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Alligatorweed (Alternanthera philoxeroides)

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Alligatorweed

(Alternanthera philoxeroides)

Pennsylvania

iMapInvasives

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

Gallery of Invaders Photo credit: Illlinois State Museum

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Fish

Gallery of Invaders Photo credit: © FISHBIO

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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

Gallery of Invaders Photo credit: Wikimedia Commons

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Algae

Gallery of Invaders Photo credit: Texas Parks and Wildlife

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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