| Isopterygiopsis Z. Iwats., 1970 |
| Isopterygiopsis muelleriana (Schimp.) Z. Iwats., 1970 |
| Plagiotheciaceae M. Fleisch., 1912 |
| Plagiothecium Bruch & Schimp., 1851 |
| Plagiothecium conostegium Herzog, 1916 |
| Plagiothecium denticulatum (Hedw.) Bruch & Schimp., 1851 |
| Plagiothecium depressum (Brid.) Spruce, 1880 |
| Plagiothecium drepanophyllum Renauld & Cardot, 1905 |
| Plagiothecium novogranatense (Hampe) Mitt., 1869 |
| Plagiothecium planissimum (Mitt.) E.B. Bartram, 1946 |
| Plagiothecium scalpellifolium (Müll. Hal.) E.B. Bartram, 1946 |
| Plagiothecium schraderi (Müll. Hal.) Kindb., 1891 |
| Platydictya Berk., 1863 |
| Pseudotaxiphyllum Z. Iwats., 1987 |
| Pseudotaxiphyllum distichaceum (Mitt.) Z. Iwats., 1987 |