| 1 | Native | Northern America | Eastern Canada | Canada | Ontario | s. | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. Note: lists as Pycnanthemum virginianum (L.) Durand & Jackson |
| 1 | Native | Northern America | Eastern Canada | Canada | Québec | s.w. | Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol. Note: lists as Pycnanthemum virginianum (L.) Durand & Jackson |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Illinois | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Iowa | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Kansas | e. | 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 | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Nebraska | e. & c. | 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 | c. | 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 | e. | 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 | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Connecticut | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Indiana | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Maine | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Massachusetts | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Michigan | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Hampshire | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Jersey | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New York | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Ohio | | Ohio Flora Committee (E. L. Braun, T. S. Cooperrider, T. R. Fisher, J. J. Furlow). 1967-. The vascular flora of Ohio. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Pennsylvania | | Wherry, E. T. et al. 1979. Atlas of the flora of Pennsylvania. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Rhode Island | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Vermont | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Arkansas | | Smith, E. B. 1978. An atlas and annotated list of the vascular plants of Arkansas |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Delaware | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | n. | Duncan, W. H. & J. T. Kartesz. 1981. Vascular flora of Georgia: an annotated checklist. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Kentucky | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Maryland | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |
| 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 | Tennessee | | Wofford, B. E. Database of Tennessee vascular plants (on-line resource). |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | | Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada. |