| 0 | PI 704867 sos | NEWFS-753 | Pycnanthemum muticum (Michx.) Pers. | Rhode Island, United States | COR | | Not Available | 2021 | | | | | | | Wild material | PI assigned before phyical inventory of W6 shipment and is missing. Maintain COR as site in case seeds are recovered. Aromatic musky minty scent green inflorescences look like monochromatic sunflowers with brown seeds poking out of comb holes. | 2138839 | PI 704867 sos |
| 1 | PI 704865 sos | CBG-10594 | Pycnanthemum pilosum Nutt. | Illinois, United States | COR | | Not Available | 2021 | | | | | | | Wild material | Plant numbers sampled estimated. | 2120180 | PI 704865 sos |
| 2 | PI 704866 sos | CBG-10595 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Illinois, United States | COR | | Not Available | 2021 | | | | | | | Wild material | | 2120181 | PI 704866 sos |
| 3 | PI 704851 sos | MARSB-196 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Delaware, United States | COR |  | Not Available | 2019 | | | | | | | Wild material | | 2097515 | PI 704851 sos |
| 4 | PI 704857 sos | MARSB-872 | Pycnanthemum tenuifolium Schrad. | New Jersey, United States | COR |  | Not Available | 2019 | | | | | | | Wild material | | 2097743 | PI 704857 sos |
| 5 | PI 704818 sos | NCBG-567 | Pycnanthemum tenuifolium Schrad. | Maryland, United States | COR |  | Not Available | 2018 | | | | | | | Wild material | Pycnanthemum tenuifolium | 1965978 | PI 704818 sos |
| 6 | PI 704819 sos | NCBG-729 | Pycnanthemum flexuosum (Walter) Britton et al. | North Carolina, United States | COR |  | Not Available | 2018 | | | | | | | Wild material | Pycnanthemum flexuosum | 1966034 | PI 704819 sos |
| 7 | PI 704847 sos | NCBG-605 | Pycnanthemum tenuifolium Schrad. | North Carolina, United States | COR |  | Not Available | 2018 | | | | | | | Wild material | Pycnanthemum tenuifolium | 1965989 | PI 704847 sos |
| 8 | PI 645593 | Darby Plains 13 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Ohio, United States | COR | | Not Available | 2004 | COLLECTED | 11/01/2004 | Battelle-Darby Creek Metro Park, Franklin County. From I-270, take the West Broad Street (U.S. 40) exit west. Go about 5 miles on Broad Street and turn left on Darby Creek Drive. Main entrance is about 3 miles on the right. | 39.90000000, -83.21222222 | 270 | | Wild material | Original (parent) seed source along railroad tracks west from London, Madison County, Ohio. (Sites:) 1. Tracks South of 42 (39.8673 N, 83.4933 W) from London to South Charleston, Clark County, Ohio, and 2. Tracks North of 42 (39.8878 N, 83.4998 W) From London to Plattsburg, Clark County, Ohio. | 1680158 | PI 645593 |
| 9 | PI 645589 | LC 6 | Pycnanthemum tenuifolium Schrad. | Ohio, United States | COR | | Not Available | 2004 | COLLECTED | 10/19/2004 | Louis Campbell State Nature Preserve, Lucas County. | 41.59083333, -83.76166667 | 0 | | | | 1690645 | PI 645589 |
| 10 | PI 645586 | ALP 5 | Pycnanthemum tenuifolium Schrad. | Ohio, United States | COR | | Not Available | 2004 | COLLECTED | 10/07/2004 | Adams Lake Prairie State Nature Preserve, within Adams Lake State Park, Adams County. | 38.81083333, -83.53000000 | 0 | Associated species: Prairie plants including Allium cernuum, Eryngium yuccifolium, 4 Liatris species, Ratibida pinnata, Rudbeckia fulgida, Silphium trifoliatum. | | | 1690577 | PI 645586 |
| 11 | PI 645587 | CP 8 | Pycnanthemum tenuifolium Schrad. | Ohio, United States | COR | | Not Available | 2004 | COLLECTED | 10/07/2004 | Chaparral Prairie State Nature Preserve, Adams County, three miles northwest of West Union. | 38.83555556, -83.57361111 | 0 | Associated species: Baptisia australis, Coreopsis tripteris, Eryngium yuccafolium, Liatris spicata, Physostegia virginiana, Ratibida pinnata, Rudbeckia hirta. | | | 1690605 | PI 645587 |
| 12 | PI 645591 | Stucker Meadow 11 | Pycnanthemum incanum Michx. | Ohio, United States | COR | | Not Available | 2004 | COLLECTED | 08/22/2004 | | | | | | | 1690737 | PI 645591 |
