| 0 | Ames 36251 | JDC/UT/2024/008/1130 | Ulmus thomasii Sarg. | Minnesota, United States | NC7 |  | | 2024 | COLLECTED | 06/05/2024 | Near southeast edge of Kasota Lake approximately 9.0 miles east, southeast of Willmar, T119N R34W SE 1/4 NE 1/4 Sec. 36 and also Robbins Island Park in Wilmar, T119N R35W Sec. 11. | 45.07399600, -94.88484100 | 352 | Deciduous woods | Wild material | Ulmus thomasii (Rock elm) is an underutilized tree species both in conservation and in the urban landscape. Described by Charles Sprague Sargent (first director for the Arnold Arborteum) as "heavy, hard, very strong and tough, closely grained, and susceptible of receiving a beautiful polish". Historically noted for a variety of uses in woodworking including furniture, heavy agricultural implements, timber frame buildings, pianos, hockey sticks, and hand tools. Ulmus thomasii is extremely drought tolerant, adaptable to very calcareous soils, and compared to U. americana or U. rubra has a very conservative growth rate requiring minimal attention in regards to pruning. Rock elm naturally tends to develop into a nice structural specimen in the landscape, unlike other fast growing cultivars in the nursery trade needing frequent attention. Rock elm has very fissured bark and is well known for maintaining a strong central leader resulting in a very attractive, pyramidal form. Despite many literature sources stating that "wings" on the stems are a key identifiying characteristic, this trait is not reliable and many genotypes may completely lack "wings" on the stems. While growth habit and morphology of dormant buds (very pointy) are good traits to help aid in identification, fruits are the best way to confirm identity. Fruits are densly pubescent, often described as "inflated" and generally reach maturity a couple weeks after Ulmus rubra and Ulmus americana. U. thomasii inflorescences are rather distinguishable from other Ulmus in being pendulous. Fruits are extremely prized treats for many birds, where fruits are often "robbed" prior to full maturity. Fruits are also highly prized by many other animals such as mice, squirrels, chipmunks, turkeys, etc. and are generally consumed within hours after fruit abscission. The native range of U. thomasii is concentrated in the northeastern United States and into Canada with disjunct populations documented in northwestern Missouri and northwestern Arkansas (Little, E. L. Jr. 1971). In the 1895 Silva of North America (vol. 7) it was stated that, “The value of the wood of the Rock Elm threatens its extinction and most of the large trees have already been cut.” Today, while rock elm is rather rare, especially in areas near the edges of its range, many states list the species as endangered or threatened warranting preservation efforts. Genetics of this accession would be representative of the species northwestern edge of its native range. Majority of specimens noted did not have characteristic "wings" on the stems and measured approximately 20" DBH or more with a few specimens nearing 30". Heights estimated between 70-90'. Rock elm in this area could be classified as locally abundant. | 2167953 | Ames 36251 |
| 1 | Ames 34208 | NAO/UT/2018/23/48 | Ulmus thomasii Sarg. | Illinois, United States | NC7 |  | | 2018 | COLLECTED | 05/31/2018 | Private property located 2.0 miles northeast of Plano along Big Rock Creek just off Needham Road, T37N R6E SW 1/4 NE 1/4 Sec. 14 | 41.68543300, -88.51368600 | 188 | Flat open (mowed) areas and edge of woods. | Wild material | Ulmus thomasii (Rock elm) is an underutilized tree species both in conservation and in the urban landscape. Charles Sprague Sargent (first director of the Arnold Arboretum of Harvard University, Boston, MA) described the wood of Rock Elm as "heavy, hard, very strong and tough, closely grained, and susceptible of receiving a beautiful polish". Historically noted for a variety of uses in woodworking including furniture, heavy agricultural implements, timber frame buildings, pianos, hockey sticks, and hand tools. U. thomasii is extremely drought tolerant, adaptable to very calcareous soils, and compared to U. americana or U. rubra has a very conservative growth rate requiring minimal attention in regards to pruning. Rock elm naturally tends to develop into a nice structural specimen in the landscape, unlike other fast growing U. americana cultivars in the nursery trade needing frequent attention. Rock elm has very fissured bark and is well known for maintaining a strong central leader resulting in a very attractive, pyramidal form. Despite many literature sources stating that "wings" on the stems are a key identifiying characteristic, this trait is not reliable and many genotypes may completely lack "wings" on the stems. While growth habit and