| 1 | Native | Northern America | Eastern Canada | Canada | New Brunswick | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Eastern Canada | Canada | Nova Scotia | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Eastern Canada | Canada | Ontario | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | Eastern Canada | Canada | Québec | | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Illinois | | Mohlenbrock, R. H. & D. M. Ladd. 1978. Distribution of Illinois vascular plants |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Iowa | | 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 | | 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 | | 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 | North-Central U.S.A. | United States | Wisconsin | | Wetter, M. A. et al. WISFLORA: Wisconsin vascular plant species (on-line resource). |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Connecticut | | Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Indiana | | Deam, C. C. 1940. Flora of Indiana. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Maine | | Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Massachusetts | | Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Michigan | | Voss, E. 1972-. Michigan flora. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Hampshire | | Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Jersey | | Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2 |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New York | | Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Ohio | | Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2 |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Pennsylvania | | Rhoads, A. F. & T. A. Block. 2000. The plants of Pennsylvannia. An illustrated manual |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Rhode Island | | Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Vermont | | Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | West Virginia | | Harmon, P. J. et al. 2006. Checklist and atlas of the vascular flora of West Virginia. |
| 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 | | Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Arkansas | | McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Delaware | | Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2 |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | District of Columbia | | Flora of the Washington-Baltimore area (DC Flora Checklist) (on-line resource). |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | | Weakley, A. S. 2007. Flora of the Carolinas, Virginia, and Georgia, and surrounding areas. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Kentucky | | Jones, R. L. 2005. Plant life of Kentucky: an illustrated guide to the vascular flora. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Maryland | | Brown, R. G. & M. L. Brown. 1984. Herbaceous plants of Maryland |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | North Carolina | | Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | South Carolina | | Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Tennessee | | Chester, E. W. et al. 1993-1997. Atlas of Tennessee vascular plants. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | | Weakley, A. S. 2007. Flora of the Carolinas, Virginia, and Georgia, and surrounding areas. |