| 13 | PI 651317 | P. virginianum Pyvi Zone 1 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Iowa, United States | COR | | Not Available | 2002 | DONATED | 12/17/2002 | | | | | Cultivated material | Enclosed, please find 5 envelopes of Pycnanthemm species from the Iowa Ecotype Project collection. As indicated, this seed is the first generation progeny of multiple accessions collected from remnant populations in Iowa. Aproximately 100 plants are grown from each original collection, and planted into seed nursery plots. Accessions from within the same project zone are grown in the same plot, in descrete rows, but isolated by approximately one-fourth mile from accessions originating from other project zones. | 1643944 | PI 651317 |
| 14 | PI 651318 | P. virginianum Pyvi Zone 2 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Iowa, United States | COR | | Not Available | 2002 | DONATED | 12/17/2002 | | | | | Cultivated material | | 1643945 | PI 651318 |
| 15 | PI 651319 | P. virginianum Pyvi Zone 3 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Iowa, United States | COR | | Not Available | 2002 | DONATED | 12/17/2002 | | | | | Cultivated material | | 1643946 | PI 651319 |
| 16 | PI 651320 | P. pilosum Pypi Zone 3 | Pycnanthemum pilosum Nutt. | Iowa, United States | COR | | Not Available | 2002 | DONATED | 12/17/2002 | | | | | Cultivated material | | 1643947 | PI 651320 |
| 17 | PI 651321 | P. tenuifolium Pyte Zone 3 | Pycnanthemum tenuifolium Schrad. | Iowa, United States | COR | | Not Available | 2002 | DONATED | 12/17/2002 | | | | | Cultivated material | | 1643948 | PI 651321 |
| 18 | PI 619344 | P. tenuifolium | Pycnanthemum tenuifolium Schrad. | Connecticut, United States | COR | | Not Available | 1995 | COLLECTED | 10/09/1995 | | | | | Wild material | | 1508121 | PI 619344 |
| 19 | PI 619345 | P. incanum | Pycnanthemum incanum Michx. | Connecticut, United States | COR | | Not Available | 1995 | COLLECTED | 10/09/1995 | | | | | Wild material | | 1508122 | PI 619345 |
| 20 | PI 619342 | P. beadlei | Pycnanthemum beadlei (Small) Fernald | North Carolina, United States | COR | | Not Available | 1995 | COLLECTED | 05/18/1995 | | | | | Wild material | | 1508172 | PI 619342 |
| 21 | PI 619343 | P. loomisii | Pycnanthemum loomisii Nutt. | Tennessee, United States | COR | | Not Available | 1995 | COLLECTED | 05/18/1995 | | | | | Cultivated material | | 1508120 | PI 619343 |
| 22 | PI 619341 | P. pycnanthemoides | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Virginia, United States | COR | | Not Available | 1994 | COLLECTED | 1993 | Original seek collected in Russell County, Virginia. Off Hwy 65 near US 58, about 4 miles on Brick Church Rd; near cemetary. Calcareous roadside. | 37.28333333, -76.73333333 | 0 | Garden in Williansburg, Virginia | Cultivated material | Other/collector number: Rexford H. Talbert #5 | 1482789 | PI 619341 |
| 23 | PI 619340 | P. incanum Ontario | Pycnanthemum incanum Michx. | Ontario, Canada | COR | | Not Available | 1992 | COLLECTED | 09/18/1992 | Burlington, Ontario | | | | Cultivated material | Open pollinated, but probably not crossed due to distance from other Pycnanthemum spp. | 1002692 | PI 619340 |
| 24 | PI 619336 | P. curvipes Oregon | Pycnanthemum curvipes (Greene) E. Grant & Epling | Oregon, United States | COR | | Not Available | 1992 | DEVELOPED | | | | | | Breeding material | | 1002618 | PI 619336 |
| 25 | PI 619337 | P. floridanum | Pycnanthemum floridanum E. Grant & Epling | Oregon, United States | COR | | Not Available | 1992 | DEVELOPED | | | | | | Breeding material | | 1002642 | PI 619337 |
| 26 | PI 619338 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1992 | DEVELOPED | | | | | | Breeding material | | 1002655 | PI 619338 |
| 27 | PI 619339 | Hybrid 5-3 | Pycnanthemum hybr. | Oregon, United States | COR | | Not Available | 1992 | DEVELOPED | | | | | | Breeding material | Grown in Corvallis garden | 1002679 | PI 619339 |
| 28 | PI 619326 | Sample No. 77 | Pycnanthemum tenuifolium Schrad. | Ontario, Canada | COR | | Not Available | 1992 | COLLECTED | 1991 | Niagara Falls, Ontario, Canada | 43.10000000, -79.05000000 | | | Uncertain improvement status | For bee pasture test. From 1985 Seed Exchange of the Niagara Parks Commission School of Horticulture. | 1002404 | PI 619326 |
