| Leucomiaceae Broth., 1908 |
| Leucomium Mitt., 1868 |
| Leucomium lignicola Spruce, 1869 |
| Leucomium mexicanum Besch., 1905 |
| Leucomium mosenii Broth., 1895 |
| Leucomium strumosum (Hornsch.) Mitt., 1869 |
| Rhynchostegiopsis Müll. Hal., 1897 |
| Rhynchostegiopsis cupressina (Besch.) Cardot, 1925 |
| Rhynchostegiopsis flexuosa (Sull.) Müll. Hal., 1897 |
| Rhynchostegiopsis planifolia H.A. Crum & E.B. Bartram, 1958 |
| Rhynchostegiopsis serrata (Besch.) Broth., 1907 |