| Canada | | | Soreng, R. J. & C. W. Greene | 2003 | Calamagrostis. | Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae, Contr. U.S. Natl. Herb. | 48: 191–227 |
| Canada | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. 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 | British Columbia | | Wilson, B. L., N. Otting & R. E. Brainerd | 2019 | Calamagrostis utsutsuensis (Poaceae), a new species endemic to Steens Mountain, Oregon, U.S.A. | J. Bot. Res. Inst. Texas | 13(1): 7–17 |
| Canada | Saskatchewan | | Wilson, B. L., N. Otting & R. E. Brainerd | 2019 | Calamagrostis utsutsuensis (Poaceae), a new species endemic to Steens Mountain, Oregon, U.S.A. | J. Bot. Res. Inst. Texas | 13(1): 7–17 |
| China | | | Anonymous | 1986 | (none) | List-Based Rec., Soil Conserv. Serv., U.S.D.A. | |
| United States | | | Anonymous | 1986 | (none) | List-Based Rec., Soil Conserv. Serv., U.S.D.A. | |
| United States | | | Munz, P. A. & D. D. Keck | 1959 | (none) | Cal. Fl. | 1–1681 |
| United States | | | Munz, P. A. | 1974 | (none) | Fl. S. Calif. | 1–1086 |
| United States | | | Cronquist, A. J., A. H. Holmgren, N. H. Holmgren & Reveal | 1977 | Vascular Plants of the Intermountain West, U.S.A. | Intermount. Fl. | 6: 1–584 |
| United States | | | Soreng, R. J. & C. W. Greene | 2003 | Calamagrostis. | Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae, Contr. U.S. Natl. Herb. | 48: 191–227 |
| United States | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. 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 | California | | Anonymous | 1986 | (none) | List-Based Rec., Soil Conserv. Serv., U.S.D.A. | |
| United States | California | | Munz, P. A. & D. D. Keck | 1959 | (none) | Cal. Fl. | 1–1681 |
| United States | California | | Munz, P. A. | 1974 | (none) | Fl. S. Calif. | 1–1086 |
| United States | California | | Wilson, B. L., N. Otting & R. E. Brainerd | 2019 | Calamagrostis utsutsuensis (Poaceae), a new species endemic to Steens Mountain, Oregon, U.S.A. | J. Bot. Res. Inst. Texas | 13(1): 7–17 |
| United States | Colorado | | Wilson, B. L., N. Otting & R. E. Brainerd | 2019 | Calamagrostis utsutsuensis (Poaceae), a new species endemic to Steens Mountain, Oregon, U.S.A. | J. Bot. Res. Inst. Texas | 13(1): 7–17 |