| 0 | PI 656839 | 1 | Prunella vulgaris L. | Iowa, United States | NC7 | | | 2006 | COLLECTED | 09/19/2006 | 200 yards southwest of Whitetail parking lot, Don Williams County Park, near western border of park, SE 1/4 of NW 1/4 of SW 1/4 of Section 5, T84N, R27W, Yell Township, Boone County. | 42.11166667, -94.02388889 | 313 | Native prairie remnant. Afternoon sun. Moist-west mesic soil. | Wild material | Plants up to 18 inches tall. | 1712923 | PI 656839 |
| 1 | PI 633658 | 035 | Echinacea pallida (Nutt.) Nutt. | Arkansas, United States | NC7 |  | | 1997 | COLLECTED | 08/17/1997 | Near Harrison, Boone County. Please contact curator for specific site location. | 36.23333333, -93.13333333 | 430 | Osage tallgrass prairie remnant. Full exposure with a gentle slope and an eastern aspect. Cherty, well drained soil. | Wild material | Plants were up to ~2 feet tall, relatively abundant, and seldom branched with light pink flowers. | 1547347 | PI 633658 |
| 2 | Ames 36698 | Smith Cemetery NP | Echinacea simulata McGregor | Indiana, United States | NC7 |  | | 2025 | COLLECTED | 08/25/2025 | Smith Cemetery Nature Preserve located approximately 2.0 miles southwest of Perrysville on the southwest corner of SR 63 and a private lane, T18N R9W NE 1/4 NE 1/4 NE 1/4 Sec. 8. | 40.02625000, -87.45092000 | 167 | Prairie remnant (cemetery). | Wild material | Specimens at collection site in nature with drooping, pink to rose colored rays measuring 3.0-5.2 mm in width and 30.00-41.00 mm in length with bright yellow pollen. Plants measuring approximately 30" (762 mm) in height. Note: seed heads during threshing were extremely difficult to work with in order to extract seeds. | 2192821 | Ames 36698 |
| 3 | W6 62529 | FWS0300-132 | Symphyotrichum oolentangiense (Riddell) G. L. Nesom | Michigan, United States | W6 |  | | 2025 | | | | | | | Wild material | | 2192227 | W6 62529 |
| 4 | OPGC 8857 | Marietta Sand Prairie | Verbena stricta Vent. | Iowa, United States | OPGC | | | 2024 | COLLECTED | 09/04/2024 | Marietta Sand Prairie State Preserve located 7.5 miles northwest of Marshalltown on Knapp Avenue, T84N R19W SW ¼ Sec. 11. | 42.09711200, -93.03873400 | 297 | Remnant sand prairie. | Wild material | | 2170474 | OPGC 8857 |
| 5 | Ames 36256 | Plymouth County | Astragalus crassicarpus Nutt. | Iowa, United States | NC7 |  | | 2024 | COLLECTED | 07/10/2024 | Private property located approximately 4.95 miles southeast of Westfield along North Ridge Road T91N R48W SE 1/4 Sec. 8 (site #1) and also T91N R48W SW 1/4 NW 1/4 Sec 16 (site #2). | 42.70896900, -96.53007200 | 434 | Prairie remnant. | Wild material | | 2168687 | Ames 36256 |
| 6 | OPGC 8827 | CBG- 10825 | Physostegia virginiana (L.) Benth. | Illinois, United States | OPGC | | | 2023 | | | | | | | Wild material | | 2142279 | OPGC 8827 |
| 7 | Ames 36027 | Marietta Sand Prairie | Salix petiolaris Sm. | Iowa, United States | NC7 |  | | 2023 | COLLECTED | 03/15/2023 | Marietta Sand Prairie State Preserve approximately 7.5 miles northwest of Marshalltown on east side of Knapp Avenue, T84N R19W W 1/2 Sec. 11. | 42.09951000, -93.03668800 | 299 | Remnant sand prairie in areas with likely high water table. | Wild material | Slender-leaved willow, Salix petiolaris, is a somewhat dense suckering shrub that can reach up to 10' in height with slender stems that branch minimally, but typically maintains a height of 5-8'. Native to North America, the native range covers mostly the northeastern US stretching from Maine to western North Dakota and Canada south to central Iowa (Little, E. L. Jr. 1977). Salix petiolaris typically dominates wetland areas including sedge meadows, marshes, riverbanks, and lake shores. Despite favoring wet habitats, it can also be found in dry, upland areas, especially those with high-water tables. However, longevity is generally limited in upland habitats. S. petiolaris, similar to other willow species, responds well to fire, coppicing, or heavy browsing (highly favored by deer) by sprouting new stems close to the crown. In cultivation, plants after five years will encompass a 5' x 5' area due to stems that arch from the main base of the plant. Coppicing of plants to ground level is highly recommended either annually or once every 3-5 years to maintain vigorous growth and plant health. This species requires substantial to full sun exposure and is an excellent choice for streambank stabilizations and windbreaks to reduce soil erosion and drifting snow, respectively. This accession represents genetics from central Iowa and thus the southwestern edge of the species native range. Plants sampled in nature measuring at most 5' in height. Clump-type growth habit with minimal branching, but dense suckering (e.g. 50+ ramets per genet - typically encompassing 5' x 5' area) with winter stem colors ranging from red, orange-red, yellow, dark-green, green-brown, and yellow-green. Stems glabrous. Dormant buds occassionally black, but often reddish. | 2141651 | Ames 36027 |
| 8 | Ames 35906 | Turkey Mounds State Preserve | Heuchera richardsonii R. Br. | Iowa, United States | NC7 | | | 2022 | COLLECTED | 07/30/2022 | Turkey River Mounds State Preserve located 5.50 miles south, southeast of Guttenberg, T91N R2W SE ¼ NE ¼ Sec. 11. | 42.71399000, -91.03844000 | 228 | Narrow ridge with precipitous bluffs rising 250 feet above the Mississippi River floodplain | Wild material | | 2139635 | Ames 35906 |
| 9 | OPGC 7587 | Marietta Sand Prairie | Packera plattensis (Nutt.) W. A. Weber & Á. Löve | Iowa, United States | OPGC |  | | 2022 | COLLECTED | 06/03/2022 | Marietta Sand Prairie State Preserve located 12.0 km northwest of Marshalltown and 10.0 km north of Highway 30 on Knapp Avenue, T84N R19W W ½ Sec. 11. | 42.09835700, -93.03457900 | 299 | Remnant sand prairie. | Wild material | Plants in nature are approximately one to two feet in height. Peak flower and fruiting in 2022 occurred on 26 May and 3 June, respectively. | 2138177 | OPGC 7587 |
| 10 | OPGC 8309 | CBG-10450 | Heuchera richardsonii R. Br. | Wisconsin, United States | OPGC | | | 2021 | | | | | | | Wild material | | 2120089 | OPGC 8309 |
| 11 | W6 59085 | CBG-9702 | Valeriana edulis Nutt. ex Torr. & A. Gray | Wisconsin, United States | W6 | | | 2021 | | | | | | | Wild material | habit - forb | 2120015 | W6 59085 |
| 12 | Ames 35722 | DALCAN N-21-17 | Dalea candida Willd. | Iowa, United States | NC7 |  | | 2021 | COLLECTED | 10/03/2003 | Adjacent to Union Pacific Railroad, TNSHP 94, RNGE 44, E/W W, SECT 15, Quarter Section NW4SE4 | 42.95624000, -96.02896300 | 389 | Slight south slope, nearby land falls sharply 30-50 feet to old gravel quarry pond and the Floyd River, heavy black soil, farmer hays 1-2x/yr. | Wild material | Seeds were collected for conservations by the Tallgrass Prairie Center, Plant Materials Program, at the University of Northern Iowa, and germinated there from original collector's seed in March 2021. On July 2, 2021, 25 live seedlings were delivered in Ames, Iowa by Laura Fischer Walter and later transplanted into a field at the North Central Regional Plant Introduction Station for seed production. | 2116595 | Ames 35722 |
| 13 | OPGC 6462 | NM030-81 | Brickellia laciniata A. Gray | New Mexico, United States | OPGC | | | 2018 | | | | | | | Wild material | | 1958217 | OPGC 6462 |
| 14 | Ames 34154 | Ames 34154 | Monarda punctata L. | Wisconsin, United States | NC7 |  | | 2017 | COLLECTED | 12/15/2017 | Between Boscobel and Blue River along State Road 133 including T8N R3W Sec. 24, T8N R2W Sec. 17, and T8N R2W Sec. 11, Grant County. | 43.16997000, -90.63607800 | 205 | Roadside, sandy sparse vegetation. | Wild material | Average plant height at collection site in nature approximately 25-35 cm. | 1954954 | Ames 34154 |
| 15 | OPGC 5074 | JDC/PP/2017/017/771 | Phlox pilosa L. subsp. fulgida (Wherry) Wherry | Iowa, United States | OPGC | | | 2017 | COLLECTED | 06/23/2017 | Private property approximately 2.6 miles east, northeast of Polk City, T81N R24W NW ¼ SE ¼ Sec. 32. | 41.78088600, -93.66458200 | 300 | Native remnant, extremely high-quality hay prairie (circa 40 acres) with diverse soil types (classic swell and swale topography) with both pothole marsh and mesic prairie areas that has been in family name since mid 1800’s. Never been plowed. Extremely biologically diverse, seasonally wet prairie. Growing in association with Eryngium yuccafolium, Monarda fistulosa, Asclepias tuberosa (common), Asclepias sullivantii (rare), Asclepias syriaca, Asclepias incarnata, Zizia aurea, Coreopsis palmata, Baptisia bracteata (common), Thalictrum dasycarpum (common), Rosa sp., Carex haydenii, Carex sartwellii, Echinacea pallida, Lithospermum canescens, Cirsium pumilum var. hillii (circa 12 plants noted), Lilium philadelphicum (circa 12 plants noted), Polytaenia nuttallii (rare), Helianthus spp., Comandra umbelata, Silphium laciniatum (common), Iris virginica, Heliopsis helianthoides, Achillea millefolium, Cicuta maculata, Stachys palustris, Hesperostipa spartea, Liatris aspera, Liatris pycnostachya, Pedicularis lanceolata, Hyposix hirsuta, Arnoglossum atriplicifolium, and Ceanothus herbaceous. Species actively blooming on 25 May 2017 included: P. pilosa, C. herbaceous, Z. aurea, C. umbellata, and L. canescens. Species actively bloomin on 23 June 2017 included: A. tuberosa, A. syriaca, A. incarnata, C. palmata, C. maculata, L. philadelphicum, C. pumilum var. hillii, S. palustris, E. pallida, H. helianthoides, and A. millefolium. | Wild material | Flower color for population is all purple. | 1950049 | OPGC 5074 |
| 16 | OPGC 4241 | JDC/PP/2015/058/715 | Phlox pilosa L. subsp. fulgida (Wherry) Wherry | Iowa, United States | OPGC |  | | 2015 | COLLECTED | 07/20/2015 | T88N, R27W Sec. 28. Brushy Creek State Recreation Area, Webster County. | 42.41169000, -93.99375000 | 327 | High quality, biologically diverse prairie remnant. Slight northeast-facing slope. Associated with Amorpha canescens, Artemisia ludoviciana, Asclepias tuberosa, Baptisia leucophea, Lithospermum canescens, Astragalus americanus, Corylus americana, Echinacea pallida, Eryngium yuccifolium, Liatris pycnostachya, Potentilla arguta, Liatris aspera, Malus ioensis, Ceanothus americanus, Pycnanthemum virginianum, Silene stellata, Salix, Schizachyrium scoparium, Silphium laciniatum, Dalea purpurea, Dalea candida, Solidago rigida, and Solidago speciosa. | Wild material | | 1927165 | OPGC 4241 |