| 0 | NA 89113 | TLM25-01 | Zanthoxylum clava-herculis L. | Texas, United States | NA | | | 2025 | COLLECTED | 07/08/2025 | Packery Channel Oak Motte Sanctuary on Padre Island. Plants were growing on the dune edge of the Sanctuary at the intersection of Villa Maria Isabel Avenue and Sand Dollar Avenue. | 27.62564900, -97.21972000 | 3 | Plants are growing in part shade to full sun, deep sandy, and dry conditions. Plants are sheltered from direct impact of winds and surf by the dunes where they reside. The dunes appear relatively stable with a dense "motte" of Quercus fusiformis and other plants species, all of which appear to quite mature. Soils: The soils of this site are classified as Galveston and Mustang fine sands, occasionally flooded (Gm). The Galveston Series (~50%) consists of very deep, somewhat excessively drained, high saturated hydraulic conductivity (rapidly permeable soils) that formed in sandy eolian deposits derived from igneous, metamorphic and sedimentary rock. These nearly level to strongly sloping soils occur on back-barrier flats on barrier islands. Slope ranges from 0 to 3 percent. The soils are occasionally flooded with salt water during severe storms. The Mustang Series (~30%) consists of very deep, poorly drained, very slowly permeable soils that formed in sandy eolian and storm washover sediments. These nearly level soils are on planar to concave barrier island flats. These soils are subject to occasional flooding by high storm surge from strong tropical storms and are ponded after periods of heavy rainfall. Slope ranges from 0 to 1 percent. Galveston and Mustang fine sands range from slightly alkaline to moderately alkaline. (Source: California Soil Resource Lab/NRCS Official Soil Series Descriptions). Geology: The underlying geology of this area is characterized as Barrier Ridge and Barrier Flat Deposits of Quaternary, Holocene origin. It is comprised of sand, silt, and clay; mostly sand, well sorted, and fine grained with abundant shells and shell fragments. Interfingers have silt and clay in landward direction; includes beach ridge, spit, tidal channel, tidal flats, washover fian, and sand dune deposits. (Source: USGS Texas Geologic Map Data). Slope: 1 to 5 percent. Aspect: west to northwest. | Wild material | | 2191652 | NA 89113 |
| 1 | NA 89114 | TLM25-03 | Zanthoxylum clava-herculis L. | Texas, United States | NA | | | 2025 | COLLECTED | 07/09/2025 | Jackson County Road 113, Bergston Road, approximately 2.1 kilometers north of the junction with Jackson County Road 234; growing on the west side of the road along a fenceline running parallel to the road. | 29.00576600, -96.76298500 | 24 | Plants are growing in full sun to light shade along a fence line near where cattle graze and the dirt road. The area is disturbed, but somewhat overgrown since there is very little traffic on the road that is primarily used by farmers and ranchers to access their fields. Slope: 0 to 1 percent. Aspect: N/A. Soils: The soils of this area sampled are classified as Laewest clay, 0 to 1 percent slopes (LaA). The Laewest Series consists of very deep, moderately well drained soils that formed in clayey flood basin deposits on alluvial plains or deltas of the Beaumont Formation of Pleistocene Age. These nearly level to gently sloping soils are on broad flat coastal plains. Slope ranges from 0 to 8 percent. The solum thickness is more than 200 cm and ranges from slightly acidic on the surface to neutral in deeper pedons. This is a cyclic soil and undisturbed areas have gilgai microrelief with microhighs 15 to 30 cm higher than microlows. Distance from the center of the microhighs to the center of the microlows ranges from about 1.2 to 4.9 m. The microhigh makes up about 20 percent, the