| Specimen ID | 229839 |
| Group | Plants |
| Genus | Hydrilla |
| Species | verticillata |
| Subspecies | peregrina |
| Common Name | wandering hydrilla |
| State | MD |
| County | Harford |
| Locality | Concord Point, Havre de Grace, area of Susquehanna Flats, underwater deltaic system of the Susquehanna River, head of the Chesapeake Bay |
| Mapping Accuracy | Accurate |
| HUC8 Name | Gunpowder-Patapsco |
| HUC8 Number | 02060003 |
| HUC10 Name | Romney Creek-Chesapeake Bay |
| HUC10 Number | 0206000302 |
| HUC12 Name | Swan Creek-Chesapeake Bay |
| HUC12 Number | 020600030201 |
| Map | |
| Collection Year | 1990 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Reference 1 |
| Ref. Number: | 10458 |
| Author: | Posey, M.H., C. Wigand, and J.C. Stevenson |
| Date: | 1993 |
| Title: | Effects of an introduced aquatic plant, Hydrilla verticillata, on Benthic Communities in the Upper Chesapeake Bay. |
| Journal: | Estuarine, Coastal and Shelf Science |
| Volume: | 37 |
| Pages: | 539-555 |
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| Record Type | Literature |
| Freshwater/Marine | Freshwater-Brackish |
