]> GH barcode-02102585 United States of America Oklahoma marsh locally known as "Mayfield Flats" 0.25 miles west of O.U. Biol. Station Sec. 8, T8S, R5E Juncus effusus Linnaeus Linnaeus 2022-03-24 15:55:25 C. B. Hellquist & L. Crouch