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Lemna aequinoctialis

Lemna aequinoctialis Welw.

Lesser Duckweed

Lemnaceae (Duckweed Family)

Synonym(s): Lemna angolensis, Lemna paucicostata, Lemna trinervis

USDA Symbol: LEAE2

USDA Native Status: L48 (N), HI (N), PR (N), VI (N)

Tiny floating plants often forming a carpetlike cover on the water’s surface.

Duckweeds are the simplest and among the smallest of flowering plants. They reproduce by making new plants from old ones. Duckweeds are especially relished by waterfowl, hence the common name.


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Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Floats on the surface of the water.
Fruit: Utricle.

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct


USA: AL , AR , AZ , CA , FL , GA , HI , IA , IL , KS , KY , LA , MO , MS , NC , NE , NM , SC , TN , TX , VA , WI
Native Distribution: Southern United States and southward; in East, Virginia south to Florida and north to southern Wisconsin and Nebraska; in Southwest, Texas west to California.
Native Habitat: Ponds, quiet water.

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Lemna aequinoctialis in USDA Plants
FNA: Find Lemna aequinoctialis in the Flora of North America (if available)
Google: Search Google for Lemna aequinoctialis


Record Modified: 2023-04-10
Research By: TWC Staff

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