| 0 | 1000025 | PI 619268 | P-78-1 | Pycnanthemum beadlei (Small) Fernald | North Carolina, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum beadlei (Small) F | PI 619268 ** |
| 1 | 1000073 | PI 619269 | P-80 | Pycnanthemum californicum Torr. ex Durand | California, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum californicum Torr | PI 619269 ** |
| 2 | 1000253 | PI 619270 | P-91a | Pycnanthemum muticum (Michx.) Pers. | Tennessee, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum muticum (Michaux) | PI 619270 ** |
| 3 | 1000333 | PI 619271 | P-99-1 | Pycnanthemum torreyi Benth. | Tennessee, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum torrei Benth. | PI 619271 ** |
| 4 | 1000654 | PI 619275 | P-115-1 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Oregon, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum pycnanthemoides ( | PI 619275 ** |
| 5 | 1000883 | PI 619278 | 1598 | Pycnanthemum setosum Nutt. | New Jersey, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum setosum Nutt. | PI 619278 ** |
| 6 | 1001004 | PI 619280 | 1662-3 | Pycnanthemum loomisii Nutt. | Tennessee, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum loomisii Nutt. | PI 619280 ** |
| 7 | 1001067 | PI 619281 | 1676 | Pycnanthemum floridanum E. Grant & Epling | Florida, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum floridanum E. Gra | PI 619281 ** |
| 8 | 1001100 | PI 619282 | P-117-3 | Pycnanthemum muticum (Michx.) Pers. | Florida, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum muticum (Michaux) | PI 619282 ** |
| 9 | 1001161 | PI 619284 | P 79 | Pycnanthemum tenuifolium Schrad. | Connecticut, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum tenuifolium Schra | PI 619284 ** |
| 10 | 1001278 | PI 619287 | 1586 | Pycnanthemum tenuifolium Schrad. | Connecticut, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum tenuifolium Schra | PI 619287 ** |
| 11 | 1001305 | PI 619288 | 1600 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Connecticut, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum virginianum (L.) | PI 619288 ** |
| 12 | 1001473 | PI 619292 | Hybrid 86-10 | Pycnanthemum hybr. | Oregon, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum hybrid | PI 619292 ** |
| 13 | 1001495 | PI 619293 | Hybrid 91-1 | Pycnanthemum hybr. | Oregon, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum hybrid | PI 619293 ** |
| 14 | 1001570 | PI 619294 | P. verticillatum Ohio | Pycnanthemum verticillatum (Michx.) Pers. | Ohio, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum verticillatum (Mi | PI 619294 ** |
| 15 | 1001593 | PI 619295 | P. flexulosum Georgia | Pycnanthemum flexuosum (Walter) Britton et al. | Georgia, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum flexuosum (Walter | PI 619295 ** |
| 16 | 1001622 | PI 619296 | P. loomisii Tennessee | Pycnanthemum loomisii Nutt. | Tennessee, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum loomisii Nutt. | PI 619296 ** |
| 17 | 1001644 | PI 619297 | P. curvipes Tennessee | Pycnanthemum curvipes (Greene) E. Grant & Epling | Tennessee, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum curvipes (E. Gree | PI 619297 ** |
| 18 | 1001693 | PI 619299 | P. montanum North Carolina | Pycnanthemum montanum Michx. | North Carolina, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum montanum Michaux | PI 619299 ** |
| 19 | 1001722 | PI 619300 | P. muticum North Carolina | Pycnanthemum muticum (Michx.) Pers. | North Carolina, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum muticum (Michaux) | PI 619300 ** |
| 20 | 1001742 | PI 619301 | P. pycnanthemoides N. Car. | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | North Carolina, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum pycnanthemoides ( | PI 619301 ** |
| 21 | 1001768 | PI 619302 | P. californicum Oregon | Pycnanthemum californicum Torr. ex Durand | Oregon, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum californicum Torr | PI 619302 ** |
| 22 | 1001887 | PI 619305 | P. incanum Ontario | Pycnanthemum incanum Michx. | Ontario, Canada | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum incanum Michaux | PI 619305 ** |
| 23 | 1001908 | PI 619306 | P. curvipes Georgia | Pycnanthemum curvipes (Greene) E. Grant & Epling | Georgia, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum curvipes (E. Gree | PI 619306 ** |
| 24 | 1002423 | PI 619327 | Sample No. 1 | Pycnanthemum tenuifolium Schrad. | Missouri, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum tenuifolium Schra | PI 619327 ** |
| 25 | 1002565 | PI 619333 | P. virginianum Ames 4991 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Illinois, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum virginianum (L.) | PI 619333 ** |
| 26 | 1002580 | PI 619334 | No. 339 | Pycnanthemum pilosum Nutt. | Michigan, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum pilosum Nutt. | PI 619334 ** |
| 27 | 1002692 | PI 619340 | P. incanum Ontario | Pycnanthemum incanum Michx. | Ontario, Canada | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum incanum Michaux | PI 619340 ** |
| 28 | 1051956 | PI 619346 | P. californicum Ames 10214 | Pycnanthemum californicum Torr. ex Durand | Lubelskie, Poland | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum californicum | PI 619346 ** |
| 29 | 1482789 | PI 619341 | P. pycnanthemoides | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Virginia, United States | Not Available | | YES, THE ACCESSION IS PART OF THE CORE COLLECTION | 0 | Pycnanthemum pycnanthemoides ( | PI 619341 ** |