| 29 | PI 619327 | Sample No. 1 | Pycnanthemum tenuifolium Schrad. | Missouri, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | Growing on edge of prairie at Wallace State Park Clinton Co., Cameron East Quad, T56N R30W, SE1/4 of NW1/4 of Sec 24. Growing with Aster, Rhus glabra, and Solidago canadensis. | 39.66222222, -94.23638889 | 294 | | Wild material | For bee pasture testing | 1002423 | PI 619327 |
| 30 | PI 619328 | Sample No. 6 | Pycnanthemum tenuifolium Schrad. | Kansas, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | Growing in virgin prairie at The Prairie Center, Johnson Co. De Soto Quad, T13S R23E, NE1/4 of NE1/4 of Sec. 31. Growing with big bluestem, Sorghastrum and Solidago. | 38.86666667, -94.86666667 | 305 | | Wild material | For bee pasture testing | 1002446 | PI 619328 |
| 31 | PI 619329 | Sample No. 10 | Pycnanthemum tenuifolium Schrad. | Kansas, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | Growing in roadside ditch. Allen Co., Bronson Quad E edge of NE1/4 of NE1/4 of Sec 32, T24S R21E. Growing with Salvia azurea, Baptisia leuchantha, Morus alba, and Helianthus. | 37.88333333, -95.28333333 | 330 | | Wild material | For bee pasture testing | 1002464 | PI 619329 |
| 32 | PI 619330 | P. tennuifolium Ames 4577 | Pycnanthemum tenuifolium Schrad. | Minnesota, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | Growing in prairie. Minnesota Landscape Arboretum Chanhassen. | 44.85888889, -93.60111111 | | | Wild material | For bee pasture testing | 1002487 | PI 619330 |
| 33 | PI 619331 | P. virginianum Ames 4579 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Michigan, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | Growing on shore of Willow Pond. Matthaei Botanical Gardens Ann Arbor, Washtenaw Co. | 42.30083333, -83.66805556 | | | Wild material | For bee pasture testing | 1002505 | PI 619331 |
| 34 | PI 619332 | P. tenuifolium Ames 4717 | Pycnanthemum tenuifolium Schrad. | Iowa, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | | | | | Wild material | For bee pasture testing | 1002527 | PI 619332 |
| 35 | PI 619333 | P. virginianum Ames 4991 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Illinois, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | | | | | Wild material | For bee pasture testing. From type plant of forma citriodora, see Rhodora 83:145-146 1981 | 1002565 | PI 619333 |
| 36 | PI 619334 | No. 339 | Pycnanthemum pilosum Nutt. | Michigan, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | Beal Garden, Michigan State Univeristy, East Lansing | 42.73111111, -84.47833333 | | | Cultivated material | For bee pasture testing | 1002580 | PI 619334 |
| 37 | PI 619335 | R-W 37 | Pycnanthemum pilosum Nutt. | Illinois, United States | COR | | Not Available | 1992 | COLLECTED | 1991 | Growing in brushy vine patch along railroad right-of-way 2.3 miles NNE of center of Grayville, Grayville Quad, Edwards Co. T3S R14W NE1/4 of NE1/4 of Sec 9. Area dominated by Lonicera japonica, Campsis radicans & Rubus flagellaris. | 38.28333333, -87.98333333 | 125 | | Uncertain improvement status | | 1002603 | PI 619335 |
| 38 | PI 619306 | P. curvipes Georgia | Pycnanthemum curvipes (Greene) E. Grant & Epling | Georgia, United States | COR | | Not Available | 1992 | COLLECTED | 02/05/1992 | Cobb Co., Kennesaw Mtn. Nat'l Battlefield Park | 33.98361111, -84.57527778 | | | Wild material | | 1001908 | PI 619306 |
| 39 | PI 619348 | P. californicum Ames 20122 | Pycnanthemum californicum Torr. ex Durand | Lubelskie, Poland | COR | | Not Available | 1992 | DONATED | 01/12/1993 | | | | | | | 1084207 | PI 619348 |
| 40 | PI 619347 | P. pilosum Ames 14437 | Pycnanthemum pilosum Nutt. | Missouri, United States | COR | | Not Available | 1991 | COLLECTED | 10/14/1991 | Spiva Azalea Park, Madison County, Missouri T33N R8E N1/2 SE1/4 Sec.20 | 37.53333333, -90.18333333 | 820 | | Wild material | | 1067401 | PI 619347 |
| 41 | PI 619305 | P. incanum Ontario | Pycnanthemum incanum Michx. | Ontario, Canada | COR | | Not Available | 1990 | COLLECTED | 1990 | Burlington Bay Bluffs, in woods of Quercus, Sumac, Pinus | 43.30000000, -79.75000000 | | | Wild material | Endangered in Canada. From the only extant population | 1001887 | PI 619305 |
| 42 | PI 619303 | Hybrid 64-3 | Pycnanthemum hybr. | Oregon, United States | COR | | Not Available | 1990 | DEVELOPED | | | | | | Breeding material | | 1001791 | PI 619303 |
