]> GH barcode-01628554 United States of America Michigan O'Neal Lake Flooding ca. 8.0 miles SW. of Mackinaw City, Secs. 2 & 3, T39N, R5W Myriophyllum verticillatum Linnaeus Linnaeus 2021-02-09 09:56:52 C. B. Hellquist & R. R. Haynes