]> GH barcode-01995845 United States of America Michigan Sand dune on the north side of Black Mallard River near Lake Huron east of Rt. 23, 1 mile south of Grace, Sect. 1, T36N, R2E Lithospermum caroliniense (J. F. Gmelin) MacMillan (J. F. Gmelin) MacMillan 2023-04-13 09:44:08 C. B. Hellquist