''Najas filifolia'', the needleleaf waternymph, is an aquatic plant in the

Hydrocharitaceae Hydrocharitaceae is a flowering plant family including 16 known genera with a total of ca 135 known species (Christenhusz & Byng 2016), that including a number of species of aquatic plant, for instance the tape-grasses, the well known Canadia ...

. It is a rare and little-known species, known from only three counties (

Decatur County Decatur County is the name of various past and present counties in the United States, all named for Stephen Decatur: *Decatur County, Georgia *Decatur County, Indiana *Decatur County, Iowa *Decatur County, Kansas *Decatur County, Tennessee *Decatur ...

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

;

Santa Rosa County Santa Rosa County is a county located in the northwestern portion of the U.S. state of Florida. As of 2020, the population is 188,000. The county seat is Milton, which lies in the geographic center of the county. Other major communities within S ...

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

; and Leon County, Florida. It is unusual in the genus in bearing fruits that are recurved to crescent-shaped.Robert R. Haynes. 1985. A new species of ''Najas'' (Najadaceae) from the southeastern U.S.A. Brittonia. 37: 392-393.

References

filifolia Aquatic plants Flora of Florida Flora of Georgia (U.S. state) Plants described in 1985 {{Monocot-stub