NPSpecies

Data Source: Terrell, 1970;Wiegand, 1999; Wiegand, 2001; Wiegand, 1995;

Data Source: Helen Hamilton

Data Source: Helen Hamilton

Park Species Detail: Terrell, 1970: Scarce to infrequent in woods in areas 4 [Carderock to Cropley (parking area near Angler’s Inn)], 5 (Bear Island). Fl. Begins late May. Wiegand, 2001: Documented from Maryland during this survey from Sandy Hook, Maryland, to District of Columbia line.Watch List plant species, not officially listed by the State of Maryland nor by the Maryland Wildlife and Heritage Division. Wiegand, 1999: A Watch List species in Maryland, documented to occur in the gorge during this survey from Great Falls, Maryland, downriver to the District of Columbia line. Wiegand, 1995: Reported during this survey from Sandy Hook west to Cumberland. Hamilton, 2007: See Cubelium concolor, a synonym., Park Species Data Source: Terrell, 1970;Wiegand, 1999;Wiegand, 2001;Wiegand, 1995