alb3825882

Giant salvinia

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. What appears as roots are really 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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Titre:
Giant salvinia
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. What appears as roots are really 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.
Crédit:
Album / Science Source / Nature's Images, Inc.
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Modèle: Non - Propriété: Non
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Taille de l'image:
4431 x 2966 px | 37.6 MB
Taille d'impression:
37.5 x 25.1 cm | 14.8 x 9.9 in (300 dpi)