NPSpecies

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

Data Source: Helen Hamilton

see comments; Data Source: Helen Hamilton

Park Species Detail: Terrell, 1970: Infrequent in woods; areas 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)], 5 (Bear Island). Usually one one or a few plants present per location. Fl. At peak about early May. Without fruits this species may be distinguished from the following (Osmorhiza longistylis) by having stems with sprea Pubescence. Bilton, 1991: leaves only. BioBlitz, 1997-Chain Bridge Flats: Arizona RR Bridge to Fletchers Boat House, Martha Stauss, botanist. Forested Floodplain; common., Park Species Data Source: BioBlitz, 1997-Chain Bridge Flats;Bilton, 1991-Ferry Hill;Maxon, 1935;Terrell, 1970;Wiegand, 2001;