intermediate, or area between the knoll and depression about 50 percent, and the microlow about 30 percent. The amplitude of waviness between mollic colored materials in the upper part of the solum and the higher value colors in the lower part ranges from about 30 to 150 cm. When dry, the soil has cracks 1 to 5 cm wide at the surface and commonly 1 cm wide cracks extend to a depth of 1.2 m during the summer. The cracks remain open for less than 90 cumulative days in most years. Some pedons have an overwash of calcareous clay or silty clay 20 to 51 cm thick. (Source: California Soil Resource Lab/NRCS Official Soil Series Descriptions). Geology: The underlying geology of this area is Lizzie Formation of Quaternary, Middle Pleistocene age. It is comprised of sand, silt, clay, and minor amount of gravel. Iron oxide and iron-manganese nodules are common in zones of weathering; locally calcareous. Surface is fairly flat and featureless except for many shallow depressions and pimple mounds. Moore and Wermund (1993a) mapped three units--(1) alluvium undifferentiated as to texture and origin--includes meander belt, levee, crevasse splay, and distributary sand, and flood-basin mud deposits, about 60 m thick, (2) fine-grained channel facies (alluvial sand, silt, and clay) about 10-25 m thick, thicker seaward, and (3) fine-grained overbank facies (alluvial silt and clay) about 55-65 m thick, thicker seaward. Together, these deposits form a deltaic plain that parallels the Gulf Coast. Unit contains Pleistocene vertebrate fauna, dips seaward beneath the Beaumont Fm. and disconformably overlies deposits of the Pliocene and early Pleistocene Willis Formation. The deltaic plain is entrenched as much as 7 m by streams. In Hidalgo County (southernmost part of Texas) the unit underlies a semiarid plain, widely irrigated and cultivated. Unit is locally veneered with thin, discontinuous stabilized eolian sand. (Source: USGS Texas Geologic Map Data). | Wild material | | 2191653 | NA 89114 |
| 2 | WLP 2304 | LBJWC-MM-755 | Zanthoxylum hirsutum Buckley | Texas, United States | NA | | | 2006 | COLLECTED | 07/19/2006 | Stevenson Nature Preserve. | 30.03711000, -97.82372000 | 245 | Arid; brown, sandy clay loam soil over Cretaceous limestone. | Wild material | | 1719704 | WLP 2304 |
| 3 | Ames 38800 | Camp Mitigwa | Amelanchier arborea (F. Michx.) Fernald | Iowa, United States | NC7 |  | | 2026 | COLLECTED | 06/01/2026 | Mitigwa Scout Camp located on west side of Des Moines River watershed approximately 7.50 miles south, southwest of Boone, T82N R26W N 1/4 Sec. 5 and T83N R26W S 1/4 Sec. 32. | 41.94894500, -93.90537200 | 310 | High-quality white oak - ironwood, mature woods. | Wild material | The native range of Amelanchier arborea is concentrated in the eastern half of the U.S. (Little, 1977). This accession represents a collection of A. arborea germplasm from the western edge of the species native range, specifically central Iowa. Specimens sampled at the collection site in nature were small to medium understory or woodland edge single and/or multi-trunked trees with a few trees getting close to being deemed as canopy specimens. Bark smooth and light grey in color. Specimens sampled in nature ranging 15-50' in height. Peak flowering occurred on 8 April 2026 with white flowers appearing prior to leaf expansion. Fall colors ranging from orange to orange-red peaking typically at the end of September (central Iowa). Fruits, dark-pink to red, maturing in early June (peak in 2026 occurred on 2 June) averaging 8 mm in diameter, except for mother tree #6 that had rather large fruits at 11 mm in diameter. | 2197049 | Ames 38800 |
