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Giant Salvinia - Salvinia molesta

Even the youngest leaves have the feature most important in identification – papillae.  These hair-like structures cover the entire upper leaf surface and are helpful for species identification.  Click Photo1 and Photo2 to see magnified views of the upper leaf surface.

 

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Floating leaves on juvenile plants are ovate to broadly elliptic in shape. The floating, horizontal stem (rhizome) is elongated on juvenile plants.

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