| 43 | PI 619304 | Hybrid 64-5 | Pycnanthemum hybr. | Oregon, United States | COR | | Not Available | 1990 | DEVELOPED | | | | | | Breeding material | | 1001819 | PI 619304 |
| 44 | PI 619302 | P. californicum Oregon | Pycnanthemum californicum Torr. ex Durand | Oregon, United States | COR | | Not Available | 1990 | COLLECTED | 05/14/1990 | Jackson County. n.w. of Soda Mountain | 42.07539000, -122.49299000 | 1585 | Moist streamside | Breeding material | Confirmation on locality needed from Dr. Henrietta Chambers `0/8/2021 | 1001768 | PI 619302 |
| 45 | PI 619294 | P. verticillatum Ohio | Pycnanthemum verticillatum (Michx.) Pers. | Ohio, United States | COR | | Not Available | 1990 | COLLECTED | 09/05/1986 | Athens Co., OH along roadside of Co.Rd. 79 | 39.25000000, -82.16666667 | | | Wild material | | 1001570 | PI 619294 |
| 46 | PI 619295 | P. flexulosum Georgia | Pycnanthemum flexuosum (Walter) Britton et al. | Georgia, United States | COR | | Not Available | 1990 | COLLECTED | 08/18/1988 | Coffee Co. in meadow adjacent to the Satilla River | 31.50000000, -82.83333333 | | | Wild material | | 1001593 | PI 619295 |
| 47 | PI 619296 | P. loomisii Tennessee | Pycnanthemum loomisii Nutt. | Tennessee, United States | COR | | Not Available | 1990 | COLLECTED | 12/28/1987 | Giles Co. on embankment along edge of wooded area | 35.08333333, -87.00000000 | | | Wild material | | 1001622 | PI 619296 |
| 48 | PI 619297 | P. curvipes Tennessee | Pycnanthemum curvipes (Greene) E. Grant & Epling | Tennessee, United States | COR | | Not Available | 1990 | COLLECTED | 09/03/1989 | Cheatham Co. near 'Narrows of the Harpeth Historic Site' | 36.16666667, -87.08333333 | | | Wild material | | 1001644 | PI 619297 |
| 49 | PI 619298 | P. curvipes Tennessee | Pycnanthemum curvipes (Greene) E. Grant & Epling | Tennessee, United States | COR | | Not Available | 1990 | COLLECTED | 08/29/1989 | Polk Co. along embankment at Lake Ocoee | 35.16666667, -84.50000000 | | | Wild material | | 1001673 | PI 619298 |
| 50 | PI 619299 | P. montanum North Carolina | Pycnanthemum montanum Michx. | North Carolina, United States | COR | | Not Available | 1990 | COLLECTED | 08/29/1989 | Avery Co. along Blue Ridge Pkwy at Chestoa View | 36.08333333, -81.91666667 | | | Wild material | | 1001693 | PI 619299 |
| 51 | PI 619300 | P. muticum North Carolina | Pycnanthemum muticum (Michx.) Pers. | North Carolina, United States | COR | | Not Available | 1990 | COLLECTED | 08/29/1989 | Alleghany Co. along Blue Ridge Pkwy at edge of a woods | 36.41666667, -81.16666667 | | | Wild material | | 1001722 | PI 619300 |
| 52 | PI 619301 | P. pycnanthemoides N. Car. | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | North Carolina, United States | COR | | Not Available | 1990 | COLLECTED | 08/29/1989 | Alleghany Co. along Blue Ridge Pkwy at edge of a woods | 36.41666667, -81.16666667 | | | Wild material | | 1001742 | PI 619301 |
| 53 | PI 619269 | P-80 | Pycnanthemum californicum Torr. ex Durand | California, United States | COR | | Not Available | 1989 | COLLECTED | | Shasta County, north of La Moine at Pollard Flat. | 40.99388889, -122.41833333 | 455 | | Breeding material | | 1000073 | PI 619269 |
| 54 | PI 619346 | P. californicum Ames 10214 | Pycnanthemum californicum Torr. ex Durand | Lubelskie, Poland | COR | | Not Available | 1989 | DONATED | 03/21/1989 | | | | | | | 1051956 | PI 619346 |
| 55 | PI 619281 | 1676 | Pycnanthemum floridanum E. Grant & Epling | Florida, United States | COR | | Not Available | 1989 | COLLECTED | 07/03/1978 | Gainseville | 29.65166667, -82.32222222 | | | Breeding material | | 1001067 | PI 619281 |
| 56 | PI 619292 | Hybrid 86-10 | Pycnanthemum hybr. | Oregon, United States | COR | | Not Available | 1989 | DEVELOPED | | | | | | Breeding material | | 1001473 | PI 619292 |
| 57 | PI 619293 | Hybrid 91-1 | Pycnanthemum hybr. | Oregon, United States | COR | | Not Available | 1989 | DEVELOPED | | | | | | Breeding material | | 1001495 | PI 619293 |
| 58 | PI 619284 | P 79 | Pycnanthemum tenuifolium Schrad. | Connecticut, United States | COR | | Not Available | 1988 | COLLECTED | 08/03/1963 | Roadside, Baldwin Parkway | | | | Breeding material | | 1001161 | PI 619284 |