| 4 | NA 89115 | TLM25-04a | Hamamelis ovalis S. W. Leonard | Texas, United States | NA | | | 2025 | COLLECTED | 07/10/2025 | State Highway 87 approximately 3.25 kilometers north of the crossroad junction with Texas Recreational Road 255 (RE 255); plants were growing in the narrow buffer woods along the east side of the highway. | 31.12051300, -93.72628100 | 138 | The habitat is an upland mixed coniferous and deciduous woodlands in part to full shade and dry conditions, often under drought stress. Plants seem to always occur on the top of dry ridges or well-drained slopes. Slope: 0 to 1 percent. Aspect: N/A. Soils: The soils of this collection area are classified as Tehran-Letney Association, hilly (TLE) soils. The Tehran Series (55%) consists of deep, somewhat excessively drained, moderately rapidly permeable soils on uplands. They formed in thick loamy and sandy sediments on the Western Coastal Plain. These soils are on gently sloping to moderately steep uplands with slopes ranging from 1 to 20 percent. The Letney Series (30%) consists of deep, well drained, moderately rapidly permeable, upland soils. They formed in thick sandy and loamy sediments of the coastal plains. These soils are on gently sloping to moderately steep uplands with slopes ranging from 1 to 20 percent. Soil pH ranges from 4.5 to 6.0. The minor soil components include Doucette Series (10%) and Boykin Series (5%) soils. (Source: California Soil Resource Lab/NRCS Official Soil Series Descriptions). Geology: The underlying geology of this area is of Oligocene origin and characterized as Catahoula Formation. This formation is extensive and deep in Texas, up to 185 meters thick. In the area of the collection the Catahoula Formation is primarily mudstone and sand. The upper 90-150 meters is mudstone that is tuffaceous, and sandy; also, occasionally, with some bentonitic clay. (Source: USGS Texas Geologic Map Data). | Wild material | | 2191654 | NA 89115 |
| 5 | Ames 36327 | Lick Creek Unit | Amelanchier arborea (F. Michx.) Fernald | Iowa, United States | NC7 |  | | 2025 | COLLECTED | 06/10/2025 | Shimek State Forest Lick Creek Unit just east of Farmington, T67N R7W NE ¼ Sec. 8 and Sec. 7 and also T68N R8W Sec. 25. | 40.62024500, -91.70427700 | 214 | Woodland edges. | Wild material | The native range of Amelanchier arborea is concentrated in the eastern half of the U.S. (Little, 1977). This accession represents a collection of A. arborea germplasm from the western region of the species native range, specifically the extreme southeastern corner of Iowa. Specimens sampled in nature ranging 15-35' in height. Typically smoothish bark, light grey in color. Peak flowering (white flowers) occuring usually in early April with orange, orange-red fall colors peaking typically end of September (southeastern Iowa). | 2191464 | Ames 36327 |
| 6 | NA 88809 | TJK2023LA/TX-009 | Ilex decidua Walter | Texas, United States | NA | | | 2023 | COLLECTED | 11/27/2023 | Southbound Highway 281, west side of road, approximately 13 miles south of Highway 290 and 1 mile north of RR [rural route] 473 East. | 30.01610000, -98.40610000 | 407 | Roadside, brushy fencerow. Slope: 10%. Aspect: East-northeast. Elevation: 1336 feet. | Wild material | | 2159192 | NA 88809 |
| 7 | 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 |
| 8 | 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 |
| 9 | Ames 35615 | Ames 35615 | Aronia arbutifolia (L.) Pers. | Michigan, United States | NC7 |  | | 2020 | COLLECTED | 11/03/2020 | Warren Townsend Park located just northeast of Cannonsburg southwest of Ramsdell Dr. and Six Mile Rd. intersection, T8N R10W NE ¼ NW ¼ Sec. 26, Cannon Twp., Kent County | 43.05606700, -85.46435100 | 239 | Shrubby edge of old stream (Bear Creek) oxbow, adjacent to wet meadow with groundwater upwelling. Muck soils. | Wild material | Plants in nature measuring approximately six meters in height; elongate shrubs mostly unbranched; bright-red fruits measuring between 4-7 mm in diameter; tomentose leaves underneath; scarlet fall color. This collection was discovered in 2011 and represents the first report of the species for the state of Michigan (Ryskamp and Warners 2012) and thus represents a widely disjunct population where the next nearest documented population is in southern Ohio (Clermont County). | 2110277 | Ames 35615 |
| 10 | Ames 35242 | APS/EA/2019/046/375 | Euonymus atropurpureus Jacq. | Missouri, United States | NC7 |  | | 2019 | COLLECTED | 11/02/2019 | Mule Shoe Conservation Area along CR 66 approximately 7.5 miles east of Cross Timbers. | 38.01203000, -93.09312000 | 265 | Roadside, deciduous forest. | Wild material | | 2097787 | Ames 35242 |
| 11 | Ames 35234 | JDC/AS/2019/041/920 | Agastache scrophulariifolia (Willd.) Kuntze | Minnesota, United States | NC7 |  | | 2019 | COLLECTED | 10/24/2019 | Private property approximately 4.94 miles south, southwest of Cannon Falls, T111N R18W NW1/4 Sec. 13, Goodhue County | 44.42498900, -92.93729200 | 346 | Woodland edges, slightly disturbed. | Wild material | Plants measuring approximately 5-6' in height with 4-5" spikes pale pink in color. Stems and petioles tomentose. Peak flowering occurred circa 1 September 2019 and fruiting circa 1 October 2019 in nature. | 2097770 | Ames 35234 |
| 12 | Ames 34052 | PB1701 | Betula papyrifera Marshall | Minnesota, United States | NC7 |  | | 2017 | COLLECTED | 09/16/2017 | Detroit Mountain area just east of Detroit Lakes approximately 2.9 miles, T139N R40W SW 1/4 NE 1/4 and NE 1/4 NE 1/4 NW 1/4 Sec. 21, Becker County | 46.81210900, -95.78208300 | 457 | Mixed deciduous woods. | Wild material | | 1954341 | Ames 34052 |
| 13 | Ames 34023 | Ames 34023 | Viburnum prunifolium L. | Iowa, United States | NC7 |  | | 2017 | COLLECTED | 09/27/2017 | Shimek State Forest, Donnellson Unit, approximately 6.0 miles west of Donnellson. | 40.64796000, -91.67764000 | 219 | Oak-hickory upland forest. | Wild material | Plants at collection site ranging between 10-15' tall. Fruits dark purple, leaves on some stems were turning red fall color at time of collection (09/27/2017). | 1953995 | Ames 34023 |
| 14 | 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 |
| 15 | 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 |
| 16 | Ames 33752 | Ames 33752 | Maclura pomifera (Raf.) C. K. Schneid. | Iowa, United States | NC7 |  | | 2016 | COLLECTED | 10/05/2016 | Deer Creek watershed, T80N R23W E1/2 Sec. 18. | 41.73813000, -93.56296400 | 295 | Mixed deciduous woods, distrubed areas and also managed areas. Gentle slopes and wetlands | Uncertain improvement status | The native range for Osage-orange is reported from eastern Texas, southeastern Oklahoma, southwestern Arkansas, and the northwestern corner of Louisiana (Little, 1971). Historically and presently known for its extreme value as bow-wood and fence posts, Osage-orange represents one of the most widely planted tree species in the lower 48 US states as a living fence starting in the mid-1800's, in the late 1900's as a landscape tree for difficult sites, and most recently its chemical properties. Detailed history of Osage-orange and it's economic uses are well documented (Smith and Perino, 1981 and J. T. Winberry 1979). Osage wood is highly-prized for its use as fence posts (both living and non-living) and durable wood for wood working. Osage is an extremely drought and heat tolerant tree and is recommended for use in USDA cold-hardiness zones 5b or warmer. Although the species is commonly known for its stout thorns and large, globular fruits, the species is dioecious and the degree of thorns on individual genotypes