178 



2. LUDWIGIANTHA. 



[Ltidzvigia, section Ludivigiantha T. & G. Fl. N. A. i : 526. 

 1840.] 



I. LUDWIGIANTHA ARCUATA (Walt.). 



Ludivigia araiata Walt. Fl. Car. 89. 1788. 

 Liidwigia pednncidosa Michx. Fl. Bor. Am. i: 88. 1803. 

 Istiardia pedimculosa DC. Prodr. 3: 60. 1828. 

 Swamps and marshes, Virginia to Florida. 



3. LUDWIGIA L. Sp. PI. 118. 1753. 

 Represented by fifteen species in the southern United States. 



