| Specimen ID | 256241 |
| Group | Plants |
| Genus | Myriophyllum |
| Species | heterophyllum |
| Common Name | variable-leaf watermilfoil |
| State | MA |
| County | Essex |
| Locality | Lake Gardner, NW of Amesbury |
| Mapping Accuracy | Accurate |
| HUC8 Name | Merrimack River |
| HUC8 Number | 01070006 |
| HUC10 Name | Powwow River-Merrimack River |
| HUC10 Number | 0107000614 |
| HUC12 Name | Powwow River |
| HUC12 Number | 010700061403 |
| Map | |
| Collection Month | 8 |
| Collection Year | 2008 |
| Year Accuracy | Actual |
| Potential Pathway | released aquarium | hitch hiker on small watercraft |
| Status | established |
| 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 |
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| Comments | lake drawdown possible control option |
| Record Type | Literature |
| Earliest Record | county |
| Freshwater/Marine | Freshwater |
| Specimen Impact | Impacts native plant life, affect fish habitat, choke boat motors, and become a nuisance and even danger to swimmers |
