| 0 | OPGC 8638 | OR110-1094 | Solidago missouriensis Nutt. | Oregon, United States | OPGC |  | | 2022 | | | | | | | Wild material | elongate rhizomes, not resinous, basal and cauline leaves | 2138475 | OPGC 8638 |
| 1 | OPGC 7485 | CBG-9417 | Solidago missouriensis Nutt. | Iowa, United States | OPGC |  | | 2019 | | | | | | | Wild material | | 2092792 | OPGC 7485 |
| 2 | OPGC 7577 | Marietta Sand Praire | Solidago nemoralis Aiton | Iowa, United States | OPGC |  | | 2021 | COLLECTED | 10/06/2021 | Marietta Sand Prairie State Preserve located just northwest of Marshalltown, T84N R19W SW1/4 Sec. 11 | 42.09830600, -93.03374300 | 293 | Remnant sand prairie | Wild material | Plants in nature varied in height from approximately one to two feet, growing in tight clumps. Flower color was a fairly uniform light yellow, but peak flower timing varied among plants from late August to late September in 2021. | 2132831 | OPGC 7577 |
| 3 | OPGC 7578 | Marietta Sand Praire | Solidago rigida L. | Iowa, United States | OPGC |  | | 2021 | COLLECTED | 10/06/2021 | Marietta Sand Prairie State Preserve located just northwest of Marshalltown, T84N R19W NW1/4 Sec. 11 | 42.10422100, -93.03712300 | 282 | Remnant sand prairie | Wild material | Plants in nature varied in height from approximately three to five feet and had a muted orange/red fall foliage color at the end of October 2021. Peak bloom occurred during the week of August 30 in 2021. Plants were generally growing as fairly open clumps with minimal spreading. | 2132832 | OPGC 7578 |
| 4 | OPGC 7350 | NV030-1336 | Solidago spectabilis (D. C. Eaton) A. Gray | Nevada, United States | OPGC |  | | 2018 | | | | | | | Wild material | | 1970660 | OPGC 7350 |
| 5 | PI 699722 | OPGC 5069 | Rudbeckia missouriensis Engelm. ex C. L. Boynton & Beadle | Missouri, United States | OPGC | | | 2016 | COLLECTED | 10/16/2016 | Private property approximately 5 miles east, southeast of Eminence, T29N R3W SE 1/4 Sec. 33 | 37.13475800, -91.27128100 | 261 | Glade featuring Eminence Dolomite bedrock, outcropping. Shallow, dolomite with cherty residuum. Growing in association with Schizachryium scoparium, Sporobolus clandestinus, Sorghastrum nutans, Solidago radula, and Coreopsis lanceolata. | Wild material | | 1943160 | PI 699722 |
| 6 | PI 710505 | NV030-207 | Apocynum cannabinum L. | Nevada, United States | S9 |  | | 2009 | | | | | | | Wild material | | 1802239 | PI 710505 |
| 7 | 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 |
| 8 | Ames 36181 | Turtlehead Fen | Eutrochium maculatum (L.) E. E. Lamont | Iowa, United States | NC7 | | | 2023 | COLLECTED | 09/29/2023 | Turtlehead Fen (Chichaqua Bottoms Greenbelt) located 1.75 miles southeast of Farrar just north of highway 65, T81N R21W SW ¼ NW ¼ Sec. 31. | 41.78610000, -93.34730000 | 290 | Remnant fen with extremely wet, spongy soils and surface water visible at time of collection. | Wild material | Plants in nature ranged in height from three to eight feet. Variation was also noted for phenology with some plants mostly dispersed and some just ripening at the time of collection. | 2159013 | Ames 36181 |
| 9 | 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 |
| 10 | WLP 2705 | Eagle Creek | Crataegus wootoniana Eggl. | New Mexico, United States | NA |  | | 2022 | COLLECTED | 09/08/2022 | Eagle Creek, along Upper Eagle Creek Road (past gate to cabins) approximately 1.5 miles northwest of intersection with Ski Run Road. T10S R12E N 1/2 S 1/4 Sec. 35. | 33.40777700, -105.73980900 | 2422 | Canyon bottom above creek. | Wild material | Shrubs to approximately 15 feet in height with a tight clump forming growth habit and arching stems. | 2139678 | WLP 2705 |
| 11 | 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 |
| 12 | W6 59652 | UT020-94 | Leymus cinereus (Scribn. & Merr.) Á. Löve | Utah, United States | W6 | | | 2021 | | | | | | | Wild material | Perennial bunchgrass forming tall, sprawling clumps with numerous inflorescences. Plant height averaged 4.5 ft and plants appeared healthy, but many plants in this area produced few or no reproductive shoots this year. Plants were present in flat, open areas directly alongside Wildcat Creek, but also along dry drainage paths relatively far from the creek. Most of the plants we collected seed from were located on rather dry, sloped sites, with their lower leaf blades dried up at the time of collection. | 2120817 | W6 59652 |