Giant salvinia

Giant salvinia

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Credit: Nature's Images, Inc. /SCIENCE PHOTO LIBRARY

Caption: Giant salvinia, Salvinia molesta. A serious exotic, invasive pest species now widespread throughout the warmer regions of the US. It is a rootless, floating fern that can block sunlight and reduce dissolved oxygen levels. The roots are in reality modified leaves. Listed as a Federal Noxious Weed under the Plant Protection Act, which makes it illegal in the U.S. to import or transport between states without a permit. Photo Caddo Lake, TX.

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Keywords: aggressive plant, alien plant, aquatic plant, exotic species, floating fern, giant salvinia, habitat destruction, hand, illegal to import, introduced species, invasive, noxious weed, person holding, pest plant, plant, salvinia, salvinia molesta, scale, water fern, water plant, weed

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