morphology of dormant buds (very pointy) are good traits to help aid in identification, fruits are the best way to confirm identity. Fruits are densly pubescent, often described as "inflated" and generally reach maturity a couple weeks after U. rubra and U. americana. U. thomasii inflorescences are rather distinguishable from other Ulmus in being pendulous. Fruits are extremely prized treats for many birds, where fruits are often "robbed" prior to full maturity. Fruits are also highly prized by many other animals such as mice, squirrels, chipmunks, turkeys, etc. and are generally consumed within hours after fruit abscission. The native range of U. thomasii is concentrated in the northeastern United States and into Canada with disjunct populations documented in northwestern Missouri and northwestern Arkansas (Little, E. L. Jr. 1971). In the 1895 Silva of North America (vol. 7) it was stated that, “The value of the wood of the Rock Elm threatens its extinction and most of the large trees have already been cut.” Today, since rock elm is rather rare, especially in areas near the edges of its range, many states list the species as endangered or threatened warranting preservation efforts. Genetics of this accession were collected on private property in north central Illinois (Kendall County) from a localized population in nature represented by 10-16" DBH specimens with little to no signs of decline. | 1963391 | Ames 34208 |
| 2 | Ames 34201 | NAO/UR/2018/22/47 | Ulmus rubra Muhl. | Iowa, United States | NC7 |  | | 2018 | COLLECTED | 05/24/2018 | Private property located 5.0 miles west of Grinnell off N 39th Ave E., T80N R17W NW ¼ SW ¼ Sec. 15, Jasper County | 41.73626700, -92.82183600 | 325 | Dry ridge top. Old-growth remnant woods historically and currently utilized as cattle pasture. | Wild material | Mature 20-26" d.b.h. (inches) specimens with little to no signs of decline. | 1963308 | Ames 34201 |
| 3 | Ames 27341 | JDC/UT/2017/021/775 | Ulmus thomasii Sarg. | Nebraska, United States | NC7 |  | | 2003 | COLLECTED | | Ponca State Park just north of Ponca approximately 2.75 miles T30N R6E N1/3 SE 1/4 Sec. 3 | 42.60173800, -96.71222100 | 383 | Eastern slopes and ridges of loess bluffs | Wild material | Ulmus thomasii (Rock elm) is an underutilized tree species both in conservation and in the urban landscape. Charles Sprague Sargent (first director of the Arnold Arboretum of Harvard University, Boston, MA) described the wood of Rock Elm as "heavy, hard, very strong and tough, closely grained, and susceptible of receiving a beautiful polish". Historically noted for a variety of uses in woodworking including furniture, heavy agricultural implements, timber frame buildings, pianos, hockey sticks, and hand tools. U. thomasii is extremely drought tolerant, adaptable to very calcareous soils, and compared to U. americana or U. rubra has a very conservative growth rate requiring minimal attention in regards to pruning. Rock elm naturally tends to develop into a nice structural specimen in the landscape, unlike other fast growing U. americana cultivars in the nursery trade needing frequent attention. Rock elm has very fissured bark and is well known for maintaining a strong central leader resulting in a very attractive, pyramidal form. Despite many literature sources stating that "wings" on the stems are a key identifiying characteristic, this trait is not reliable and many genotypes may completely lack "wings" on the stems. While growth habit and morphology of dormant buds (very pointy) are good traits to help aid in identification, fruits are the best way to confirm identity. Fruits are densly pubescent, often described as "inflated" and generally reach maturity a couple weeks after U. rubra and U. americana. U. thomasii inflorescences are rather distinguishable from other Ulmus in being pendulous. Fruits are extremely prized treats for many birds, where fruits are often "robbed" prior to full maturity. Fruits are also highly prized by many other animals such as mice, squirrels, chipmunks, turkeys, etc. and are generally consumed within hours after fruit abscission. The native range of U. thomasii is concentrated in the northeastern United States and into Canada with disjunct populations documented in northwestern Missouri and northwestern Arkansas (Little, E. L. Jr. 1971). In the 1895 Silva of North America (vol. 7) it was stated that, “The value of the wood of the Rock Elm threatens its extinction and most of the large trees have already been cut.” Today, since rock elm is rather rare, especially in areas near the edges of its range, many states list the species as endangered or threatened warranting preservation efforts. This accession was collected in northeast Nebraska (Dixon County) at Ponca State Park representing genetics from the extreme northwestern edge of the species native range and includes genetics (#775-6) from the current (2022) state champion. In an assessment of seedlings from all mother trees sampled (Carstens, J., personal communication, 12 April 2022), #775-4 produces the most vigorous seedlings which also consistently exhibited extremely corky/winged stems on new seedlings. Seedlings from other maternal lines show both winged and non-winged seedlings within the same maternal line and seedlings from some maternal lines have no wings. | 1649925 | Ames 27341 |