| 59 | PI 619285 | 1560 | Pycnanthemum muticum (Michx.) Pers. | Connecticut, United States | COR | | Not Available | 1988 | COLLECTED | 07/29/1958 | Roadsides, Baldwin Parkway, Connecticut | | | | Breeding material | | 1001218 | PI 619285 |
| 60 | PI 619286 | 1607 | Pycnanthemum muticum (Michx.) Pers. | Connecticut, United States | COR | | Not Available | 1988 | COLLECTED | 10/08/1958 | Roadsides, Baldwin Parkway, Connecticut | | | | Breeding material | | 1001248 | PI 619286 |
| 61 | PI 619287 | 1586 | Pycnanthemum tenuifolium Schrad. | Connecticut, United States | COR | | Not Available | 1988 | COLLECTED | 08/22/1958 | Old Lime, CT in weedy field at highway junction | | | | Breeding material | | 1001278 | PI 619287 |
| 62 | PI 619288 | 1600 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Connecticut, United States | COR | | Not Available | 1988 | COLLECTED | 09/21/1958 | Woodbridge, CT in marshy field at highway junction | 41.35250000, -73.00777778 | | | Breeding material | | 1001305 | PI 619288 |
| 63 | PI 619289 | 1663 | Pycnanthemum tenuifolium Schrad. | Tennessee, United States | COR | | Not Available | 1988 | COLLECTED | 08/18/1968 | Camden, TN, in upland woods along I40 | 36.06194444, -88.09166667 | | | Breeding material | | 1001333 | PI 619289 |
| 64 | PI 619290 | 2423A | Pycnanthemum hybr. | Illinois, United States | COR | | Not Available | 1988 | COLLECTED | 08/19/1965 | Along fence lines in Sangamon River valley, Illinois. Lat/lon accurate to Sangamon, IL near Sangamon River. | 39.86666667, -88.85388889 | | | Breeding material | | 1001362 | PI 619290 |
| 65 | PI 619291 | P. beadlei 1657 | Pycnanthemum beadlei (Small) Fernald | South Carolina, United States | COR | | Not Available | 1988 | COLLECTED | 06/21/1968 | Ceasar's Head, roadside and trail borders near rock outcrop | | | | Breeding material | | 1001390 | PI 619291 |
| 66 | PI 619320 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002212 | PI 619320 |
| 67 | PI 619321 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002236 | PI 619321 |
| 68 | PI 619322 | P. tenuifolium | Pycnanthemum tenuifolium Schrad. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002252 | PI 619322 |
| 69 | PI 619323 | P. virginianum | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002280 | PI 619323 |
| 70 | PI 619324 | P. tenuifolium | Pycnanthemum tenuifolium Schrad. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002298 | PI 619324 |
| 71 | PI 619325 | P. beadlei | Pycnanthemum beadlei (Small) Fernald | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002324 | PI 619325 |
| 72 | PI 619268 | P-78-1 | Pycnanthemum beadlei (Small) Fernald | North Carolina, United States | COR | | Not Available | 1988 | COLLECTED | 08/23/1963 | Macon County, between town of Highlands and Biological Station. | 35.05250000, -83.19166667 | 1165 | Roadsides. | Breeding material | | 1000025 | PI 619268 |
| 73 | PI 619270 | P-91a | Pycnanthemum muticum (Michx.) Pers. | Tennessee, United States | COR | | Not Available | 1988 | COLLECTED | 04/09/1967 | Ozone, Cumberland County, Tennessee | 36.50861111, -85.28305556 | | | Breeding material | | 1000253 | PI 619270 |
| 74 | PI 619271 | P-99-1 | Pycnanthemum torreyi Benth. | Tennessee, United States | COR | | Not Available | 1988 | COLLECTED | 08/20/1969 | Cookeville, low roadside | 36.16305556, -85.50194444 | | | Breeding material | | 1000333 | PI 619271 |
| 75 | PI 619273 | P-113-1 | Pycnanthemum muticum (Michx.) Pers. | North Carolina, United States | COR | | Not Available | 1988 | COLLECTED | 10/17/1976 | Roadside ditch, Blue Ridge Parkway | | | | Breeding material | | 1000516 | PI 619273 |
| 76 | PI 619274 | P-113-2 | Pycnanthemum muticum (Michx.) Pers. | North Carolina, United States | COR | | Not Available | 1988 | COLLECTED | 10/17/1976 | Roadside ditch, Blue Ridge Parkway | | | | Breeding material | | 1000546 | PI 619274 |
| 77 | PI 619275 | P-115-1 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | | 1000654 | PI 619275 |
| 78 | PI 619276 | P-116-4 | Pycnanthemum beadlei (Small) Fernald | North Carolina, United States | COR | | Not Available | 1988 | COLLECTED | 10/17/1976 | Ashe County, North Carolina | 36.43333333, -81.50000000 | | | Breeding material | | 1000824 | PI 619276 |
