| Ectropothecium leptochaeton (Schwägr.) W.R. Buck, 1983 |
| Elharveya H.A. Crum, 1986 |
| Elharveya visicularioides (H.A. Crum) H.A. Crum, 1986 |
| Herzogiella Broth., 1925 |
| Herzogiella cylindricarpa (Cardot) Z. Iwats., 1970 |
| Homomallium (Schimp.) Loeske, 1907 |
| Homomallium mexicanum Cardot, 1910 |
| Homomallium sharpii Ando & Higuchi, 1983 |
| Horridohypnum W.R. Buck, 1981 |
| Horridohypnum mexicanum (Thér.) W.R. Buck, 1981 |
| Hypnaceae Schimp., 1856 |
| Hypnum Hedw., 1801 |
| Hypnum aduncum Hedw., 1801 |
| Hypnum albicans Hedw., 1801 |
| Hypnum amabile (Mitt.) Hampe, 1869 |
| Hypnum collinum Schleich. ex Müll. Hal., 1851 |
| Hypnum comtifolium Müll. Hal., 1874 |
| Hypnum cupressiforme Hedw., 1801 |
| Hypnum cupressiforme var. cupressiforme Hedw., 1801 |
| Hypnum cupressiforme var. lacunosum Brid., 1801 |