| 4 | PI 670383 | PRC-06-IN/116-386 | Agropyron michnoi Roshev. | Nei Mongol Zizhiqu, China | W6 |  | | 2007 | COLLECTED | 08/28/2006 | 43 km southwest of Jingpeng Town, Keshiketeng County | 43.06222222, 117.05888889 | 1304 | On sand dunes in hilly shrubby-steppe | Wild material | Hunshandake Sand Land, spike long and narrow | 1722555 | PI 670383 |
| 5 | PI 676149 | PRC-06-IN/083-256 | Agropyron cristatum (L.) Gaertn. | Nei Mongol Zizhiqu, China | W6 | | | 2007 | COLLECTED | 08/23/2006 | 8 km northwest of Yi?ershi town, Xing'an Meng | 47.32055556, 119.74444444 | 874 | On steep, stoney slope of low mountains in mountain steppe | Wild material | | 1722515 | PI 676149 |
| 6 | PI 693773 | PRC-06-IN/116-382 | Agropyron cristatum (L.) Gaertn. | Nei Mongol Zizhiqu, China | W6 | | | 2007 | COLLECTED | 08/28/2006 | 43 km southwest of Jingpeng Town, Keshiketeng County | 43.06222222, 117.05888889 | 1304 | On sand dunes in hilly shrubby-steppe | Wild material | Hunshandake Sand Land, spike short and narrow | 1722553 | PI 693773 |
| 7 | Ames 36697 | APS/JC/2025/XXX/XXX | Juniperus communis L. | Iowa, United States | NC7 |  | | 2025 | COLLECTED | 09/15/2025 | Located off Iowa River Drive approximately 2.5 miles southwest of New Albin, T100N R4W NE 1/4 NW 1/4 Sec. 21. | 43.46830000, -91.32128000 | 207 | Sandy ridge of a power line cut. | Wild material | | 2192820 | Ames 36697 |
| 8 | Ames 36260 | Thomson Causeway Recreation Area | Cornus drummondii C. A. Mey. | Illinois, United States | NC7 |  | | 2024 | COLLECTED | 08/19/2024 | Thomson Causeway Recreation Area, approximately 1 mile southwest of Thomson. Scattered along Potter Road starting just east of the causeway heading west, and along the gravel service road to the south. T23N R3E SE 1/4 Sec. 26. | 41.94919700, -90.11822100 | 179 | Floodplain of wetland complex along east bank of Mississippi River. Soils are moist and seasonally inundated with high organic matter content. | Wild material | Shrubs in nature measuring approximately 10 feet in height (to 15 feet) with varying degrees of red pigmentation on the pedicles. Peak fruit ripening occurred in late August 2024. Minor foliar disease noted at the time of collection. Growing as individual shrubs in shadier locations and forming thickets in sunnier sites. | 2168984 | Ames 36260 |
| 9 | W6 61347 | CBG- 10759 | Brachyelytrum erectum (Schreb.) P. Beauv. | Wisconsin, United States | W6 |  | | 2023 | | | | | | | Wild material | | 2142229 | W6 61347 |
| 10 | Ames 36017 | AS/GD/2023/002/212 | Gymnocladus dioicus (L.) K. Koch | Wisconsin, United States | NC7 |  | | 2023 | | | | | | | Wild material | Kentucky coffeetree in Wisconsin is rather rare. The Wisconsin Natural Heritage Inventory Program currently (2023) lists this taxon in Wisconsin as a species of concern with a state rank of S2 (Imperiled in Wisconsin due to a restricted range, few populations or occurrences, steep declines, severe threats, or other factors.) This accession represents genetics from a localized population with a near equal porportion of male and female specimens. While there are other known locations along the Wisconsin River, this population is producing seeds. The other known locations represent single clones that are distant enough from other existing clones that prevent the transfer of pollen and thus lack the ability to produce seed or will rarely produce. | 2141550 | Ames 36017 |
| 11 | NA 89039 | RJL2022IL-001 | Ptelea trifoliata L. | Illinois, United States | NA | | | 2022 | COLLECTED | 09/28/2022 | Site of plant habitat is located at 823 E Co Rd 1220, Hamilton, IL 62341 which is the property where Jacob's Geode Shop and Mine is located. This species is scattered and relatively common throughout the woodlands on this site. | 40.37848400, -91.35390200 | 175 | Plants growing in shade to part-shade of deciduous woodlands above a small creek.
Soils: The underlying geology of this area is of Mississippian origin and comprised of Warsaw Formation and Salem Limestone. Major lithological components include limestone that can be shaly, oolitic, bioclastic, or cherty. Minor lithological components include siltstone that can contain geodes or drusy quartz and can be calcareous.
