''Tiedemannia filiformis'' (syn. ''Oxypolis filiformis'') is a species of flowering plant in the

carrot family Apiaceae or Umbelliferae is a family of mostly aromatic flowering plants named after the type genus '' Apium'' and commonly known as the celery, carrot or parsley family, or simply as umbellifers. It is the 16th-largest family of flowering plan ...

known by the common names water cowbane and water dropwort. It grows in

swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...

s, freshwater

wetlands A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...

, and along the borders of ponds in the

southeastern United States The Southeastern United States, also referred to as the American Southeast or simply the Southeast, is a geographical region of the United States. It is located broadly on the eastern portion of the southern United States and the southern por ...

, as far north as

Delaware Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacent Del ...

, as well as the northern

Bahamian pineyards The Bahamian pineyards are a tropical and subtropical coniferous forest ecoregion in the Bahamas and the Turks and Caicos Islands. Geography The Bahamian pineyards cover an area of . Pineyards are found on four of the northern islands in the Ba ...

the Bahamas The Bahamas (), officially the Commonwealth of The Bahamas, is an island country within the Lucayan Archipelago of the West Indies in the Atlantic Ocean, North Atlantic. It takes up 97% of the Lucayan Archipelago's land area and is home to ...

References

filiformis Flora of the Southeastern United States Flora of the Bahamas Plants described in 1788 Plants described in 2012 {{Apiaceae-stub