| Jaffueliobryum Thér., 1928 |
| Jaffueliobryum arsenei (Thér.) Thér., 1928 |
| Jaffueliobryum wrightii (Sull.) Thér., 1928 |
| Ptychomitriaceae Schimp., 1860 |
| Ptychomitrium Fürnr., 1829 |
| Ptychomitrium chimborazense (Spruce ex Mitt.) A. Jaeger & Sauerb., 1874 |
| Ptychomitrium cylindrothecium (Müll. Hal.) Paris, 1898 |
| Ptychomitrium lepidomitrium (Müll. Hal.) Schimp., 1872 |
| Ptychomitrium serratum Bruch & Schimp., 1837 |
| Ptychomitrium sinense (Mitt.) A. Jaeger, 1874 |