Source: USGS Illinois Geologic Map Data (https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=ILMws%3B0)
The surface soil profile of this area is Coffeen silt loam, 0 to 2 percent slopes, that are frequently flooded. The Coffeen series consists of very deep, somewhat poorly drained, moderately permeable soils on flood plains, low terraces or benches, toe slopes, and alluvial fans. They formed in silty alluvium. Much of the alluvium is of local origin derived from the nearby loess-covered uplands.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2139604 | NA 89039 |
| 12 | Ames 35884 | AS/MR/2022/003/133 | Morus rubra L. | Iowa, United States | NC7 |  | | 2022 | COLLECTED | 07/06/2022 | Chichaqua Bottoms Greenbelt located northeast of Bondurant, T81N R22W Sec. 33 and also T80N R22W Sec. 10. | 41.78917100, -93.41777300 | 247 | Floodplain. | Wild material | Specimens sampled in nature displayed the following morphological characters: elongated acuminate leaf tips, impressed veins, pubescent upper and lower leaves, flaky bark (often with tiny pin holes (insect emergence holes)), cordate leaf base, and umbrella-shaped growth habit. Majority of specimens were approximately 30-50' in height with the largest diameter specimen (133-6) measuring 19.5" DBH. All M. rubra specimens noted were exhibiting determinate growth compared to local hybrids and M. alba, which were still actively growing with newly emerging leaves. Soluble solids content for fruit samples collected in nature ranged from 12.8-22.8 degrees Brix. This range of Brix values is likely a result of genetic diversity and also variation in maturity of fruits. The highest Brix value was from specimen 133-4. | 2138217 | Ames 35884 |
| 13 | OPGC 7576 | McFarland Park | Solidago flexicaulis L. | Iowa, United States | OPGC |  | | 2021 | COLLECTED | 09/26/2021 | McFarland Park just north, northeast of Ames, T84N R23W Sec. 7 | 42.09667500, -93.57083500 | 288 | Moist areas near streambanks and bottomlands in hardwood forest understory. | Wild material | Plants in nature ranged in height from approximately one to three feet, growing as spreading clumps. Peak flowering in 2021 occurred near 18 September. | 2132830 | OPGC 7576 |
| 14 | Ames 35746 | Guye Woods | Acer saccharum Marshall subsp. nigrum (F. Michx.) Desmarais | Iowa, United States | NC7 |  | | 2021 | COLLECTED | 09/08/2021 | Guye Woods County Park located 6.0 miles northeast of Winterset, T76N R27W NE1/4 Sec. 4 | 41.41235000, -93.96373000 | 278 | Moist deciduous maple, oak, hickory forest, northwest facing slope above the North River. | Wild material | Multiple specimens in this population were observed to be 24" diameter at breast height (DBH) or larger with the largest specimen encountered at the time of collection measuring 36.5" DBH.
Morphological traits of leaves suggests sampled specimens are true to type of Acer saccharum subsp. nigrum including leaves with three distinct points, leathery/thick, and drooping in appearance. On September 25, 2020 (Schmitz, A., personal communication, 31 January 2022), peak fall color on Acer saccharum subsp. nigrum at Guye Woods was observed with specimens having a clean yellow fall color, also indicative of Acer saccharum subsp. nigrum.
| 2122010 | Ames 35746 |
| 15 | OPGC 7496 | CBG-9546 | Solidago ulmifolia Muhl. ex Willd. | Illinois, United States | OPGC |  | | 2019 | | | | | | | Wild material | | 2092814 | OPGC 7496 |
| 16 | Ames 33918 | APS/GD/2017/008/267 | Gymnocladus dioicus (L.) K. Koch | Minnesota, United States | NC7 |  | | 2017 | COLLECTED | 03/16/2017 | Minnesota River watershed covering approximately 9.0 river miles between Redwood Falls and Vicksburg Park, Renville County | 44.61447700, -95.14878600 | 254 | Mixed habitats, both upland dry sites, wet sites, and rocky sites. | Wild material | | 1946985 | Ames 33918 |
| 17 | Ames 33921 | APS/GD/2016/001/236 | Gymnocladus dioicus (L.) K. Koch | Minnesota, United States | NC7 |  | | 2017 | COLLECTED | 03/17/2017 | Blue Earth River watershed covering approximately 9.0 river miles from Vernon Center south to the county line, Blue Earth and Faribault Counties | 43.87215300, -94.17375800 | 316 | Mixed habitats, both upland dry and wet sites. | Wild material | | 1946988 | Ames 33921 |
