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2018 Biological Resources Inventory Report <br /> Table 6: <br /> Vegetation Observed in the Project Area,July 6 and 7,2017 <br /> Common Name Scientific Name Notes <br /> Russian knapweed Acroptilon repens Listed noxious weed <br /> Field bindweed Convolvulus arvensis Listed noxious weed <br /> Horseweed Conyza canadensis Introduced herbaceous species <br /> Barnyard grass Echinochola crus-gali Introduced grass <br /> Russian olive Elaegnus angustifolia Listed noxious weed <br /> Slender wheatgrass Elymus trachycaulus Native herbaceous species <br /> Annual wheatgrass Eremopyrum triticeum Introduced grass <br /> Leafy spurge Euphorbia escula Listed noxious weed <br /> Broomweed Gutierrezia sarothrae Native shrub <br /> Hairy false goldeneaster Heterotheca villosa Native herbaceous species <br /> Foxtail barley Hordeum jubatum Native herbaceous species <br /> Baltic rush Juncus balticus Native herbaceous species <br /> Kochia Kochia scoparia Native herbaceous species <br /> Prickly lettuce Lactuca serriola Introduced herbaceous species <br /> Clasping pepperweed Lepedium perfoliatum Introduced herbaceous species <br /> Whitetop Lepidum draba Introduced herbaceous species <br /> White horehound Marrubium vulgare Introduced herbaceous species <br /> Scotch cottonthistle Onopordum acanthium Introduced herbaceous species <br /> Reed canarygrass Phalaris arundinaceae Introduced herbaceous species <br /> Annual rabbitsfoot grass Polypogon monspeliensis Introduced herbaceous species <br /> Plains cottonwood Populus deltoides ssp.Monolifera Native tree <br /> Curly dock Rumex crispus Introduced herbaceous species <br /> Peach-leaf willow Salix amygdaloides Native tree <br /> Coyote willow Salix exigua Native tree <br /> Hardstem bulrush Schoenoplectus acutus Native herbaceous species <br /> Common threesquare Schoenoplectus pungens Native herbaceous species <br /> Tall tumblemustard Sisymbrium altissimum Introduced herbaceous species <br /> Buffalo-bur Solanum rostratum Introduced herbaceous species <br /> Tamarisk Tamarix chinensis Introduced herbaceous species <br /> Dandelion Taraxacum officinale Introduced herbaceous species <br /> Narrowleaf cattail Typha angustifolia Introduced herbaceous species <br /> Broad-leaf cattail Typha latifolia Introduced herbaceous species <br /> American elm Ulmus americana Native tree <br /> American speedwell Veronica americana Native herbaceous species <br /> Seven main cover types were observed during the field survey and are shown in Figure 3: forested <br /> riparian floodplain, mowed grassland, fallow corn field, invasive annual grassland, invasive <br /> annual/biannual forbland, and riparian/herbaceous wetland. Desktop analysis indicated that shortgrass <br /> prairie would be the dominant native ecosystem type in the Project area under natural conditions. No <br /> 16 Tucson South Sand and Gravel Mine—Brighton,Colorado <br />