| 1 | Native | Northern America | North-Central U.S.A. | United States | Iowa | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Kansas | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Minnesota | s.w. | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Nebraska | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | North Dakota | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Oklahoma | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | South Dakota | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Baja California (Norte) | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Sonora | n. | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Colorado | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Idaho | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Montana | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Oregon | | Hitchcock, C. L. et al. 1955-1969. Vascular plants of the Pacific Northwest. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Washington | | Hitchcock, C. L. et al. 1955-1969. Vascular plants of the Pacific Northwest. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Wyoming | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | New Mexico | | McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | Texas | | Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Arizona | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | California | | Hickman, J. C., ed. 1993. The Jepson manual: higher plants of California |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Nevada | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Utah | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Western Canada | Canada | Alberta | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Western Canada | Canada | British Columbia | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Western Canada | Canada | Manitoba | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Western Canada | Canada | Saskatchewan | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |