| Hordeum berteroanum var. pumila É. Desv., 1854 |
| Hordeum boreale Scribn. & J.G. Sm., 1897 |
| Hordeum brachyantherum Nevski, 1936 |
| Hordeum caespitosum Scribn. ex Pammel, 1899 |
| Hordeum canadense (L.) Asch. & Graebn., 1902 |
| Hordeum depressum (Scribn. & J.G. Sm.) Rydb., 1909 |
| Hordeum distichon L., 1753 |
| Hordeum distichum L., 1753 |
| Hordeum elymoides (Raf.) Schenck, 1907 |
| Hordeum geniculatum (Delile) Thell., 1912 |
| Hordeum glaucum Steud., 1855 |
| Hordeum gussoneanum Parl., 1845 |
| Hordeum hexastichum L., 1753 |
| Hordeum hystrix Roth, 1797 |
| Hordeum intercedens Nevski, 1941 |
| Hordeum jubatum L., 1753 |
| Hordeum jubatum subsp. breviaristatum Bowden, 1962 |
| Hordeum jubatum subsp. intermedium Bowden, 1962 |
| Hordeum jubatum subsp. x intermedium Bowden, 1962 |
| Hordeum jubatum var. caespitosum (Scribn.) Hitchc., 1928 |