| 0 | Ames 34431 | JDC/SC/2019/001/880 | Salix candida Flüggé ex Willd. | Iowa, United States | NC7 |  | | 2019 | COLLECTED | 05/17/2019 | Private property approximately 2.2 miles southwest of Oelwein, T91N R9W SW 1/4 SE 1/4 Sec. 30, Fayette County | 42.65929300, -91.94916200 | 311 | High-qulity fen, remnant. | Wild material | Plants at collection site in nature averaging 2.0-2.5' in height with minimal branching. Pubescent stems mostly near apical ends. Most plants estimated at 25 ramets per genet. Estimated number of ramets per genet is difficult to separate/distinguish. This petite, shrubby willow is essentially restricted to cold bogs/fen communities and is rare in Iowa (Nekola 1990). It is easily recognized by its narrowly and extremely pubescent leaves. Salix candida was considered extirpated from Iowa by Spence (1959) and Roosa and Eilers (1978). Since discovery of eastern Iowa fen communities in 1984 it has been observed extant at 26 sites (Nekola 1988) and is tracked as a species of special concern by the Iowa Department of Natural Resources Natural Areas Inventory (2021). | 2091747 | Ames 34431 |
| 1 | Ames 34432 | JDC/SC/2019/002/881 | Salix candida Flüggé ex Willd. | Iowa, United States | NC7 |  | | 2019 | COLLECTED | 05/17/2019 | Kauten Fen located 12.4 miles south of West Union, T92N R8W NE 1/4 SW 1/4 NE 1/4 Sec.16, Fayette County | 42.78232200, -91.78865600 | 351 | High-qulity fen, remnant. | Wild material | Plants averaging 2.0' in height with little to no branching (e.g. estimated 1-3 ramets per genet which are difficult to separate/distinguish due to the clonal nature of the species). Pubescent stems mostly near apical ends. This petite, shrubby willow is essentially restricted to cold bogs/fen communities and is rare in Iowa (Nekola 1990). It is easily recognized by its narrowly and extremely pubescent leaves. Salix candida was considered extirpated from Iowa by Spence (1959) and Roosa and Eilers (1978). Since discovery of eastern Iowa fen communities in 1984 it has been observed extant at 26 sites (Nekola 1988) and is tracked as a species of special concern by the Iowa Department of Natural Resources Natural Areas Inventory (2021). | 2091748 | Ames 34432 |
| 2 | Ames 32956 | JDC/BX/2015/043/700 | Betula ×sandbergii Britton | Iowa, United States | NC7 | | Not Available | 2015 | COLLECTED | 09/04/2015 | Private property approximately 2.5 miles south, southeast of Lawler. T95N R11W NW 1/4 NE 1/4 NE 1/4 Sec. 22 Chickasaw County. | 43.03607800, -92.12583700 | 347 | Dry, peaty soil. Growing in Palms muck soils in association amongst an extremely dense thicket of Ambrosia trifida and Urtica gracilis. | Wild material | Betula x sandbergii = B. pumila x B. papyrifera. All B. x sandbergii specimens noted were approximately 30-40' in height with golden-brownish peeling bark. Largest diameter specimen measured 5 9/10" d.b.h. Fruiting heavily. Female catkins mostly all brown and actively dispersing seeds at time of harvest. Prior reports indicated this area to be "one of the best fens on the Iowan Surface - numerous rare species noted with approximately 500+plants of B. pumila in the northern part of the fen (Leoschke 1987); "mounded spring fen dominated by B. pumila" (Horton 1987); "2000+ ramets, dominant throughout most of the fen" (Leoschke 1989); and "dominant shrub in cold, peaty fen" (Nekola 1990). According to the USDA-NRCS Web Soil Survey the area is largely Palms muck soils. Likely sometime after 1990, changes in hydrology resulted in a drastic reduction of available soil moisture and loss of many plant taxa. As of 2015, only three specimens of B. pumila were noted. | 1927398 | Ames 32956 |
| 3 | Ames 32957 | JDC/BP/2015/044/701 | Betula pumila L. | Iowa, United States | NC7 |  | | 2015 | COLLECTED | 09/04/2015 | Private property approximately 1.5 miles northwest of Lawler. T96N R11W SW 1/4 SW 1/4 Sec. 32 Chickasaw County. | 43.08335400, -92.17787800 | 349 | High-quality remnant wetland/fen. Growing in Plams muck soils in association with Salix spp., Cornus racemosa, Oncolea sensibilis, Spiraea alba, Gentiana spp., Carex spp., Populus tremuloides, and Ambrosia trifida. Noted four specimens likely B. x sandbergii that were approximately 30-35' in height. | Wild material | B. pumila could be considered a dominant species in portions of this site. Female catkins were both green and brown at time of harvest. Specimens average approximately 275 cm in height. Little to no fall color. Approximately 75% of leaves were already dropped. | 1927399 | Ames 32957 |