| 18 | Ames 33289 | APS/GD/2016/010/245 | Gymnocladus dioicus (L.) K. Koch | Michigan, United States | NC7 |  | | 2016 | COLLECTED | 04/05/2016 | Ionia County: T5N R5W SW 1/4 SW 1/4 SE 1/4 Sec. 21; T5N R5W NE 1/4 NW 1/4 NW 1/4 Sec. 20; and T5N R5W SW 1/4 SW 1/4 SE 1/4 Sec. 20 along Grand River approximately 4.80 miles south and slightly west of Portland. | 42.80296200, -84.91275400 | 231 | Floodplain. | Wild material | | 1940346 | Ames 33289 |
| 19 | Ames 32965 | JDC/BA/2015/051/708 | Betula alleghaniensis Britton | Iowa, United States | NC7 | | | 2015 | COLLECTED | 09/15/2015 | Yellow River State Forest, T97N R4W northern edge of SW 1/4 NW 1/4 Sec. 36 | 43.17782100, -91.26584600 | 227 | North-facing algific talus slope (45-60 degrees) adjacent to Paint Creek. Moist deciduous woods. Growing in association with Fraxinus nigra, Staphylea trifolia, Carpinus caroliniana, Quercus rubra, Acer saccharum, Cornus alternifolia, Amelanchier arborea, Ostrya virginiana, Viburnum opulus var. americanum, Cornus rugosa, Cornus alternifolia, Zanthoxylum americanum, Viburnum rafinesqueanum, Cypripedium pubescens, Ribes sp.,Corylus sp., Juniperus virginiana, Dirca palustris, Ulmus thomasii, Prunella vulgaris, Diervilla lonicera, Quercus macrocarpa, Carya cordiformis, Taxus canadensis, Tilia americana, Adiantum pedatum, and Aconitum noveboracense. | Wild material | | 1927435 | Ames 32965 |
| 20 | Ames 32966 | JDC/VA/2015/052/709 | Viburnum opulus L. var. americanum Aiton | Iowa, United States | NC7 |  | | 2015 | COLLECTED | 09/15/2015 | Yellow River State Forest, T97N R4W northern edge of SW ¼ NW ¼ Sec. 36. | 43.17778200, -91.26642800 | 239 | North-facing algific talus slope (45-60 degrees) adjacent to Paint Creek. Moist deciduous woods. | Wild material | Formerly known as Viburnum trilobum, American highbush cranberry (V. opulus var. americanum) is a North American native shrub that is utilized as an important ornamental and conservation plant that is also harvested as a minor fruit crop (jams/jellies). In nature, this variety is generally found in moist habitats typically along stream banks and swamps where ample moisture is readily available. The native range of V. opulus var. americana is concentrated in the northeastern United States and into Canada (Little, E. L. Jr. 1977). Attractive ornamental characteristics includes showy lacecap flowers in spring and bright red fruits and foliage in the fall. Fruits are tart with a hint of sweetness. The European highbush cranberry (V. opulus var. opulus) is nearly identical to American highbush cranberry other than small glands (<1 mm) on the petiole making the exact determination very challenging resulting in common misidentifications. A major difference between the American and European highbush cranberries is that the European variety produces unpalatable fruit. Recent research has shown that American and European highbush cranberries are genetically distinct and that plants of hybrid origin are uncommon (Tork et al. 2025). Vigorous early spring growth and good tolerance to late spring frosts. Genetic analysis from Tork et al. 2025 confirmed that genetics of this accession represents American highbush Cranberry (Viburnum opulus var. americanum). This accession represents genetics from northeast Iowa and thus the extreme western edge of the species native range. | 1927436 | Ames 32966 |
| 21 | Ames 32895 | APS/GD/2015/018/200 | Gymnocladus dioicus (L.) K. Koch | Oklahoma, United States | NC7 |  | | 2015 | COLLECTED | 03/15/2015 | Canadian County: Near/adjacent to unnamed creek that empties into the Canadian River, T12N R10W SW 1/4 Sec. 20. Private property approximately 4 miles northeast of Hinton. | 35.49409300, -98.28655400 | 434 | Bottomland. | Wild material | | 1925361 | Ames 32895 |
| 22 | Ames 32899 | APS/GD/2015/026/208 | Gymnocladus dioicus (L.) K. Koch | Oklahoma, United States | NC7 |  | | 2015 | COLLECTED | 03/17/2015 | Roger Mills County: Cottonwood Creek and Dugout Creek watersheds, T17N R25W NE 1/4 SE 1/4 Sec. 34. Antelope Hills area approximately 7 miles northeast of Durham. | 35.90486100, -99.84879100 | 664 | Lower elevations. | Wild material | | 1925365 | Ames 32899 |
| 23 | Ames 32904 | APS/GD/2015/032/214 | Gymnocladus dioicus (L.) K. Koch | Oklahoma, United States | NC7 |  | | 2015 | COLLECTED | 03/19/2015 | Osage County: Sand Creek watershed area, T27N R8E SE 1/4 NW 1/4 Sec. 10. Tallgrass Prairie Preserve approximately 13 miles northwest of Pawhuska. | 36.83425300, -96.43091600 | 307 | Dry, rocky outcroppings and floodplain. | Wild material | | 1925370 | Ames 32904 |
