NPSpecies

Data Source: BioBlitz, 1997-Chain Bridge Flats;Cranberry Meadows, 1997;TNC, 1999; Wiegand, 1999; Wiegand, 2001; Wiegand, 2001b; ;;

Data Source: Helen Hamilton

see comments; Data Source: Helen Hamilton

Park Species Detail: Wiegand, 2001: Plant species documented in the survey area (from Sandy Hook, Maryland to District of Columbia line) during this survey. Cranberry Meadows, 1997: Occasional, Chain Bridge Flats above Arizona Bridge; Common, Chain Bridge Flats below Chain Bridge; Abundant, Chain Bridge Flats above Chain Bridge, #1660; Abundant, Chain Bridge Flats above tailrace. BioBlitz, 1997-Chain Bridge Flats: Little Falls & upper Chain Bridge, Allen Belden, VA NHP. Rocks, Pools, Abundant - more so downstream - around small pools in rocks. Wiegand, 2001b: A previously reported occurrence for Flattened spikerush (Eleocharis compressa), listed as a highly rare plant species in D.C., was successfully updated during 1999-2000 feld surveys. Several hundred, and potentially many more, fruiting culms were growing in sandy substrate. Suitable habitat for flattened spikerush is abundant in the vicinity, so this occurrence could be more extensive than reported here.Status surveys for this species are highly recommended to fully determine its current status at Chain Bridge Flats Survey Site. Found at 2 sites. A Highly Rare plant species known to occur within the District of Columbia portion of LOCO (along the C&O Canal NHP and Potomac River from the Maryland line to Key Bridge, Washington, D.C.) Also a listed species in Maryland. Wiegand, 1999: Plant species documented in the survey area (from Great Falls, Maryland, downriver to the District of Columbia) during this survey. Currently listed in Maryland as endangered or endangered/extirpated., Park Species Data Source: BioBlitz, 1997-Chain Bridge Flats;Cranberry Meadows, 1997;TNC, 1999;Wiegand, 1999;Wiegand, 2001;Wiegand, 2001b;