| Fusichalara dimorphospora S. Hughes & Nag Raj, 1973 |
| Fusichalara minuta Hol.-Jech., 1976 |
| Gangliostilbe Subram. & Vittal, 1976 |
| Gangliostilbe costaricensis Mercado, Gené & Guarro, 1997 |
| Gephyria Arnott, 1858 |
| Gephyria media Arnott, 1860 |
| Gliomastix Guég., 1905 |
| Gliomastix luzulae (Fuckel) E. W. Mason ex S. Hughes, 1958 |
| Gliomastix protea (Sacc.) Verona & G. Castellá, 1942 |
| Gloeotromera Ervin, 1956 |
| Gloeotromera pululahuana (Pat.) Ervin, 1956 |
| Gomphonemopsis Medlin, 1986 |
| Gomphonemopsis exigua (Kütz.) Medlin, 1986 |
| Gomphonemopsis obscura (Krasske) Lange-Bert. |
| Gomphonemopsis pseudexigua (Simonsen) Medlin, 1986 |
| Gomphoseptatum Medlin, 1986 |
| Gomphoseptatum aestuarii (Cleve) L.K. Medlin |
| Gomphosphenia Lange-Bert., 1995 |
| Gomphosphenia grovei (M. Schmidt) Lange-Bert., 1995 |
| Gomphosphenia grovei var. lingulata (Hust.) Lange-Bert., 1995 |