Myriophyllum heterophyllum
Myriophyllum heterophyllum
(variable-leaf watermilfoil)
Plants
Native Transplant
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4 results for Myriophyllum heterophyllum (variable-leaf watermilfoil)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1891204 NHBelknap[No locality description provided]2025 01070001 Pemigewasset River 
1890329 NHBelknap[No locality description provided]2025 01070002 Winnipesaukee River 
1892152 NHGrafton[No locality description provided]2025 01080106 Black River-Connecticut River 
1891868 NHRockingham[No locality description provided; coordinates obscured by collector]2025 01060003 Piscataqua-Salmon Falls 

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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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. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/12/2026].

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