]> GH barcode-01628558 United States of America Michigan marsh south of Black Mallard River at the mouth and Lake Huron, 1.0 mile south of Grace, along U.S. Rte. 23, Sec. 1, T36N, R2E Myriophyllum verticillatum Linnaeus Linnaeus 2021-02-09 10:02:27 C. B. Hellquist & R. R. Haynes