FRAXINUS

Listing of Omernik Level III Ecoregion where germplasm was obtained. Ecoregions determined using Omernik, J.M., 1987, Ecoregions of the conterminous United States (map supplement): Annals of the Association of American Geographers, v. 77, no. 1, p. 118-125, scale 1:7,500,000.

Listing of USDA Cold Hardiness Zone where germplasm was obtained. Cold Hardiness Zones determined using the USDA Plant Hardiness Zone Map, 2012. Agricultural Research Service, U.S. Department of Agriculture.

Observational data collected from woody ornamentals growing at the North Central Regional Plant Introduction Station in Ames, Iowa throughout 2009.

Observational data collected from ornamentals growing at the North Central Regional Plant Introduction Station in Ames, Iowa throughout 2011.

Ploidy level determined through Woody Landscape Plant Germplasm Repository (Richard Olsen).

Seed length and width measurements obtained using Tomato Analyzer 3.0 (Department of Horticulture and Crop Science, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691) with Silver Fast 6.0 (Plustek OpticPro A320) set at 300 DPI. Random sample of 20 intact seeds. Measurements in millimeters.