Alternanthera philoxeroides
Alternanthera philoxeroides

1658 results for Alternanthera philoxeroides (alligatorweed)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
247685 CARiversideRiverside, Santa Ana River, under the NW end of the Market St. bridge1999 18070203 Santa Anaestablished
1438684 CARiversideRiverside: Santa Ana River, under the NW end of the Market St. bridge.1999 18070203 Santa Anaestablished
247684 CARiversideSanta Ana River bank at Anza Narrows Park (M McLean Anza Narrows Park)1996 18070203 Santa Anacollected
1438770 CARiversideSanta Ana River bank at Anza Narrows Park, 3 sqft mat.1996 18070203 Santa Anaestablished
1438945 CARiversideSanta Ana River under the northwest end of the Market Street bridge.1999 18070203 Santa Anaestablished
230301 CARiversidetownship near Riverside1996 18070203 Santa Anaestablished
228723 CASan BernardinoSanta Ana River, SW of intersection of interstates 215 and 10, south of San Bernardino1997 18070203 Santa Anaestablished
233029 LAAscensionAscension Parish1996 08070204 Lake Maurepasestablished
1387254 LAAscensionCRMS0061-F02VC2007 08070204 Lake Maurepasestablished
1387644 LAAscensionCRMS0061-F02VC2008 08070204 Lake Maurepasestablished
1387242 LAAscensionCRMS0061-F02VC2009 08070204 Lake Maurepasestablished
1387268 LAAscensionCRMS0061-F02VC2010 08070204 Lake Maurepasestablished
1387255 LAAscensionCRMS0061-F02VC2011 08070204 Lake Maurepasestablished
1387645 LAAscensionCRMS0061-F02VC2012 08070204 Lake Maurepasestablished
1387243 LAAscensionCRMS0061-F02VC2013 08070204 Lake Maurepasestablished
1387269 LAAscensionCRMS0061-F02VC2014 08070204 Lake Maurepasestablished
1387256 LAAscensionCRMS0061-F02VC2015 08070204 Lake Maurepasestablished
1387646 LAAscensionCRMS0061-F02VNW2007 08070204 Lake Maurepasestablished
1387244 LAAscensionCRMS0061-F02VNW2008 08070204 Lake Maurepasestablished
1387270 LAAscensionCRMS0061-F02VNW2009 08070204 Lake Maurepasestablished
1387257 LAAscensionCRMS0061-F02VNW2010 08070204 Lake Maurepasestablished
1387647 LAAscensionCRMS0061-F02VNW2011 08070204 Lake Maurepasestablished
1387245 LAAscensionCRMS0061-F02VNW2012 08070204 Lake Maurepasestablished
1387271 LAAscensionCRMS0061-F02VNW2013 08070204 Lake Maurepasestablished
1387258 LAAscensionCRMS0061-F02VNW2014 08070204 Lake Maurepasestablished

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.


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 [6/21/2024].

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