]> GH barcode-01564691 United States of America Maryland 2 1/2 mi. N. of Bush River Station of Pa. R.R. in Bush River Potamogeton epihydrus var. nuttallii (Chamisso & Schlechtendal) Fernald (Chamisso & Schlechtendal) Fernald 2021-02-25 14:57:41 G. H. Shull