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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Myriophyllum alterniflorum

Myriophyllum alterniflorum DC.

Alternateflower Watermilfoil

Haloragaceae (Water Milfoil Family)

Synonym(s): Myriophyllum alterniflorum var. americanum

USDA Symbol: MYAL3

USDA Native Status: L48 (N), CAN (N), GL (N), SPM (N)

A submerged aquatic plant. Avoid using milfoil since it is often confused with the European which is invasive.


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Plant Characteristics

Duration: Perennial
Habit: Herb

Bloom Information

Bloom Color: Not Applicable


USA: CT , MA , ME , MI , MN , NH , NY , RI , VT , WI
Canada: NB , NL , NS , ON

Growing Conditions

Aquatic: yes

National Wetland Indicator Status

Status: OBL
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.

Additional resources

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


Record Modified: 2007-01-01
Research By: TWC Staff

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