Knoph) Coppins (2002) | Yes | Diplotomma vezdanum | Buellia vezdana | 2339 | lichenicolous lichen on Caloplaca verruculifera | NE NR | Diplotomma vezdanum | |
| 2524 | Diplotomma weisii | sensu auct. brit. | No | Rhizocarpon umbilicatum | 1279 | LC | ||||
| 2525 | Dirina fallax | De Not. (1846) | Yes | Dirina fallax | Dirina massiliensis auct. p.p. | 2622 | No name available for the sorediate morph | NE | Dirina fallax | |
| 2526 | Dirina massiliensis f. massiliensis | Durieu & Mont. (1847) | Yes | Dirina massiliensis f. massiliensis | Dirina repanda | 499 | NT NS | Dirina massiliensis f. massiliensis | ||
| 2527 | Dirina massiliensis f. sorediata | auct. brit. | Yes | Dirina massiliensis f. sorediata | Dirina repanda f. stenhammarii; Dirina stenhammarii; Lecanactis stenhammarii | 500 | sorediate morph | LC | Dirina massiliensis f. sorediata | |
| 2528 | Dirina repanda | auct. brit. | No | Dirina massiliensis f. massiliensis | 499 | NT NS | ||||
| 2529 | Dirina repanda f. stenhammarii | (Fr. ex Stenh.) Clauzade & Cl. Roux | No | Dirina massiliensis f. sorediata | 500 | LC | ||||
| 2530 | Dirina stenhammarii | (Fr. ex Stenh.) Poelt & Follmann | No | Dirina massiliensis f. sorediata | 500 | LC | ||||
| 2531 | Discocera lichenicola | A.L. Sm. & Ramsb. (1918) | No | Trapelia glebulosa s. str. | 2713 | LC | ||||
| 2532 | Discothecium acervatum | (Stirt.) A.L. Sm. | No | Polycoccum trypethelioides | 2169 | NT NR | LF | |||
| 2533 | Discothecium calcaricola | (Mudd) Vouaux (1913) | No | Endococcus rugulosus | 2061 | NE NR | LF | |||
| 2534 | Discothecium gemmiferum | auct. | No | Endococcus propinquus | 2060 | LC NS | LF | |||
| 2535 | Discothecium gemmiferum var. brachysporum | (Zopf) Vouaux (1913) | No | Endococcus brachysporus | 2295 | LC NR | LF | |||
| 2536 | Discothecium gemmiferum var. calcaricola | (Mudd) Keissl. (1930) | No | Endococcus rugulosus | 2061 | NE NR | LF | |||
| 2537 | Discothecium gemmiferum var. physciicola | (Nyl.) Vouaux | No | ? Endococcus parietinus | LF | |||||
| 2538 | Discothecium squamarioides | (Mudd) Keissl. | No | Polycoccum squamarioides | 2168 | NE NR | LF | |||
| 2539 | Discothecium stereocaulicola | (Linds.) Vouaux | No | Polycoccum trypethelioides | 2169 | NT NR | LF | |||
| 2540 | Discothecium stigma | auct. | No | Endococcus perpusillus | 2059 | NE NR | LF | |||
| 2541 | Doratomyces phillipsii | (Berk. & Leight.) F.J. Morton & G. Sm. (1963) | No | Leightoniomyces phillipsii | 2080 | NE NR | LF | |||
| 2542 | Duncaneana Coppins | ad int. | No | Placynthiella sp. | Placynthiella | |||||
| 2543 | Echinodiscus lesdainii | (Vouaux) Etayo & Diederich (2000) | No | Neoechinodiscus lesdainii | 2294 | NE NR | LF | |||
| 2544 | Echinothecium glabrum | M.S. Christ., Alstrup & D. Hawksw. | No | Sphaerellothecium araneosum | 2213 | NE NR | LF | |||
| 2545 | Eiglera flavida | (Hepp) Hafellner (1984) | Yes | Eiglera flavida | Aspicilia flavida Lecanora flavida |
110 | LC NR | Eiglera flavida | ||
| 2546 | Elixia flexella | (Ach.) Lumbsch (1997) | Yes | Elixia flexella | Lithographa flexella Ptychographa flexella |
1209 | NT NR Sc | Elixia flexella | ||
| 2547 | Ellisembia lichenicola | Heuchert & Braun (2006) | Yes | Ellisembia lichenicola | 2905 | NE NR | LF | Ellisembia lichenicola | ||
| 2548 | Encephalographa cerebrina | (DC.) A. Massal. | No | Poeltinula cerebrina | 501 | VU B NR P Eng Sc | ||||
| 2549 | Encephalographa interjecta | (Leight.) Th. Fr. | No | Melaspilea interjecta | 1719 | DD NR Sc IR | ||||
| 2550 | Enchylium bachmanianum | (Fink) Otálora, P.M. Jørg. & Wedin (2013) | Yes | Enchylium bachmanianum | Collema bachmannianum | 434 | NT NS Sc IR | Enchylium bachmanianum |