NPSpecies

Data Source: Bartgis, 1993;Killip, 1953; TNC, 1999; Wiegand, 1995;

Data Source: Helen Hamilton

Data Source: Helen Hamilton

Park Species Detail: Killip, 1953: Koellia virginiana of D. C. Flora; Aug. 17, 1951. Bartgis, 1993: State rare plant, in Potomac Fall-Line. Wiegand, 2001: Currently documented from Maryland but was not successfully updated at previously reported sites in the survey area (from Sandy Hook, Maryland, to District of Columbia line) during 1999-2000 field surveys. Wiegand, 1999: Currently documented from Maryland but not successfully updated at previously reported sites in the gorge during this survey from Great Falls, Maryland, downriver to the District of Columbia line. Wiegand, 1995: Two documentations in the survey area from Sandy Hook West to Cumberland, Maryland., Park Species Data Source: Bartgis, 1993;Killip, 1953;TNC, 1999;Wiegand, 1995; Wiegand, 2001;