NPSpecies

see comments; Data Source: Lea, 2000; Lea, 2001b;

Data Source: Helen Hamilton

Data Source: Helen Hamilton

Park Species Detail: Lea, 2000: Carex louisianica Bailey (Louisiana Sedge)A single collection of what is possibly this species (Lea 1201, Tawes) was made at Chain Bridge Flats during this study; the specimen may also be a depauperate C. lupulina. C. louisianica is not otherwise h o r n off the Coastal Plain in Maryland, [Bartonia, 2002: C. lousianica is primarily restricted to the Coastal Plain in Maryland.-HH] but is historically known from the nearby Anacostia River in the District of Columbia (Steele s.n.,U S). [Bartonia, 2002: and has been recently reported from the Piedmont of northern Virginia (G. Fleming, pers. Comm.-HH] It has been regarded as highly rare in Maryland (Maryland Natural Heritage Program, 1994) but is likely somewhat more common in the state. Wiegand, 2001b: * A previously reported occurrnce for Louisiana sedge (Carex louisianica), listed as a highly rare sedge species in D.C., was successfully updated during 1999-2000 field surveys. C. Lea (Pers.Comm. 1999) reported the species was scattered below Chain Bridge. No additional survey effort to relocate this species at Chain Bridge Flats was made during 1999-2000.Status surveys for Louisiana sedge are highly recommended to fully determine its current status at Chain Bridge Flats.Found at 1 site. 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 listed in Maryland., Park Species Data Source: Lea, 2000; Wiegand, 2001b;