| Gesneria maculata Moc. & Sessé ex DC., 1839 |
| Gesneria rugata Scheidw., 1847 |
| Gesneria schiedeana Hook., 1845 |
| Gesneria spicata Kunth, 1817 |
| Gesneria triflora M. Martens & Galeotii, 1842 |
| Gesneria warszewiczii Bouché & Hanst., 1861 |
| Gesneriaceae Rich. & Juss., 1816 |
| Gesnerieae Dumort., 1829 |
| Gesnerioideae Burnett, 1835 |
| Glossoloma Hanst., 1854 |
| Glossoloma cucullatum (C.V. Morton) J.L. Clark, 2005 |
| Glossoloma tetragonum Hanst., 1854 |
| Gloxinia L'Hér., 1789 |
| Gloxinia antirrhina DC., 1839 |
| Gloxinia fimbriata Hook., 1849 |
| Gloxinia glabrata Zucc., 1832 |
| Gloxinia tigridia Ohlend., 1845 |
| Gloxinia verticillata M. Martens & Galeotti, 1842 |
| Guthnickia Regel, 1849 |
| Guthnickia atrosanguinea (Lindl.) Regel, 1851 |