]> GH barcode-01692502 United States of America Oklahoma locally known as "Mayfield Flats", 0.25 miles west of O.U. Biol. Station, Sec. 8, T8S, R5E Rorippa palustris (Linnaeus) Besser (Linnaeus) Besser 2020-04-15 10:32:58 C. B. Hellquist & L. Crouch