]> GH barcode-01564681 United States of America Delaware outlet of Burton's Pond, about 5 miles southeast of Rehoboth Beach. Potamogeton epihydrus var. nuttallii (Chamisso & Schlechtendal) Fernald (Chamisso & Schlechtendal) Fernald 2021-01-25 15:32:28 R. McVaugh