Vascular Plants of North Carolina
Account for Giant Salvinia + - Salvinia molesta   D.S. MitchellOnly member of Salvinia in NC.
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Section 2 » Order Hydropteridales » Family Salviniaceae
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AuthorD.S. Mitchell
DistributionSo far documented from New Hanover, Onslow, and Pender counties; at 4 sites, all in 2002. Specimens are at FLAS and NCU. Weakley (2018) lists 15 other counties!!

Native of Brazil; in N.A. recently established and spreading in many southern states.
AbundanceApparently well-established in NC, but colonies are being destroyed as they are found. It is a federal noxious weed species. As recently as 1993, FNA only mentions that this aggressive alien "represents a candidate for escape."
HabitatStagnant ponds, inundated ditches, etc.
Phenology
IdentificationThis is a floating aquatic species with elongate stems. The leaves occur in whorls of 3, 2 of them elliptical and floating, 1 finely dissected and suspended in the water; larger leaves are less than 1 inch long. The floating leaves have tiny bumps on their upper surface and often have a folded appearance, with a crease down the midrib.
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State RankSE *
Global RankGNR
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