| 79 | PI 619277 | P-116-5 | Pycnanthemum beadlei (Small) Fernald | North Carolina, United States | COR | | Not Available | 1988 | COLLECTED | 10/17/1976 | Ashe County, North Carolina | 36.43333333, -81.50000000 | | | Breeding material | | 1000853 | PI 619277 |
| 80 | PI 619278 | 1598 | Pycnanthemum setosum Nutt. | New Jersey, United States | COR | | Not Available | 1988 | COLLECTED | 09/13/1958 | Manahawkin, in weedy field adjacent to Pine-Oak woods | 39.68333333, -74.25000000 | | | Breeding material | | 1000883 | PI 619278 |
| 81 | PI 619279 | P. beadlei 1657-2 | Pycnanthemum beadlei (Small) Fernald | South Carolina, United States | COR | | Not Available | 1988 | COLLECTED | 06/22/1968 | Ceasar's Head, off private road just south of rock outcrop | | | | Breeding material | | 1000941 | PI 619279 |
| 82 | PI 619280 | 1662-3 | Pycnanthemum loomisii Nutt. | Tennessee, United States | COR | | Not Available | 1988 | COLLECTED | | | | | | Breeding material | | 1001004 | PI 619280 |
| 83 | PI 619282 | P-117-3 | Pycnanthemum muticum (Michx.) Pers. | Florida, United States | COR | | Not Available | 1988 | COLLECTED | 03/12/1976 | Alachua County, Florida | 29.70000000, -82.33333333 | | | Breeding material | | 1001100 | PI 619282 |
| 84 | PI 619283 | P-117-4 | Pycnanthemum muticum (Michx.) Pers. | Florida, United States | COR | | Not Available | 1988 | COLLECTED | 03/12/1976 | Gainesville, Alachua County, Florida | 29.65166667, -82.32222222 | | | Breeding material | | 1001133 | PI 619283 |
| 85 | PI 619308 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1001956 | PI 619308 |
| 86 | PI 619310 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002001 | PI 619310 |
| 87 | PI 619311 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002027 | PI 619311 |
| 88 | PI 619313 | P. beadlei | Pycnanthemum beadlei (Small) Fernald | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002068 | PI 619313 |
| 89 | PI 619314 | P. beadlei | Pycnanthemum beadlei (Small) Fernald | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002090 | PI 619314 |
| 90 | PI 619315 | P. setosum | Pycnanthemum setosum Nutt. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002113 | PI 619315 |
| 91 | PI 619316 | P. beadlei | Pycnanthemum beadlei (Small) Fernald | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002131 | PI 619316 |
| 92 | PI 619318 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002171 | PI 619318 |
| 93 | PI 619319 | P. muticum | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | COR | | Not Available | 1988 | DEVELOPED | | | | | | Breeding material | (This accession was part of the PL,SD 'breakout' - 1992) | 1002195 | PI 619319 |
| 94 | PI 619352 | P. virginianum Ames 7989 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Iowa, United States | COR | | Not Available | 1987 | COLLECTED | | | | | | | | 1041932 | PI 619352 |
| 95 | PI 619351 | P. virginianum Ames 7894 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Missouri, United States | COR | | Not Available | 1987 | COLLECTED | | | | | | | | 1041635 | PI 619351 |
| 96 | PI 619350 | P. tenuifolium Ames 4578 | Pycnanthemum tenuifolium Schrad. | Missouri, United States | COR | | Not Available | 1985 | COLLECTED | | | | | | | | 1028701 | PI 619350 |
| 97 | PI 619349 | P. virginianum Ames 4554 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | North Dakota, United States | COR | | Not Available | 1985 | COLLECTED | | | | | | | | 1028604 | PI 619349 |
| 98 | W6 62109 | CBG-10944 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | | W6 |  | | 2024 | | | | | | | | | 2168907 | W6 62109 |
| 99 | W6 62111 | CBG-10946 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | | W6 |  | | 2024 | | | | | | | | | 2168909 | W6 62111 |
| 100 | W6 62204 | FWS0400-23 | Pycnanthemum tenuifolium Schrad. | Kentucky, United States | W6 | | Not Available | 2024 | | | | | | | | Black Boxed 2024 Seeds of Success- Incorporated into the collection 4/1/2025 | 2169535 | W6 62204 |
| 101 | NA 87799 | NA 87799 | Pycnanthemum muticum (Michx.) Pers. | | NA | | Not Available | 2024 | | | | | | | Cultivated material | | 2170524 | NA 87799 |
