| 1 | Native | Northern America | Northern Mexico | Mexico | Sonora | | 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 | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Oregon | | Hickman, J. C., ed. 1993. The Jepson manual: higher plants of California |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Washington | | Hickman, J. C., ed. 1993. The Jepson manual: higher plants of California |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Wyoming | | Cronquist, A. et al. 1972-. Intermountain flora. |
| 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 | 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 | | Welsh, S. L. et al. 1993. A Utah flora. |
| 1 | Native | Northern America | Subarctic America | Canada | Yukon | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Subarctic America | United States | Alaska | | Garibaldi, A. 1999. Medicinal flora of the Alaska natives: a compilation of knowledge from literary sources of Aleut, Alutiiq, Athabascan, Eyak, Haida, Inupiat, Tlingit, Tsimshian traditional healing methods using plants. Note: Alaska Natural Heritage Program, Anchorage, AK |
| 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 | Saskatchewan | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 2 | Cultivated | | | | | also cult. | Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening |