| Griffithsia radicans Kütz., 1862 |
| Griffithsia schousboei Mont., 1839 |
| Griffithsia tenuis C. Agardh, 1828 |
| Gymnothamnion J. Agardh, 1892 |
| Gymnothamnion elegans (Schousb. ex C. Agardh) J. Agardh, 1892 |
| Haloplegma Mont., 1842 |
| Haloplegma duperreyi Mont., 1842 |
| Haloplegma mexicanum W.R. Taylor, 1945 |
| Lejolisia Bornet, 1859 |
| Lejolisia colombiana W.R. Taylor, 1945 |
| Lejolisia hoshawii E.Y. Dawson, 1966 |
| Mesothamnion Børgesen, 1917 |
| Mesothamnion caribaeum Børgesen, 1917 |
| Neoptilota Kylin, 1956 |
| Neoptilota californica (Rupr. ex Harv.) Kylin, 1956 |
| Neoptilota densa (C. Agardh) Kylin, 1956 |
| Neoptilota hypnoides (Harv.) Kylin, 1956 |
| Pleonosporium Nägeli, 1862 |
| Pleonosporium abysicola N.L. Gardner, 1927 |
| Pleonosporium boergesenii (A.B. Joly) R.E. Norris, 1985 |