]> GH barcode-02363071 United States of America Kansas 2 mi S, 3.5 mi W Garnett. W side of Cedar Valley Reservoir, ca 300-400 m NW of boat ramp. T21S R19E section 04 E1/2 of SW1/4. Polygonum hydropiper Linnaeus Linnaeus 2021-08-24 07:12:36 C. A. Morse