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  1. Rorippa sylvestris

    Rorippa sylvestris is an invasive species of plant in the United States, likely entering from Europe before 1818 from ballast water and spreading throughout North America through contaminated nursery seed stock. Wikipedia

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  2. en.wikipedia.org

    Rorippa sylvestris (the creeping yellowcress, [1] keek, or yellow fieldcress; syn. Radicula sylvestris (L.) Druce [2]) is an invasive species [3] of plant in the United States, likely entering from Europe before 1818 from ballast water and spreading throughout North America through contaminated nursery seed stock. [4]
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  4. minnesotawildflowers.info

    Native to Europe and Asia and now widely established throughout North America, Rorippa sylvestris can be confused with the native annual Bog Yellow-cress (Rorippa palutris). Creeping Yellow-cress however is a perennial, forming dense colonies, its flowers are over twice the size of R. palustris, and its mature fruit longer and more slender. All ...
  5. illinoiswildflowers.info

    Rorippa sylvestris Mustard family (Brassicaceae) Description: This herbaceous perennial plant is ½-2' long, branching occasionally in the upper half. The lower stem of this plant has a tendency to sprawl along the ground in the absence of supportive vegetative, otherwise it is more or less erect. Both the lower and upper stems are glabrous ...
  6. plants.ces.ncsu.edu

    North Carolina Extension Gardener Plant Toolbox

    https://plants.ces.ncsu.edu › plants › rorippa-sylvestris

    Rorippa sylvestris. Common Name(s): Creeping Yellowcress; Fieldcress; Southern Yellowcress; Yellowcress; Yellow Fieldcress; Phonetic Spelling roh-RIP-ah sil-VES-tris Description. Yellow fieldcress (in the Brassicaceae family) is a perennial weed that spreads by creeping, white, fleshy roots which produce many new plants. Flowers are yellow.
  7. wric.ucdavis.edu

    The weed, creeping field cress (Rorippa sylvestris (L.) Besser) has been in the United State since about 1818 as an introduction from Europe. It has become more common in ornamental plantings over the years and has spread widely since introduction, probably through repeated introductions. It has
  8. misin.msu.edu

    Synonyms: Radicula sylvestris Common Names: Creeping yellow fieldcress, yellow fieldcress, keek Description: First discovered in the Great Lakes region in 1884 near Lake Ontario. Habit: Herbaceous, growing to about 0.7 ft. tall. Leaves: Young plants form basal rosettes.Lower leaves are oblong, up to 8 in. long and 0.75 in. wide with a compound look. Deeply divided into lobed with lobed or ...
  9. nas.er.usgs.gov

    In Germany, native Rorippa sylvestris hybridizes with non-native R. austriaca, forming Rorippa x armoracioides hybrids which appear to be more competitive/invasive than either of the parent species. Although both parents are present in the US and are likely to hybridize where they form contact zones, this potentially invasive hybrid has not yet ...
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