]> GH barcode-01564694 United States of America Maryland Wrights Mill 1.75 mi. n.e. by e. of Trappe Potamogeton epihydrus var. nuttallii (Chamisso & Schlechtendal) Fernald (Chamisso & Schlechtendal) Fernald 2021-02-25 20:03:15 E. C. Earle