''Wolffia columbiana'', the Columbian watermeal,USDA PLANTS Profile for ''Wolffia columbiana''
Retrieved 2010-03-09 is a

perennial In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

aquatic plant in the subfamily

Lemnoideae Lemnoideae is a subfamily of flowering aquatic plants, known as duckweeds, water lentils, or water lenses. They float on or just beneath the surface of still or slow-moving bodies of fresh water and wetlands. Also known as bayroot, they arose fr ...

. This plant is distributed widely throughout

North North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography. Etymology T ...

, Central, and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

, and also occurs in

Curaçao Curaçao, officially the Country of Curaçao, is a constituent island country within the Kingdom of the Netherlands, located in the southern Caribbean Sea (specifically the Dutch Caribbean region), about north of Venezuela. Curaçao includ ...

References

Lemnoideae Flora of Western Canada Flora of Central America Flora of Southern America Flora of the Caribbean Freshwater plants Plants described in 1865 Flora of California Flora of Oregon Flora of the North-Central United States Flora of Colorado Flora of Texas Flora of the Southeastern United States Flora of the Northeastern United States Flora of Montana Flora of Ontario Flora of Quebec Taxa named by Gustav Karl Wilhelm Hermann Karsten {{Araceae-stub