About Rorippa sylvestris (L.) Besser
Rorippa sylvestris (L.) Besser, commonly known as creeping yellowcress, keek, or yellow fieldcress, has the scientific synonym Radicula sylvestris (L.) Druce. It is classified as an invasive plant species in the United States. It is thought to have arrived in North America from Europe via ballast water before 1818, and spread across the continent through contaminated nursery seed stock.