]> NEBC barcode-00459072 United States of America Massachusetts Charles River; abundant in shallow channel between island and mainland (TTOR Charles River Peninsula) at sharp bend in river. Approx. 1 river mile upstream from Central Ave. bridge, 0.2 mi w of end of Whitman Road Potamogeton natans Linnaeus Linnaeus 2016-10-31 11:21:36 L. A. Standley