NPSpecies

Data Source: Cranberry Meadows, 1997

Data Source: Helen Hamilton

see comments; Data Source: Helen Hamilton

Park Species Detail: Terrell, 1970: Infrequent to frequent in woods; areas 1(Beginning of Canal in Georgetown to Chain Bridge, D. C.), 2 (Chain Bridge to Lock 10 parking area opposite Plummer's Island), 3 (Lock 10 to Carderock, north parking lot), 4 [Carderock to Cropley (parking area near Angler’s Inn)]. Fl. May. Cranberry Meadows, 1997: Occasional, Chain Bridge Flats below Arizona Bridge; Occasional, Chain Bridge Flats above Arizona Bridge; Occasional, Chain Bridge Flats above tailrace. Bilton, 1991: leaves only., Park Species Data Source: Maxon, 1935; Cranberry Meadows, 1997; Terrell, 1970; Bilton, 1991;