NPSpecies

Data Source: Killip, 1931;Maxon, 1935;Wiegand, 1999; Wiegand, 2001; Wiegand, 1995; ;;

Data Source: Helen Hamilton

Data Source: Helen Hamilton

Park Species Detail: Killip, 1931: Several plants on sandbar at west end. Sept. 8. Reported previously but not represented in herbarium. Maxon, 1935: Rare. 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., Park Species Data Source: Killip,1931;Maxon, 1935;Wiegand, 1999;Wiegand, 2001;Wiegand, 1995;