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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2761 | Gallowayella fulva | (Hoffm.) S.Y. Kondr. et al. (2012) | No | Xanthmendoza fulva | 1918 | DD NR | ||||
| 2762 | Gallowayiopsis collaris | (Orange) S.Y. Kondr. (2022) | No | Trapelia collaris | 2709 | NE | ||||
| 2763 | Gallowayiopsis glebulosa | (Sm) S.Y. Kondr. (2022) | No | Trapelia gebulosa s. str. | 2713 | LC | ||||
| 2764 | Gallowayiopsis obtegens | (Th. Fr.) S.Y. Kondr. (2022) | No | Trapelia obtegens | 1434 | LC | ||||
| 2765 | Geisleria jamesii | Swinscow (1975) | No | Swinscowia jamesii | 1375 | LC NS | ||||
| 2766 | Gelatinopsis ericetorum | (Körb.) Rambold & Triebel | No | Rhymbocarpus ericetorum | 2066 | LC NR | LF | |||
| 2767 | Geltingia associata | (Th. Fr.) Alstrup & D. Hawksw. (1990) | Yes | Geltingia associata | Lecidea associata Nesolechia associata |
1943 | LC NS | LF | Geltingia associata | |
| 2768 | Geltingia groenlandiae | Alstrup & D. Hawksw. | No | Llimoniella groenlandiae | 2105 | NE NR | LF | |||
| 2769 | Geltingia groenlandiae | No | 1944 | BLS number no longer used | ||||||
| 2770 | Gerronema ericetorum | (Pers.) Singer (1973) | No | Lichenomphalia ericetorum | 931 | LC | ||||
| 2771 | Gilbertaria contristans | (Nyl.) M. Svensson & Fryday (2022) | Yes | Gilbertaria contristans | Catillaria contristans | 309 | LC NS | Gilbertaria contristans | ||
| 2772 | Gilbertaria holomeloides | (Nyl.) M. Svensson & Fryday (2022) | Yes | Gilbertaria holomeloides | 2831 | NE NR | Gilbertaria holomeloides | |||
| 2773 | Gilbertaria squalescens | (Nyl.) M. Svensson & Fryday (2022) | Yes | Gilbertaria squalescens | Toninia squalescens | 1426 | LC NR Sc | Gilbertaria squalescens | ||
| 2774 | Girardia atrovirens | (Dillwyn) Gray | No | Ephebe lanata | 509 | LC | ||||
| 2775 | Glaucomaria carpinea | (L.) S.Y. Kondr., L. Lőkös & Farkas (2019) | Yes | Glaucomaria carpinea | Lecanora carpinea | 636 | LC | Glaucomaria carpinea | ||
| 2776 | Glaucomaria rupicola var. efflorens | (Leuckert & Poelt) auct. | Yes | Glaucomaria rupicola var. efflorens | Lecanora rupicola f. sorediata; Lecanora rupicola var. efflorens | 1767 | LC NS | Glaucomaria rupicola var. efflorens | ||
| 2777 | Glaucomaria rupicola var. rupicola | (L.) P.F. Cannon (2022) | Yes | Glaucomaria rupicola var. rupicola | Lecanora rupicola var. rupicola | 674 | LC | Glaucomaria rupicola var. rupicola | ||
| 2778 | Glaucomaria swartzii | (Ach.) S.Y. Kondr., L. Lőkös & Farkas (2019) | Yes | Glaucomaria swartzii | Lecanora subradiosa; Lecanora swartzii | 687 | LC NR | Glaucomaria swartzii | ||
| 2779 | Gloeolecta bryophaga | (Körb. ex Arnold) Vezda | No | Cryptodiscus gloeocapsa | 187 | LC NS | ||||
| 2780 | Gloeopeziza crozalsii | sensu Dennis | No | Vezdaea retigera | 1522 | LC NS M* | ||||
| 2781 | Gloniopsis watsonii | Rilstone (1940) | No | Allographa anomala | 531 | LC NS Sc IR | ||||
| 2782 | Glyphis labyrinthica | auct. brit. | No | Syncesia myrticola | 352 | NT NS IR | ||||
| 2783 | Gomphillus calycioides | (Delise ex Duby) Nyl. (1853) | Yes | Gomphillus calycioides | 528 | NT NS P Sc WaL IR | Gomphillus calycioides | |||
| 2784 | Gonatophragmium lichenophilum | F. Berger & U. Braun (2015) | Yes | Gonatophragmium lichenophilum | 2687 | on Xanthoria parietina | NE NR | LF | Gonatophragmium lichenophilum | |
| 2785 | Gongylia incarnata | (Th. Fr. & Graewe) Zahlbr. (1903) | No | Belonia incarnata | 178 | LC NS M* | ||||
| 2786 | Gongylia sabuletorum | (Fr.) Stein | No | Arthrorhaphis grisea | 313 | LC NS | LF | |||
| 2787 | Gongylia viridis | A.L. Sm. | No | Arthrorhaphis grisea | 313 | LC NS | LF | |||
| 2788 | Gonionema compactum | (Agardh) Nyl. | No | Scytonema | non-lichenized Scytonema sp. {cyanobacterium} | CBM | ||||
| 2789 | Gonionema velutinum | (Ach.) Nyl. | No | Thermutis velutina | 1413 | NT NR Sc | ||||
| 2790 | Gowardia nigricans | (Ach.) P. Halonen, L. Myllys, S. Velmala & H. Hyvären | No | Alectoria nigricans | 39 | currently a synonym but may be adopted as the correct name in the future | LC |