| 102 | W6 61390 | CBG- 10815 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Illinois, United States | W6 |  | | 2023 | | | | | | | Wild material | | 2142272 | W6 61390 |
| 103 | NA 85958 | NA 85958 | Pycnanthemum muticum (Michx.) Pers. | | NA | | Not Available | 2019 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Pycnanthemum muticum. | 2154540 | NA 85958 |
| 104 | W6 49671 | CBG-2709 | Pycnanthemum tenuifolium Schrad. | Illinois, United States | |  | Historic | 2015 | COLLECTED | 09/07/2013 | | | 186 | | Wild material | | 1926130 | W6 49671 |
| 105 | W6 48884 | MARSB-0120 | Pycnanthemum tenuifolium Schrad. | New York, United States | |  | Historic | 2015 | COLLECTED | 11/13/2013 | | | 29 | | Wild material | | 1922874 | W6 48884 |
| 106 | NA 82151 | NA 82151 | Pycnanthemum sp. | Ohio, United States | NA | | Not Available | 2014 | COLLECTED | 09/24/2014 | Richard and Lucile Durrell Edge of Appalachia Preserve System: E. Lucy Braun Lynx Prairie Preserve. | 38.76429000, -83.41082000 | | Prairie with shrubby growth. | | | 1951496 | NA 82151 |
| 107 | NA 82154 | NA 82154 | Pycnanthemum sp. | Ohio, United States | NA | | Not Available | 2014 | COLLECTED | 09/24/2014 | Richard and Lucile Durrell Edge of Appalachia Preserve System: E. Lucy Braun Lynx Prairie Preserve, Annette's Prairie. | 38.76057000, -83.40919000 | | Prairie patch. | | | 1951591 | NA 82154 |
| 108 | W6 46094 | CBG-1940 | Pycnanthemum pilosum Nutt. | Illinois, United States | |  | Historic | 2013 | COLLECTED | 11/07/2011 | | | 212 | bluff, hill prairie | Wild material | | 1909022 | W6 46094 |
| 109 | NA 81433 | NA 81433 | Pycnanthemum sp. | United States | NA | | Not Available | 2011 | COLLECTED | 10/06/2011 | | | | | | | 1953232 | NA 81433 |
| 110 | NA 81323 | NA 81323 | Pycnanthemum sp. | Virginia, United States | NA | | Not Available | 2011 | COLLECTED | 05/26/2011 | G. Richard Thompson Wildlife Management Area, just off Verlin Smith Trail | 38.93568000, -78.02625000 | 515 | Edge of deciduous forest in recently clear cut area, early successional, canopy 10-15 ft. | | | 1950291 | NA 81323 |
| 111 | NA 78935 | NA 78935 | Pycnanthemum incanum Michx. | Kentucky, United States | NA | | Not Available | 2009 | COLLECTED | 10/22/2009 | Daniel Boone National Forest; Furnace Road off Chestnut Ridge Rd. (Latitude [and longitude?] approximately same as KY-2009-035). | | | East facing slope, deciduous woods. | | | 1953533 | NA 78935 |
| 112 | NSL 454621 | LBJWC-1129 | Pycnanthemum albescens Torr. & A. Gray | Texas, United States | | | Historic | 2008 | COLLECTED | 10/26/2007 | | | 50 | Flat, sandy clay. | Wild material | | 1751831 | NSL 454621 |
| 113 | NA 77934 | NA 77934 | Pycnanthemum flexuosum (Walter) Britton et al. | | NA | | Not Available | 2007 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Pycnanthemum flexuosum. | 2156999 | NA 77934 |
| 114 | Ames 27663 | JM2004021 | Pycnanthemum montanum Michx. | North Carolina, United States | NC7 |  | Not Available | 2004 | COLLECTED | 10/07/2004 | Off Forest Service Road 479, Bent Creek Experimental Forest, Buncombe County. | | | Trail side, rich mesic cove forest. | Wild material | | 1667583 | Ames 27663 |
| 115 | NA 74085 | NA 74085 | Pycnanthemum muticum (Michx.) Pers. | | NA | | Not Available | 2003 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Pycnanthemum muticum. | 2149925 | NA 74085 |
| 116 | PPYC 92 | Ames 4964 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Pennsylvania, United States | | | Historic | 1992 | COLLECTED | 1991 | Chadds Ford | | | | Wild material | For bee pasture testing | 1002541 | PPYC 92 |
| 117 | PPYC 59 | 75-2 | Pycnanthemum hybr. | Oregon, United States | | | Historic | 1990 | DONATED | 06/13/1990 | | | | | Breeding material | | 1001843 | PPYC 59 |
| 118 | PPYC 60 | 84-11 | Pycnanthemum hybr. | Oregon, United States | | | Historic | 1990 | DEVELOPED | | | | | | Breeding material | | 1001866 | PPYC 60 |
| 119 | PPYC 47 | P-109-6 | Pycnanthemum flexuosum (Walter) Britton et al. | South Carolina, United States | | | Historic | 1989 | COLLECTED | 1974 | Garnett, SC, sandy peat under open stand of Pinus palustris | | | | Breeding material | | 1001546 | PPYC 47 |
