NPSpecies

Data Source: BioBlitz, 1997-Chain Bridge Flats;Cranberry Meadows, 1997;Bartgis, 1993;Boone, 1986;Maxon, 1935;TNC, 1999; Terrell, 1970;Thomas, 1969; Wiegand, 1999; Wiegand, 2001; Wiegand, 2001b; "Wiegand, 1995";

Data Source: Helen Hamilton

see comments; Data Source: Helen Hamilton

Park Species Detail: Wiegand, 2001: Four (4) new occurrences for Wild false indigo (Baptisia australis) were documented during 1999-2000 field surveys from Sandy Hook, Maryland, to District of Columbia line. Another nineteen (19) previously reported occurreences were successfully updated. Most of these occurrences consist of very small groups of plants ranging in size from one to twelve individuals. Large, viable occurrences for wild false indigo were documented at two sites. More than 100 plants grow on prairie and savanna habitats at Rocky Islands, and more than 1,000 plants grow in similar habitat on the flats at Little Falls just above the District of Columbia line . The occurrences for wild false indigo in the Potomac Gorge account for more than 95% of this species currently reported for Maryland. Terrell, 1970: Scarce; Along river in areas 1 (Beginning of Canal in Georgetown to Chain Bridge, D. C.), 2 (Chain Bridge to Lock 10 parking area opposite Plummer's Island); rocky slope at Great Falls (area 6). Fl. Late May. Cranberry Meadows, 1997: Common, Bridge Flats below Chain Bridge; and Common, Chain Bridge Flats above Chain Bridge. BioBlitz, 1997-Chain Bridge Flats: Mile Post 4 to AZ Ave on flats, woods, riverside, Warren Steiner, Jil Swearingen, Larry Morse; nice, uninvaded floodplain forest. Wet savannah, L.K.Thomas, Jr. Maxon, 1935: Species included on the strength of satisfactory records, but no specimen is preserved. Sporadic. Bartgis, 1993: State Threatened plant, in Potomac Fall-Line. Wiegand, 2001b: A previously reported occurrence for False blue indigo (Baptisia australis), listed as a highly rare plant species in D.C., was successfully updated during 1999-2000 field surveys. Several thousand plants, each supporting 5 to 15 stems, are widely dispersed The greater portion of the plants occur between Chain Bridge and the Maryland D.C. line. This is the largest and most viable occurrence for false blue indigo reported along the C&O Canal and Potomac River. Suitable habitat for false blue indigo 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. In Maryland, this species is listed as wild false indigo but it is the same plant. 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: Currently listed in Maryland as threatened and documented to occur in the gorge during this survey from Great Falls, Maryland, downriver to the District of Columbia line. Eight (8) new occurrences for the state-threatened Wild false indigo (Baptisia australis) were documented. Another ten (10) previously known sites were successfully updated. Most of these occurrences consist of small groups of plants. Large, viable occurrences for Wild false indigo were documented on the prairie and savanna habitats at Falls and Olmstead Islands, and on the scoured flats at Little Falls just above the District of Columbia line. Both of these are scattered occurrences totaling several hundred plants each. The occurrences for Wild false indigo in the Potomac Gorge account for more than ninety-five percent of this species known in Maryland. Wiegand, 1995: One new occurrence (one unconfirmed occurrence) documented in the survey area from Sandy Hook West to Cumberland, Maryland., Park Species Data Source: BioBlitz, 1997-Chain Bridge Flats;Cranberry Meadows, 1997;Bartgis, 1993;Boone, 1986;Maxon, 1935;TNC, 1999;Terrell, 1970;Thomas, 1969;Wiegand, 1999;Wiegand, 2001;Wiegand, 2001b;Wiegand, 1995;