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 | Gilbertaria squalescens | (Nyl.) M. Svensson & Fryday (2022) | Yes | Gilbertaria squalescens | Toninia squalescens | 1426 | LC NR Sc | Gilbertaria squalescens | ||
| 2762 | Girardia atrovirens | (Dillwyn) Gray | No | Ephebe lanata | 509 | LC | ||||
| 2763 | Glaucomaria carpinea | (L.) S.Y. Kondr., L. Lőkös & Farkas (2019) | Yes | Glaucomaria carpinea | Lecanora carpinea | 636 | LC | Glaucomaria carpinea | ||
| 2764 | 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 | ||
| 2765 | Glaucomaria rupicola var. rupicola | (L.) P.F. Cannon (2022) | Yes | Glaucomaria rupicola var. rupicola | Lecanora rupicola var. rupicola | 674 | LC | Glaucomaria rupicola var. rupicola | ||
| 2766 | Glaucomaria swartzii | (Ach.) S.Y. Kondr., L. Lőkös & Farkas (2019) | Yes | Glaucomaria swartzii | Lecanora subradiosa; Lecanora swartzii | 687 | LC NR | Glaucomaria swartzii | ||
| 2767 | Gloeolecta bryophaga | (Körb. ex Arnold) Vezda | No | Cryptodiscus gloeocapsa | 187 | LC NS | ||||
| 2768 | Gloeopeziza crozalsii | sensu Dennis | No | Vezdaea retigera | 1522 | LC NS M* | ||||
| 2769 | Gloniopsis watsonii | Rilstone (1940) | No | Allographa anomala | 531 | LC NS Sc IR | ||||
| 2770 | Glyphis labyrinthica | auct. brit. | No | Syncesia myrticola | 352 | NT NS IR | ||||
| 2771 | Gomphillus calycioides | (Delise ex Duby) Nyl. (1853) | Yes | Gomphillus calycioides | 528 | NT NS P Sc WaL IR | Gomphillus calycioides | |||
| 2772 | Gonatophragmium lichenophilum | F. Berger & U. Braun (2015) | Yes | Gonatophragmium lichenophilum | 2687 | on Xanthoria parietina | NE NR | LF | Gonatophragmium lichenophilum | |
| 2773 | Gongylia incarnata | (Th. Fr. & Graewe) Zahlbr. (1903) | No | Belonia incarnata | 178 | LC NS M* | ||||
| 2774 | Gongylia sabuletorum | (Fr.) Stein | No | Arthrorhaphis grisea | 313 | LC NS | LF | |||
| 2775 | Gongylia viridis | A.L. Sm. | No | Arthrorhaphis grisea | 313 | LC NS | LF | |||
| 2776 | Gonionema compactum | (Agardh) Nyl. | No | Scytonema | non-lichenized Scytonema sp. {cyanobacterium} | CBM | ||||
| 2777 | Gonionema velutinum | (Ach.) Nyl. | No | Thermutis velutina | 1413 | NT NR Sc | ||||
| 2778 | 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 | |||
| 2779 | Graphina anguina | auct. europ. | No | Graphis inustuloides | 529 | LC | ||||
| 2780 | Graphina anguina var. pulverulenta | sensu A.L. Sm. | No | Graphis inustuloides | 529 | LC | ||||
| 2781 | Graphina inustula | A.L. Sm. (1911) | No | Graphis inustuloides | 529 | LC | ||||
| 2782 | Graphina pauciloculata | Coppins & P. James (1978) | No | Allographa pauciloculata | 530 | VU D2 NR E P Eng Wa IR | ||||
| 2783 | Graphina ruiziana | auct. brit. non (Fée) Müll. Arg. (1887) | No | Allographa anomala | 531 | LC NS Sc IR | ||||
| 2784 | Graphina ruiziana var. anomala | (Leight.) Zahlbr. (1924) | No | Allographa anomala | 531 | LC NS Sc IR | ||||
| 2785 | Graphis alboscripta | Coppins & P. James (1992) | No | Fissurina alboscripta | 1702 | NT NR E P Sc IR | ||||
| 2786 | Graphis betulina | (Pers.) Ach. (1809) | Yes | Graphis betulina | 2862 | A segregate from Graphis scripta | NE NR | Graphis betulina | ||
| 2787 | Graphis britannica | Staiger (2002) | No | Graphis inustuloides | 529 | LC | ||||
| 2788 | Graphis chlorotica | A. Massal. ex Kremp. (1871) | Yes | Graphis chlorotica | 2833 | NE NR | Graphis chlorotica | |||
| 2789 | Graphis crebra | Vain. (1899) | Yes | Graphis crebra | 2838 | NE NR | Graphis crebra | |||
| 2790 | Graphis dendritica | (Ach.) Ach. (1810) | No | Phaeographis dendritica | 1100 | LC Sc |