can be extremely variable. This accession represents germplasm from a naturalizing, reproductive population collected in central Iowa (Polk County). Majority of specimens averaged approximately 40-50’ in height with multiple (e.g. 4-5) trunks. Specimens 03-1 and 03-2 were upright in form with tighter branch angles, while 03-10 was the widest spreading of all trees. Some yellow fall color (yellow) was apparent at time of fruit collection (10/05/2016). Size of fruits ranged from 9.00 to 10.75 inches circumference except for tree 03-5 with fruits averaging 7.33 inches circumference. | 1942949 | Ames 33752 |
| 17 | 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 |
| 18 | Ames 33291 | APS/GD/2016/015/250 | Gymnocladus dioicus (L.) K. Koch | Michigan, United States | NC7 |  | | 2016 | COLLECTED | 04/07/2016 | Shiawassee County: T6N R4E SE 1/4 SE 1/4 SW 1/4 Sec. 30; T5N R4E SE 1/4 NW 1/4 Sec. 7; and T6N R3E SE 1/4 SE 1/4 NE 1/4 Sec. 25 along Shiawassee River both northeast (approximately 1.35 miles) and southeast (approximately 2.63 miles) of Bancroft. | 42.87985700, -84.03461800 | 244 | Floodplain. | Wild material | | 1940348 | Ames 33291 |
| 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 | NA 82648 | NA 82648 | Viburnum acerifolium L. | Texas, United States | NA | | | 2015 | COLLECTED | 08/31/2013 | West side of the road along Texas Route 87 north of Burkeville, Texas. | 31.11950000, -93.72656000 | 141 | Dry, acidic woodlands in full shade beneath trees; soils sandy loam and are very loose and drought prone. | Wild material | | 1953129 | NA 82648 |
| 22 | Ames 32827 | JDC/SA/2014/147/650 | Spiraea alba Du Roi | Iowa, United States | NC7 |  | | 2014 | COLLECTED | 11/04/2014 | Marietta Sand Prairie State Preserve located approximately 7.5 miles northwest of Marshalltown, T84N R19W NW 1/4 SE 1/4 NW 1/4 SW 1/4 Sec. 11. | 42.09710000, -93.03720000 | 308 | Virgin, remnant diverse prairie. Both extremely sandy and wet habitats. Colo-Ely complex (0-5 percent slopes) depth to water table: 0-12 inches, 0-11 inches: silty clay loam, poorly drained; and Sparta loamy fine sand (5-9 percent slopes) depth to water table: more than 80 inches, 0-8 inches: loamy fine sand, excessively drained | Wild material | | 1921787 | Ames 32827 |
| 23 | 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 |
| 24 | 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 |
| 25 | W6 42885 | MSB210513 | Pluchea odorata (L.) Cass. | Texas, United States | W6 |  | | 2011 | | | | | | | Wild material | | 1895343 | W6 42885 |
| 26 | Ames 27962 | Quercus Wilderness Area | Amelanchier arborea (F. Michx.) Fernald | Iowa, United States | NC7 |  | | 2003 | COLLECTED | 05/26/2003 | Quercus Wilderness Area located 6.75 miles south, southwest of Oskaloosa, T74N R16W SE ¼ NE ¼ of Sec. 23. | 41.19888889, -92.66111111 | 244 | Mature woods on very sandy soils. Typically restricted to east, west or south facing slopes at either summits or mid-slopes. | Wild material | The native range of Amelanchier arborea is concentrated in the eastern half of the U.S. (Little, 1977). This accession represents a collection of A. arborea germplasm from the western edge of the species native range, specifically the southern portion of Iowa. As of 2025, the top ten largest specimens in the state of Iowa are located at Quercus Wilderness where this accession was collected. Iowa’s largest specimen of A. arborea specimen at Quercus Wilderness was measured at 14.17" DBH, 51.83’ in height, and 27.00’ average crown spread for a total of 102.955 points (Rouw, M., personal communication, 12 December 2023). Fall color (orange-red) tends to peak in the middle of September (Iowa) with peak fruiting occurring in early May. Bark smooth, grey. | 1700483 | Ames 27962 |