]> GH barcode-01688315 United States of America Michigan O'Neal Lake Flooding ca. 8.0 miles SW of Mackinaw City, Secs. 2 & 3, T39N, R5W Potamogeton illinoensis Morong Morong 2021-02-11 14:17:13 C. B. Hellquist & R. R. Haynes