| Canada | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. Morrone | 2003 and onwards | On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48 | Internet Cat. New World Grasses | http://www.tropicos.org/Project/CNWG: |
| Canada | | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| Canada | | | Soreng, R. J. | 2003 | Hordeum. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 389–402 |
| Canada | British Columbia | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| Canada | Labrador | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| Canada | Newfoundland | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| Mexico | | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| Mexico | Baja California | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. Morrone | 2003 and onwards | On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48 | Internet Cat. New World Grasses | http://www.tropicos.org/Project/CNWG: |
| United States | | | Soreng, R. J. | 2003 | Hordeum. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 389–402 |
| United States | | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Alaska | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Arizona | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | California | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Colorado | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Illinois | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Indiana | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Missouri | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Nevada | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | New Mexico | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Oregon | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Texas | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Utah | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Washington | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |
| United States | Wyoming | | Bothmer, R. v., N. Jacobsen & O. Seberg | 1992 | Variation and taxonomy in Hordeum depressum and in the H. brachyatherum complex (Poaceae) | Nordic J. Bot. | 13: 3–17 |