| Hypnum acuminulatum Hornsch., 1840 |
| Hypnum admistum Sull., 1861 |
| Hypnum aduncum Hedw., 1801 |
| Hypnum affine Hook., 1822 |
| Hypnum agnatum Hampe, 1866 |
| Hypnum albicans Hedw., 1801 |
| Hypnum amabile (Mitt.) Hampe, 1869 |
| Hypnum andrieuxii Müll. Hal., 1851 |
| Hypnum angustifolium Hampe & Müll. Hal., 1855 |
| Hypnum anomalum Hampe, 1862 |
| Hypnum argentinicum Müll. Hal., 1882 |
| Hypnum aureolum Hampe, 1878 |
| Hypnum aurifolium (Mitt.) A. Jaeger, 1880 |
| Hypnum austrouncinatum Müll. Hal., 1883 |
| Hypnum brachypus Hampe, 1879 |
| Hypnum brasiliense Hampe, 1878 |
| Hypnum caturum P. Beauv., 1805 |
| Hypnum chrysophyllum Brid., 1801 |
| Hypnum ciliare Brid., 1812 |
| Hypnum cirrhiferum Spreng., 1827 |