Ludwigia (plant)

Ludwigia
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Myrtales
Family:	Onagraceae
Genus:	Ludwigia; L.
Species
	See text.

For the genus of ammonites see Ludwigia (ammonite)

Ludwigia (primrose-willow, water-purslane, or water-primrose) is a genus of about 75 species of aquatic plants with a cosmopolitan but mainly tropical distribution.

Selected species

At current, there is much debate among botanists and plant taxonomists as to the classification of many Ludwigia species. Botanists from the US Department of Agriculture are currently doing genetic analyses on plants from the Western US and South America to better classify members of this genus.

The genus was named by Carolus Linnaeus after Christian Gottlieb Ludwig (1709-1773), a German botanist, who was apparently not amused by this honour.^{[citation needed]}