Specimen Information

Myriophyllum heterophyllum
Myriophyllum heterophyllum
(variable-leaf watermilfoil)
Plants
Native Transplant

Specimen ID256241
GroupPlants
GenusMyriophyllum
Speciesheterophyllum
Common Namevariable-leaf watermilfoil
StateMA
CountyEssex
LocalityLake Gardner, NW of Amesbury
Mapping AccuracyAccurate
HUC8 NameMerrimack River
HUC8 Number01070006
HUC10 NamePowwow River-Merrimack River
HUC10 Number0107000614
HUC12 NamePowwow River
HUC12 Number010700061403
Map
+
Collection Month8
Collection Year2008
Year AccuracyActual
Potential Pathwayreleased aquarium | hitch hiker on small watercraft
Statusestablished
Reference 1
Ref. Number:18167
Author:Curley, K.
Date:2008
Title:Invasive weed jeopardizes Lake Gardner.
Publisher:The Daily News of Newburyport, Newburyport, MA.
Volume:2008
Issue:August 29
Commentslake drawdown possible control option
Record TypeLiterature
Earliest Recordcounty
Freshwater/MarineFreshwater
Specimen ImpactImpacts native plant life, affect fish habitat, choke boat motors, and become a nuisance and even danger to swimmers


Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/16/2024].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.