NPSpecies

Data Source: BioBlitz, 1997-Chain Bridge Flats;Cranberry Meadows, 1997;Bilton, 1991 Maxon, 1935;Terrell, 1970;Wiegand, 2001; Wiegand, 2001b; ;

Data Source: Helen Hamilton

see comments; Data Source: Helen Hamilton

Park Species Detail: Terrell, 1970: Frequent in woods; areas 2 (2 (Chain Bridge to Lock 10 parking area opposite Plummer's Island)), 5 (Bear Island), 7 (Great Falls to Swain’s Lock), 9 (Pennyfield Lock to Seneca). Fl. From June but plants conspicuous in May. Cranberry Meadows, 1997: Abundant, Chain Bridge Flats above tailrace. BioBlitz, 1997-Chain Bridge Flats: Below Fletchers, Warren Steiner, Jil Swearingen. Wiegand, 2001b: Found in Fletchers Floodplain Survey Site. Found at 2 sites. A watch list (and otherwise uncommon) plant species known to occur within the District of Columbia portion of LOCO (along the C&O Canal NHP and Potomac River from the Maryland line to Key Bridge, Washington, D.C.), Park Species Data Source: BioBlitz, 1997-Chain Bridge Flats;Cranberry Meadows, 1997;Bilton, 1991-Ferry Hill;Maxon, 1935;Terrell, 1970;Wiegand, 2001;Wiegand, 2001b;