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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
|---|
| 0 | PI 649661 | 23 | Diervilla lonicera Mill. | Iowa, United States | NC7 |  | | 2003 | COLLECTED | 09/15/2003 | Steamboat Rock County Park just southwest of Steamboat Rock, Steamboat Rock Quad. T88N R19W N edge of SE 1/4 SW 1/4 Sec. 28 | 42.40138889, -93.07305556 | 299 | Eroding sandstone cliff. Mostly shaded area with 50% slope with a northern aspect. Sand and organic matter just above sandstone rock cliff, well drained. | Wild material | | 1649456 | PI 649661 |
| 1 | Ames 33736 | JDC/BA/2016/028/743 | Betula alleghaniensis Britton | Iowa, United States | NC7 |  | | 2016 | COLLECTED | 09/02/2016 | Fallen Rock State Preserve approximately 1.9 miles southwest of Steamboat Rock, T88N R19W NW ¼ Sec. 32. | 42.39459000, -93.09423600 | 310 | High-quality, native, mesic deciduous woods on loose, loamy sandstone amongst very large boulders. North-facing with variable 10-50 degree slopes. Majority of specimens located at base of bluff or near water’s edge (Iowa River). | Wild material | The native range of Betula alleghaniensis is concentrated in the northeastern U.S. with disjunct populations in Iowa (Little, 1971). This accession represents a collection of Betula alleghaniensis germplasm from the extreme western edge of the species native range. The next closest occurrence is in Mitchell County, Iowa (60 miles). As of 2025, two trees at Fallen Rock State Preserve currently represent the state of Iowa's 1st and 2nd largest yellow birch specimens measuring 22.76" DBH; 70.83' height; 40' average crow spread (151.83 points) and 17.18" DBH; 65.33' height; 33.75' average crow spread (127.76 points), respectively (Rouw, M., personal communication, 13 May 2018). | 1942689 | Ames 33736 |
| 2 | Ames 29506 | JDC-CA-2008-003 | Cornus alternifolia L. f. | Iowa, United States | NC7 |  | | 2008 | COLLECTED | 07/20/2008 | Tower Rock Park, N edge of SE 1/4 of SW 1/4 of Section 28, T88N, R19W, Steamboat Roak Quad, Steamboat Rock, Hardin County. | 42.40111111, -93.07166667 | 292 | Eroding (burnt orange) sandstone cliff, south side of Iowa River; mostly shaded; near base of slope with northern aspect; sand and organic matter above cliff; well drained. | Wild material | | 1782028 | Ames 29506 |