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Place
- North America68
- USA68
- Washington, D.C.[remove]68
- Contact UM Herbarium42
- Piedmont, Potomac River, 0.5 miles below Fletcher's Boathouse.2
- Anacostia River, along northeastern edge of Kenilworth Marsh.1
- Bank of Chesapeake and Ohio Canal opposite Chain Bridge Road, Washington.1
- Eastern branch of the Potomac river1
- Eckington1
- Glen Echo.1
- Kenilworth Swamp.1
- Kenilworth, along river trail just east of Kenilworth Marsh.1
- Kensington1
- Piedmont, District of Columbia, Potomac River, Roosevelt Island, south end.1
- Piedmont, Potomac River, 0.1 miles below Fletcher's Boathouse.1
- Potomac1
- Potomac Valley.1
- Potomac banks.1
- Potomac.1
- Rock Creek Park.1