Native & Naturalized Plants of the Carolinas & Georgia


1309

Fern/Fern ally; Floating aquatic (rootless)
Annual/Perennial

Non-native: Brazil

Documented growing wild in GA NC SC

Rare. Considered a noxious aquatic weed

Look for it in still waters of farm ponds, calcareous seepage ponds, and other situations, per Weakley's Flora

map
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INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

 

Aquatic

LEAVES:
Two simple, floating emergent leaves; & a third, divided underwater leaf
Whorls of 3

FRUIT:

 

TO LEARN MORE about this plant, look it up in a good book!



Monilophytes (ferns): Leptosporangiate Ferns (true ferns): Salviniales

WEAKLEY'S FLORA (5/21/15):
Salvinia molesta   FAMILY Salviniaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Salvinia molesta   FAMILY Salviniaceae

SYNONYMOUS WITH Flora of North America
Salvinia molesta

(?) Salvinia adnata

 

COMMON NAME:
Giant Salvinia


Click or hover over the thumbnails to see larger pictures.

image of Salvinia molesta, Giant Salvinia

Keith Bradley    kab_s_molesta_78612

August        Quebec, Canada

image of Salvinia molesta, Giant Salvinia

Keith Bradley    kab_s_molesta_78612b

August        Quebec, Canada

image of Salvinia molesta, Giant Salvinia

Keith Bradley    kab_s_molesta_78618

August        Quebec, Canada

image of Salvinia molesta, Giant Salvinia

Keith Bradley    kab_s_molesta_78620

August        Quebec, Canada

image of Salvinia molesta, Giant Salvinia

Ted D. Center, USDA Agricultural Research Service, Bugwood.org    bug_0002132

Month Unknown        

Dense, rapidly growing surface mats block sun to bottom plants and animals, per Invasive Plants, Guide to Identification, Impacts and Control.


click here to see other plants that look similar to this COMPARE aquatic plants

image of Salvinia molesta, Giant Salvinia

Barry Rice, sarracenia.com, Bugwood.org    bug_5391745

Month Unknown        

Hairs of upper leaf w 4 branches joined at tips, forming a cage-like structure, per Weakley's Flora.

image of Salvinia molesta, Giant Salvinia

Barry Rice, sarracenia.com, Bugwood.org    bug_5391745b

Month Unknown        

Hairs on the leaf surface are shaped like egg beaters, per Invasive Plants, Guide to Identification, Impacts and Control.


click here to see other plants that look similar to this COMPARE Salvinia species

image of Salvinia molesta, Giant Salvinia

Robert Vidéki, Doronicum Kft, Bugwood.org    bug_5396833

Month Unknown        

Shade-grown leaves lie flat; sunlight and crowding cause crumpling, per Invasive Plants, Guide to Identification, Impacts and Control.

image of Salvinia molesta, Giant Salvinia

Robert Vidéki, Doronicum Kft, Bugwood.org    bug_5399577

Month Unknown        

image of Salvinia molesta, Giant Salvinia

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org    bug_5457880

Month Unknown        

Perhaps introduced as plants sold to aquarium and koi pond owners, per Invasive Plants, Guide to Identification, Impacts and Control.