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Alligatorweed (Alternanthera philoxeroides)

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Alligatorweed

(Alternanthera philoxeroides)

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Pennsylvania

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    Found an invasive species? Register for a free login account, or submit a public report.

    Gallery of Invaders

    Login to Pennsylvania iMapInvasives to view distribution data for many

    of the species listed in the Gallery of Invaders.

    Aquatic & Facultative Plants
    Aquatic & Facultative Plants

    Gallery of Invaders Photo credit: Chris Evans, University of Illinois, Bugwood.org

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    Aquatic & Facultative Plants
    Invertebrates
    Invertebrates

    Gallery of Invaders Photo credit: Illlinois State Museum

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    Invertebrates
    Fish
    Fish

    Gallery of Invaders Photo credit: © FISHBIO

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    Fish
    Reptiles & Amphibians
    Reptiles & Amphibians

    Gallery of Invaders Photo credit: John White, Virginia Herpetological Society, CalPhotos

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    Reptiles & Amphibians
    Birds & Mammals
    Birds & Mammals

    Gallery of Invaders Photo credit: Toxic Web, https://flic.kr/p/G15R7G

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    Mammals & Birds
    Pathogens
    Pathogens

    Gallery of Invaders Photo credit: Wikimedia Commons

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    Pathogens
    Algae
    Algae

    Gallery of Invaders Photo credit: Texas Parks and Wildlife

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    Algae
    Pennsylvania's Field Guide to Aquatic Invasive Species

    Species profiles provided in the Gallery of Invaders originate from Pennsylvania's Field Guide to Aquatic Invasive Species (Second Edition 2015) and the Mid-Atlantic Field Guide to Aquatic Invasive Species, publications by Pennsylvania Sea Grant and

    The Pennsylvania State University.

    Pennsylvania's Field Guide to Aquatic Invasive Species

    The Pennsylvania iMapInvasives Program is a partnership of the Western Pennsylvania Conservancy, the Pennsylvania Natural Heritage Program, and NatureServe.

    Funding for Pennsylvania iMapInvasives is provided by the Great Lakes Restoration Initiative.

    thumbnail_NatureServe new logo_H color (3).png
    Pennsylvania Natural Heritage Program, iMapInvasives partner
    Great Lakes Restoration Initiative logo, iMapInvasives funding source