Alternanthera philoxeroides
Alternanthera philoxeroides
(alligatorweed)
Plants
Exotic
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101 results for Alternanthera philoxeroides (alligatorweed)
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Page:12345
Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1745630 VAArlington[No locality description provided]2020 02070010 Middle Potomac-Anacostia-Occoquan 
1751672 VAArlington[No locality description provided]2024 02070010 Middle Potomac-Anacostia-Occoquan 
1751673 VAArlington[No locality description provided]2024 02070010 Middle Potomac-Anacostia-Occoquan 
1676357 VAChesapeake[No locality description provided]2021 02080208 Hampton Roads 
1748137 VAChesapeake[No locality description provided]2022 03010205 Albemarle 
1749935 VAChesapeake[No locality description provided]2023 02080208 Hampton Roads 
1750017 VAChesapeake[No locality description provided]2023 03010205 Albemarle 
1751789 VAChesapeake[No locality description provided]2024 03010205 Albemarle 
1751608 VAChesapeake[No locality description provided]2024 03010205 Albemarle 
235553 VAChesapeakeDisturbed swamp along south side of Intracoastal Waterway, 0.1 mi E of Rt. 168 Bypass, just NW of Great Bridge.1995 03010205 Albemarleestablished
1748746 VAFairfax[No locality description provided]2022 02070010 Middle Potomac-Anacostia-Occoquan 
1750334 VAFairfax[No locality description provided]2023 02070010 Middle Potomac-Anacostia-Occoquan 
228725 VAFairfaxFairfax County1997 02070010 Middle Potomac-Anacostia-Occoquanestablished
235546 VAFairfax CityGreen Acres School near G.M.C. [George Mason University] campus1970 02070010 Middle Potomac-Anacostia-Occoquancollected
1674930 VAHampton[No locality description provided]2013 02080108 Lynnhaven-Poquoson 
1654690 VAHampton271 S Farm House Ln, Hampton, VA 23669, USA2018 02080108 Lynnhaven-Poquosonestablished
235550 VAHamptonGosnolds Hope Park, in drainage ditches near bike track1996 02080108 Lynnhaven-Poquosonestablished
1420946 VAIsle of WightBlackwater River, S of Pond B-22017 03010202 Blackwaterestablished
1420955 VAIsle of Wightconnection between Pond B-2 and Blackwater River2017 03010202 Blackwaterestablished
235548 VAIsle of WightCultivated field in Isle of Wight County1957  collected
233797 VAIsle of WightIsle of Wight1997 02080208 Hampton Roadsestablished
235547 VAIsle of WightSmithfield1956 02080206 Lower Jamescollected
232008 VAJames CityJames City County1997 02080206 Lower Jamesestablished
1748062 VANewport News[No locality description provided]2022 02080206 Lower James 
235551 VANewport NewsDrainage area near intersection of Todds Lane [Main st] and Beech Drive near elementary school.1992 02080206 Lower Jamesestablished
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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. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/18/2025].

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