]> GH barcode-01564679 United States of America Delaware along Route 113, 4 1/2 miles north of Milford. Potamogeton epihydrus var. nuttallii (Chamisso & Schlechtendal) Fernald (Chamisso & Schlechtendal) Fernald 2021-01-25 10:31:17 R. R. Tatnall