Rorippa sylvestris (Creeping Yellowcress [LINK: http://plants.usda.gov/java/profile?symbol=ROSY] Rorippa sylvestris at [LINK: http://plants.usda.gov/] USDA PLANTS Database, Keek, Yellow Fieldcress; syn. Radicula sylvestris (L.) Druce [LINK: http://www.herbarium.lsu.edu/factsheetfusion/Rorippa_sylvestris_(L.)_Besser.htm] Rorippa sylvestris at [LINK: http://www.herbarium.lsu.edu] The Herbarium of Louisiana State University) is an invasive species [LINK: http://www.invasive.org/browse/subject.cfm?sub=6330] Rorippa sylvestris at [LINK: http://www.invasive.org] Invasive.org) in the United States. References External links ·