| Grimmia californica Sull., 1856 |
| Grimmia catalinensis E.B. Bartram, 1924 |
| Grimmia coloradensis Austin, 1877 |
| Grimmia consobrina Kunze ex Müll. Hal., 1849 |
| Grimmia contermina Müll. Hal., 1851 |
| Grimmia crassiretis Cardot & Broth., 1923 |
| Grimmia donniana Sm., 1804 |
| Grimmia elongata Kaulf., 1816 |
| Grimmia fasciculata Brid., 1819 |
| Grimmia fuliginosa Schimp. ex C. Müll., 1849 |
| Grimmia fuscolutea Hook., 1818 |
| Grimmia holzingeri Cardot & Thér., 1900 |
| Grimmia incurva Schwägr., 1811 |
| Grimmia involucrata Cardot, 1909 |
| Grimmia laevigata (Brid.) Brid., 1826 |
| Grimmia laxa Müll. Hal., 1847 |
| Grimmia leucophaea Grev., 1822 |
| Grimmia lisae De Not., 1837 |
| Grimmia longirostris Hook., 1818 |
| Grimmia mexicana Greven, 1999 |