| 24 | Ames 32835 | GA14014001 | Fraxinus pennsylvanica Marshall | North Dakota, United States | NC7 |  | | 2014 | COLLECTED | 10/30/2014 | Bottineau County, Turtle Mountains. | 48.97000000, -100.45000000 | 737 | Mixed oak-aspen forest | Wild material | | 1921828 | Ames 32835 |
| 25 | WLP 1746 | Ames 32838 | Viburnum opulus L. var. americanum Aiton | North Dakota, United States | NA | | | 2014 | COLLECTED | 10/31/2014 | Turtle Mountains - Bottineau County. | 48.95000000, -100.43000000 | 692 | Wet, aspen forest. Growing in association with Sanicula marilandica, Fragaria virginiana, Trifolium repens, Rubus sp., Typha latifolia, Prunus pensylvanica, Prunus virginiana, Corylus sp., Crataegus sp., Viburnum lentago, Rosa sp., Cornus sericea, Amelanchier sp., Symphoricarpos sp., Salix sp., Betula papyrifera, Populus tremuloides, Ulmus americana, Acer negundo, Quercus macrocarpa, and Fraxinus pennsylvanica. | Wild material | | 1921831 | WLP 1746 |
| 26 | WLP 1967 | HBC1401 | Viburnum opulus L. var. americanum Aiton | North Dakota, United States | NA | | | 2014 | COLLECTED | 09/29/2014 | Jay Wessels Wildlife Management Area located in Pembina County. | 48.80000000, -97.83000000 | 312 | Diverse habitats including edge of swamp and also upland sandy soils. Growing in association Fraxinus pennsylvanica, Fraxinus nigra, Quercus macrocarpa, Acer negundo, Ulmus americana, Populus tremuloides, Populus balsamifera, Toxicodendron radicans, Cornus sericea, Rosa sp., Corylus sp., Prunus virginiana, Ribes sp., Equisetum sp., Rubus sp., IMpatiens capensis, Thalictrum dasycarpum, Fragaria virginiana, Asarum canadense, Calamagrostis canadensis, Sium suave, Solidago gigantea, Poa pratensis, and Bromus inermis. | Wild material | | 1921830 | WLP 1967 |
| 27 | NA 82038 | JDC/QM/2014/052/554 | Quercus michauxii Nutt. | Missouri, United States | NA |  | | 2014 | COLLECTED | 09/19/2014 | Missouri: Mississippi County; Big Oak Tree State Park. | 36.64463600, -89.28721300 | 108 | Native, wet woods. Growing in association with Fraxinus sp., Liquidambar styraciflua, Carya laciniosa, Quercus macrocarpa, and Ulmus sp. | Wild material | Acorns rather green approximately 2-3 weeks away from peak maturity. Specimen sampled approximatley 100' in height. | 1922339 | NA 82038 |
| 28 | Ames 32222 | APS/GD/2013/014/099 | Gymnocladus dioicus (L.) K. Koch | Illinois, United States | NC7 | | | 2014 | COLLECTED | 03/20/2014 | Timber Creek watershed, Section 19, T22N, R1E, and Section 24, T22N, R1W, just northeast of McLean, McLean County. | 40.34355000, -89.14919700 | 214 | Floodplain. | Wild material | | 1917826 | Ames 32222 |
| 29 | Ames 32197 | GA13009001 | Fraxinus pennsylvanica Marshall | Minnesota, United States | NC7 |  | | 2014 | COLLECTED | 09/23/2013 | Clearwater County. | 47.18397220, -95.47407220 | | Mixed upland deciduous forest. | Wild material | | 1917223 | Ames 32197 |
| 30 | Ames 32096 | BA13009001 | Fraxinus nigra Marshall | Minnesota, United States | NC7 |  | | 2013 | COLLECTED | 09/23/2013 | T144N R38W, Clearwater County. | 47.25711000, -95.49000667 | 543 | Edges of lakes and forest edges. Growing in association with Fraxinus pennsylvanica, Quercus macrocarpa, Ulmus americana, Populus tremuloides, Populus balsamifera, Acer saccharum, Betula papyrifera, Salix sp., Larix laricina, Quercus rubra, Abies balsamea, Picea glauca, Sambucus canadensis, Cornus rugosa, Acer spicatum, Rosa sp., Viburnum opulus var. americanum, Viburnum dentatum, Alnus sp., Cornus canadensis, Corylus sp., Prunus virginiana, Ribes sp., Prunus pensylvanica, Rhamnus alnifolia, Equisetum sp., Carex sp., Rubus sp., Impatiens capensis, Bromus sp., and Thalictrum dasycarpum. | Wild material | D.B.H. ranged between 3 and 6 inches. | 1914713 | Ames 32096 |
| 31 | Ames 32092 | Ames 32092 | Viburnum rufidulum Raf. | Missouri, United States | NC7 | | | 2013 | COLLECTED | 10/13/2013 | Private property, north of 27640 EE Highway, NE 1/4 of SE 1/4 of Section 4, T47N R15W, Prairie Home, Prairie Home Quad, Cooper County. | 38.85910000, -92.56030000 | 236 | Wooded hillside. North-facing slope. | Wild material | | 1914036 | Ames 32092 |
