]> GH barcode-02073360 United States of America Oklahoma west end of pond ca. 1.5 miles SE of last interchamge on I-35 ca, 5.0 miles south of Thackerville, Sec. 31, T9S, R2E Ceratophyllum demersum Linnaeus Linnaeus 2021-10-12 16:05:55 C. B. Hellquist