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Alligatorweed (Alternanthera philoxeroides)

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Alligatorweed

(Alternanthera philoxeroides)

Pennsylvania

iMapInvasives

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Invertebrates

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Allegheny Crayfish

(Orconectes obscurus)

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Big Water Crayfish

(Cambarus robustus)

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Calico Crayfish

(Orconectes immunis

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White River Crayfish

(Procambarus acutus)