]> GH barcode-01919310 United States of America Virginia Brent Marsh along the Potomac River east of Co. rt 633, S of Co. rt 611 & N of Co. rt 658. N of Aquia Creek Heteranthera reniformis Ruiz & Pavon Ruiz & Pavon 2020-10-30 14:09:52 C. N. Horn, M. T. Strong, & C. L. Kelloff