| 32 | Ames 32018 | APS/GD/2013/032/117 | Gymnocladus dioicus (L.) K. Koch | Missouri, United States | NC7 |  | | 2013 | COLLECTED | 04/09/2013 | Poosey Conservation Area, Livingston County. | 39.94995200, -93.71471700 | 267 | Floodplain. | Wild material | A total of four areas containing Gymnocladus dioicus were noted throughout Poosey Conservation Area. Each area was represented by approximately 2-6 specimens. Specimens ranged between 14-22.5 inches d.b.h. and approximately 90-110 feet in height. Pod production during the 2012 growing season was minimal/below average. Samples 473-1 and 473-2 were very close together (approximately 10 feet apart) and samples 473-3 and 473-4 were also very close together (approximately 48 feet apart). Samples this close together may potentially represent material from a single clone due to the clonal suckering habit of Gymnocladus dioicus. | 1908307 | Ames 32018 |
| 33 | Ames 31982 | APS/GD/2013/004/089 | Gymnocladus dioicus (L.) K. Koch | Kansas, United States | NC7 |  | | 2013 | COLLECTED | 02/18/2013 | Walnut Creek watershed, southwest of Marysville, Sections 5, 8, and 17, T3S R6E, Marshall County. | 39.79300943, -96.78506600 | 382 | Dry floodplain. | Wild material | | 1907535 | Ames 31982 |
| 34 | Ames 31985 | APS/GD/2013/009/094 | Gymnocladus dioicus (L.) K. Koch | Kansas, United States | NC7 |  | | 2013 | COLLECTED | 02/19/2013 | East Elkhorn Creek, north of Ellsworth, Sections 4 and 33, T14S R7W, Ellsworth and Lincoln Counties. | 38.87404143, -98.10311729 | 455 | Dry floodplain. | Wild material | | 1907538 | Ames 31985 |
| 35 | Ames 31987 | APS/GD/2013/011/096 | Gymnocladus dioicus (L.) K. Koch | Kansas, United States | NC7 |  | | 2013 | COLLECTED | 02/20/2013 | Camp Wood, near Cottonwood River, south of Elmdale, NW 1/4 of Section 3, T20S R7E, Chase County. | 38.34698100, -96.65080500 | 377 | Samples obtained from both upland, rocky and floodplain habitat. | Wild material | | 1907540 | Ames 31987 |
| 36 | Ames 31988 | APS/GD/2013/012/097 | Gymnocladus dioicus (L.) K. Koch | Kansas, United States | NC7 |  | | 2013 | COLLECTED | 02/21/2013 | Canville Creek, west of Savonburg, SW 1/4 of Section 25, T26S R20E, Allen County. | 37.74857200, -95.17660125 | 304 | Dry floodplain. | Wild material | Largest Gymnocladus dioicus specimen was 29.5 inches d.b.h. | 1907541 | Ames 31988 |
| 37 | Ames 31989 | APS/GD/2009/001/010 | Gymnocladus dioicus (L.) K. Koch | Kansas, United States | NC7 |  | | 2013 | COLLECTED | 02/21/2013 | Clinton State Park, west of Lawrence, Section 12, T13S R18E, Douglas County. | 38.93730038, -95.36213950 | 282 | Fairly dry, upland site. Majority of specimens found on upland areas. | Wild material | | 1907542 | Ames 31989 |
| 38 | Ames 31676 | GA12010001 | Fraxinus pennsylvanica Marshall | Minnesota, United States | NC7 |  | | 2012 | COLLECTED | NEAR 09/24/2012 | Near Mashaug Creek just north of Twin Valley, Norman County. | 47.28851660, -96.26865000 | 327 | Upland forest, dominated by Populus deltoides. | Wild material | | 1906587 | Ames 31676 |
| 39 | Ames 31678 | GA12003001 | Fraxinus pennsylvanica Marshall | Minnesota, United States | NC7 |  | | 2012 | COLLECTED | NEAR 09/26/2012 | Buffalo River State Park along the Buffalo River, east of Glyndon, Clay County. | 46.86481660, -96.46406660 | 302 | Floodplain. Transistion zone between prairie and forest | Wild material | | 1906589 | Ames 31678 |
| 40 | Ames 31679 | GA12011001 | Fraxinus pennsylvanica Marshall | North Dakota, United States | NC7 |  | | 2012 | COLLECTED | NEAR 09/27/2012 | Sheyenne National Grassland along the Sheyenne River just east of Lisbon near Richland and Ransom County line. | 46.53246660, -97.26656660 | 302 | Riverbank and transition area of tallgrass prairie and riparian forest. Sandy-silt soil with good drainage and ph of ~7 | Wild material | Population located close to windbreak planted with Fraxinus. | 1906590 | Ames 31679 |
| 41 | Ames 31254 | JDZ/11/007/001 | Fraxinus pennsylvanica Marshall | North Dakota, United States | NC7 |  | | 2011 | COLLECTED | 10/26/2011 | North side of Devil's Lake, Gilbert C. Grafton State Military Reservation, Sections 20, 28, and 29, T153N, R64W, Camp Grafton Quad, Ramsey County. | 48.05360000, -98.90790000 | 450 | | Wild material | D.B.H. between 4 and 14 inches. | 1897492 | Ames 31254 |
