| 1 | Native | Northern America | Eastern Canada | Canada | Ontario | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Illinois | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Iowa | w. | McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the 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). 1977. Atlas of the Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Minnesota | w. | McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Missouri | w. | McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the 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). 1977. Atlas of the 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). 1977. Atlas of the 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). 1977. Atlas of the 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). 1977. Atlas of the Flora of the Great Plains. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Connecticut | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Massachusetts | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Michigan | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Ohio | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Pennsylvania | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | West Virginia | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Sonora | | Shreve, F. & I. L. Wiggins. 1964. Vegetation and flora of the Sonoran desert. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Colorado | | FNA Editorial Committee. 1993-. Flora of North America. |
| 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 | | Dorn, R. D. 1984. Vascular plants of Montana Note: = Polanisia trachysperma |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Washington | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Wyoming | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | New Mexico | | Martin, W. C. & C. R. Hutchins. 1980. A flora of New Mexico. |
| 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 | Southeastern U.S.A. | United States | Alabama | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Arkansas | w. | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Kentucky | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Louisiana | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Maryland | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Arizona | | FNA Editorial Committee. 1993-. Flora of North America. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | California | n. | 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 | | Welsh, S. L. et al. 1993. A Utah flora. |
| 1 | Native | Northern America | Western Canada | Canada | Alberta | s. | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Western Canada | Canada | Manitoba | s. | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Western Canada | Canada | Saskatchewan | s. | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 4 | Naturalized | | | | | natzd. elsewhere | |