| Stegonia Vent., 1883 |
| Stegonia latifolia (Schwägr.) Vent., 1923 |
| Stegonia latifolia var. pilifera (Brid.) Broth., 1923 |
| Streptocalypta Müll. Hal., 1879 |
| Streptocalypta santosii (E.B. Bartram) R.H. Zander, 1983 |
| Streptocalypta tortelloides (Cardot) R.H. Zander, 1983 |
| Streptopogon Wilson, 1851 |
| Streptopogon calymperes Müll. Hal. ex Geh., 1881 |
| Streptopogon cavifolius Mitt., 1869 |
| Streptopogon erythrodontus (Taylor) Wilson, 1851 |
| Streptopogon matudianus H.A. Crum, 1952 |
| Streptopogon rigidus Mitt. ex Broth., 1902 |
| Streptopogon rzedowskii M.A. Cárdenas, 1986 |
| Syntrichia Brid., 1801 |
| Syntrichia amphidiacea (Müll. Hal.) R.H. Zander, 1993 |
| Syntrichia anderssonii (Ångstr.) R.H. Zander, 1993 |
| Syntrichia andicola (Mont.) Ochyra, 1992 |
| Syntrichia bartramii (Steere) R.H. Zander, 1993 |
| Syntrichia bogotensis (Hampe) R.H. Zander, 1993 |
| Syntrichia caninervis Mitt., 1859 |