| 120 | PPYC 42 | P-99-2 | Pycnanthemum torreyi Benth. | Tennessee, United States | | | Historic | 1989 | COLLECTED | 08/20/1969 | Cookeville, TN | | | | Breeding material | | 1001421 | PPYC 42 |
| 121 | PPYC 43 | P-110-5 | Pycnanthemum flexuosum (Walter) Britton et al. | Georgia, United States | | | Historic | 1989 | COLLECTED | 07/13/1976 | | | | | Breeding material | | 1001445 | PPYC 43 |
| 122 | PPYC 46 | Hybrid 92-1 | Pycnanthemum hybr. | Oregon, United States | | | Historic | 1989 | DONATED | 03/15/1989 | | | | | Breeding material | | 1001526 | PPYC 46 |
| 123 | PPYC 34 | 1644 | Pycnanthemum incanum Michx. | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1001190 | PPYC 34 |
| 124 | PPYC 10 | P-109-1 | Pycnanthemum flexuosum (Walter) Britton et al. | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000406 | PPYC 10 |
| 125 | PPYC 11 | P-110-1 | Pycnanthemum flexuosum (Walter) Britton et al. | Georgia, United States | | | Historic | 1988 | COLLECTED | | | | | | Breeding material | | 1000443 | PPYC 11 |
| 126 | PPYC 12 | P-111-2 | Pycnanthemum albescens Torr. & A. Gray | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000480 | PPYC 12 |
| 127 | PPYC 15 | P-114-1 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Indiana, United States | | | Historic | 1988 | COLLECTED | 10/20/1976 | Hickory Grove, Martin County, Indiana | | | | Breeding material | | 1000584 | PPYC 15 |
| 128 | PPYC 16 | P-114-2 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Indiana, United States | | | Historic | 1988 | COLLECTED | 10/20/1979 | Hickory Grove, Martin County, Indiana | | | | Breeding material | | 1000618 | PPYC 16 |
| 129 | PPYC 18 | P-115-2 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000691 | PPYC 18 |
| 130 | PPYC 19 | P-115-3 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000727 | PPYC 19 |
| 131 | PPYC 20 | P-115-4 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Indiana, United States | | | Historic | 1988 | COLLECTED | 10/17/1976 | Perry County, Indiana | | | | Breeding material | | 1000761 | PPYC 20 |
| 132 | PPYC 21 | P-115-5 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000793 | PPYC 21 |
| 133 | PPYC 25 | 1645-1 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Connecticut, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000912 | PPYC 25 |
| 134 | PPYC 27 | 1661-3 | Pycnanthemum pycnanthemoides (Leavenw.) Fernald | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000968 | PPYC 27 |
| 135 | PPYC 29 | 1671 | Pycnanthemum setosum Nutt. | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1001039 | PPYC 29 |
| 136 | PPYC 3 | P-81 | Pycnanthemum albescens Torr. & A. Gray | Oregon, United States | | | Historic | 1988 | DONATED | 04/26/1988 | | | | | Breeding material | | 1000122 | PPYC 3 |
| 137 | PPYC 4 | P-85 | Pycnanthemum muticum (Michx.) Pers. | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000168 | PPYC 4 |
| 138 | PPYC 5 | P-86 | Pycnanthemum albescens Torr. & A. Gray | Oregon, United States | | | Historic | 1988 | DEVELOPED | | | | | | Breeding material | | 1000212 | PPYC 5 |
| 139 | PPYC 7 | P-92-1 | Pycnanthemum muticum (Michx.) Pers. | Tennessee, United States | | | Historic | 1988 | COLLECTED | 04/19/1967 | Mayland, Dry disturbed area between railroad and highway | | | | Breeding material | | 1000292 | PPYC 7 |
| 140 | Ames 5020 | Index Seminum 338 | Pycnanthemum tenuifolium Schrad. | Michigan, United States | | | Historic | 1986 | COLLECTED | | Beal Garden, Michigan State University, East Lansing. | | | | Cultivated material | For bee pasture testing. | 1029935 | Ames 5020 |
| 141 | Ames 4173 | 793 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | Michigan, United States | | | Historic | 1985 | COLLECTED | 1984 | Jackson County. | | | Marshy lake border. | Wild material | Perennial aromatic herb. For bee plant study. | 1027191 | Ames 4173 |
| 142 | NA 48334 | NA 48334 | Pycnanthemum muticum (Michx.) Pers. | | NA | | Not Available | 1981 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Pycnanthemum muticum. | 2145388 | NA 48334 |
| 143 | NA 47434 | NA 47434 | Pycnanthemum virginianum (L.) T. Durand & B. D. Jacks. ex B. L. Rob. & Fernald | | NA | | Not Available | 1981 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Pycnanthemum virginianum. | 2145344 | NA 47434 |