| 42 | Ames 31255 | JDZ/11/008/001 | Fraxinus pennsylvanica Marshall | North Dakota, United States | NC7 |  | | 2011 | COLLECTED | 10/26/2011 | South side of Devil's Lake, Sully's Hill National Game Preserve, Section 15, T152N, R65W, Fort Totten Quad, Benson County. | 47.98560000, -98.96810000 | 475 | 10 degrees of slope with southern and southwestern aspects. | Wild material | D.B.H. between 4 and 14 inches. | 1897493 | Ames 31255 |
| 43 | Ames 30620 | JDZ/2010/002/001 | Fraxinus nigra Marshall | Minnesota, United States | NC7 |  | | 2010 | COLLECTED | 09/11/2010 | Northeastern shore of Lake Ida east to eastern shore of Detroit Lake, Becker County. | 46.73107400, -95.94890000 | 413 | Along edge of roads and edge of mixed deciduous forests. Low spots, but not swampy. | Wild material | Unless otherwise noted, requests will be filled using a balanced sample. | 1849378 | Ames 30620 |
| 44 | Ames 30482 | APS/GD/2010/002/037 | Gymnocladus dioicus (L.) K. Koch | Missouri, United States | NC7 |  | | 2010 | COLLECTED | 02/17/2010 | Lake of the Ozarks, Grandglaize Creek Watershed, T39N R15W NW 1/4 Sec. 36 and NE 1/4 of SE 1/4 Sec. 35, Toronto Quad, Miller County. | 38.07386700, -92.52686700 | 207 | Mixed deciduous woods. | Wild material | | 1831341 | Ames 30482 |
| 45 | Ames 30090 | 01A | Fraxinus pennsylvanica Marshall | Kansas, United States | NC7 |  | | 2009 | COLLECTED | 09/14/2009 | Along Cedar Creek, 4.5 miles south of Cedar Point, Chase County. | 38.19250000, -96.81194444 | | Along a stream. | Wild material | | 1813253 | Ames 30090 |
| 46 | Ames 29974 | JDC/GD/2009/003/153 | Gymnocladus dioicus (L.) K. Koch | Iowa, United States | NC7 |  | | 2009 | COLLECTED | 03/19/2009 | Stone State Park, just northwest of Sioux City, T89N R48W west 1/2 of Sec. 1 and east 1/2 of Sec. 2 Sioux City Quad., extreme northwest corner of Woodbury County. | 42.55805556, -96.46861111 | 390 | Variable-wet bottomland and dry slopes; a few small creeks with running water. Variable exposure. 0-45 degrees of slope with southern and eastern aspects. | Wild material | Plants between 40 and 65 feet in height and 6 to 17 inches DBH. | 1798766 | Ames 29974 |
| 47 | Ames 29975 | JDC/GD/2009/004/154 | Gymnocladus dioicus (L.) K. Koch | Nebraska, United States | NC7 |  | | 2009 | COLLECTED | 03/20/2009 | Ponca State Park, approximately 2 miles north of Ponca, T30N R6E Sec. 3 Ponca Quad., Dixon County. | 42.60166667, -96.71444444 | 365 | Variable from mid-level elevation sloped area to bottomland type. Variable exposure. 0-60 degrees of slope with variable aspects. | Wild material | Plants between 40 and 75 feet in height and 8 to 26 inches DBH. | 1798767 | Ames 29975 |
| 48 | W6 30719 | PRC-06-IN/116-383 | Agropyron cristatum (L.) Gaertn. | Nei Mongol Zizhiqu, China | W6 |  | | 2007 | COLLECTED | 08/28/2006 | 43 km southwest of Jingpeng Town, Keshiketeng County | 43.06222222, 117.05888889 | 1304 | On sand dunes in hilly shrubby-steppe | Wild material | Hunshake Sand Land, spike long and broad | 1722554 | W6 30719 |
| 49 | Ames 27313 | 22 | Staphylea trifolia L. | Iowa, United States | NC7 |  | | 2003 | COLLECTED | 09/15/2003 | Backbone State Park Cave near Strawberry Point, T90N, R6W NE corner of NW 1/4 of SW 1/4 of Sec. 4, Delaware County | 42.63694444, -91.56194444 | 317 | Alluvium below limestone cave. Nearly full shade. Slight slope w/ SE aspect. Loam soil w/ some stoniness, good drainage | Wild material | Medium to large shrubs. Heavy fruit production. | 1649470 | Ames 27313 |
| 50 | NA 64581 | BJG071 | Tilia mongolica Maxim. | Beijing Shi, China | NA | | | 1994 | COLLECTED | 09/18/1994 | Da Zhuang Ke (Old Village) Song Shan Forest Preserve, Yanqing County, PRC. | 40.53722222, 115.78805556 | 1200 | Growing between boulders above a seasonally active stream on a western slope in the valley; in association with Ulmus macrocarpa, Spiraea trilobata, Deutzia scabra, Philadelphus grandiflora, Prunus armeniaca and Schisandra chinensis. | Wild material | | 1511120 | NA 64581 |
| 51 | NA 64586 | BJG076 | Deutzia parviflora Bunge | Beijing Shi, China | NA | | | 1994 | COLLECTED | 09/19/1994 | Tang Zhi Gou (Hot Spring Valley), Song Shan Forest Preserve, Beijing Municipality, PRC. | 40.53361111, 115.82194444 | 1280 | Growing in part to full shade in woodland on N-facing dry slope; growing under Pinus tabulaeformis; in association with Lezpedeza bicolor, Acer truncatum, Syringa pekinensis, Populus davidiana, Ulmus macrocarpa and Corylus heterophylla. | Wild material | | 1511086 | NA 64586 |