Random invasive species images that represents what NISIC does
USDA.gov NAL NISIC Sudden oak death Formosan subterranean termite Yellow star thistle Giant African snail Cactus moth Purple loosestrife
HomeAbout National Invasive Species Information Center (NISIC)News and EventscouncilHelpContact Us
 Search the National Invasive Species Information Center
   
Search all USDA
Advanced Search
Search Tips
Browse by Geography
United States
International
Browse by Subject
Aquatic Species
Plants
Animals
Microbes
Economic Impacts
Laws and Regulations
Manager's Tool Kit
Resource Library
 
You are here: Home / Aquatic Species / Species Profiles / Water Lettuce
Aquatic Species
  
Species Profiles

Water Lettuce

Water lettuce - Invasive.orgScientific name: Pistia stratiotes L. Royle

Common names: Water lettuce, tropical duckweed

Click image to enlarge

Native To: Unknown, possibly South America, Africa, or the U.S. (Dray et al. 1988)

Date of U.S. Introduction: First described in Florida in 1765; experts disagree as to whether water lettuce is native to the U.S. (Ramey 2001)

Images: Invasive.org and Google

Video: University of Florida - Water Lettuce (or click Play button below)

Means of Introduction: Unknown (possibly native to the U.S., or it may have arrived in ballast water) (Ramey 2001)

Impact: Grows into dense mats that clog waterways (Ramey 2001)

Current U.S. Distribution: Southern U.S., Eastern U.S.

U.S. States and U.S. National Parks Where Reported Invasive: Invasive Plant Atlas of the United States map

Management Plans: Aquatic Species

Selected Internet Resources:

Federal Government

Pistia stratiotes L.
Integrated Taxonomic Information System.
Taxonomy

Pistia stratiotes L. (Waterlettuce) - Aquatic Plant Information System (APIS)
DOD. USACE. Engineer Research and Development Center. Environmental Laboratory.
Identification/Description; Introduction History; Impacts; Habitat; Distribution; Dispersion; Controls

Pistia stratiotes Article Citation Search - AGRICOLA Database
USDA. National Agricultural Library.
Research; Special Note: NAL Catalog Search (resources)

Pistia stratiotes - Germplasm Resources Information Network (GRIN)
USDA. ARS. National Genetic Resources Program.
Taxonomy; Legal Aspects

Waterlettuce - Biological Control of Invasive Plants in the Eastern United States (Aug 2002)
BugwoodWiki.
Published by: USDA. Forest Service. Publication FHTET-2002-04.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls

Plant Profile for Pistia stratiotes - PLANTS Database
USDA. NRCS. National Plant Data Center.
Taxonomy; Photographs; Distribution; Legal Aspects

Back to Top
State Government

Weed Alert: Water-lettuce (PDF | 408 KB)
Florida Department of Environmental Protection. Bureau of Invasive Plant Management.
Identification/Description; Photographs; Illustrations; Introduction History; Impacts; Distribution

Water-lettuce: Pistia stratiotes
Florida Fish and Wildlife Conservation Commission.
Identification/Description; Photographs; Illustrations; Introduction History; Impacts; Habitat

Invasive Water Lettuce Harms Bay Grasses And May Impede Boating
Maryland Department of Natural Resources.
Photographs; Impacts

Water Lettuce - Literature Review (PDF | 349 KB)
Wisconsin Department of Natural Resources.
Photographs; Impacts; Habitat; Life Cycle; Distribution; Dispersion; Controls; Legal Aspects

Back to Top
University/Academic

Pistia stratiotes (Water lettuce) - Invasive Plant Atlas of New England (IPANE)
University of Connecticut. Ecology and Evolutionary Biology.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Habitat; Distribution; Dispersion

Pistia stratiotes L. - Identification and Biology of Non-Native Plants in Florida's Natural Areas (PDF | 65 KB)
University of Florida.
Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Distribution; Dispersion

Pistia stratiotes
University of Florida. IFAS. Center for Aquatic and Invasive Plants.
Identification/Description; Photographs; Introduction History; Habitat; Distribution; Controls; Legal Aspects; Special Note: Video of Water Lettuce

Water Lettuce - Invasive Plant Atlas of the United States
University of Georgia. Center for Invasive Species and Ecosystem Health.
Taxonomy; Identification/Description; Photographs; Introduction History; Distribution

Water Lettuce - Aquaplant
Texas A&M University. Texas Agricultural Extension Service.
Identification/Description; Photographs; Illustrations; Introduction History; Controls

Water Lettuce - Biological Control of Weeds in Texas
Texas A&M University. Entomology.
Identification/Description; Introduction History; Impacts; Controls

Back to Top
International

Weed Identification: Water Lettuce
Australian Weeds Committee. Weeds Australia.
Identification/Description; Photographs; Distribution; Dispersion

Pistia stratiotes - Invasive Species Compendium
Centre for Agricultural Bioscience International (CABI).
Taxonomy; Identification/Description; Photographs; Impacts; Life Cycle; Habitat; Distribution; Controls

Water Lettuce
Environment Bay of Plenty Regional Council (New Zealand).
Identification/Description; Photograph; Impacts, Habitat; Distribution; Controls

Biological control of water lettuce, Pistia stratiotes
Commonwealth Scientific and Industrial Research Organisation (Australia).
Photographs; Introduction History; Impacts; Controls

Pistia stratiotes: Water lettuce
European and Mediterranean Plant Protection Organization.
Identification/Description; Impacts; Life Cycle; Habitat; Distribution; Dispersion; Controls

Weed Profile: Water lettuce
New South Wales Department of Primary Industries (Australia).
Identification/Description; Photographs; Impacts; Distribution; Dispersion; Controls; Legal Aspects

Water lettuce - Invasive Plants and Animals Fact Sheet (PDF | 229 KB)
Queensland Department of Primary Industries and Fisheries (Australia).
Identification/Description; Photographs; Impacts; Life Cycle; Habitat; Controls; Legal Aspects

Water Lettuce
Southern Tablelands and South Coast Noxious Plants Committee (Australia).
Identification/Description; Photographs; Impacts; Habitat; Dispersion; Controls

Pistia stratiotes (aquatic plant) - ISSG Global Invasive Species Database
World Conservation Union. Invasive Species Specialist Group.
Identification/Description; Photographs; Impacts; Life Cycle; Habitat; Distribution; Dispersion; Controls

Back to Top
Organizations

Water lettuce
Guide to Invasive Plants of the Galveston Bay Area.
Identification/Description; Photographs; Introduction History; Impacts; Habitat; Distribution; Dispersion; Controls

Invader of the Month - Water Lettuce (Jan 2008)
Maryland Invasive Species Council.
Identification/Description; Photographs; Introduction History; Impacts; Controls

Pistia stratiotes
Pacific Island Ecosystems at Risk.
Identification/Description; Photographs; Habitat; Distribution; Controls

Pistia stratiotes
TexasInvasives.org.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Distribution; Controls; Legal Aspects

Citations

Dray, F.A., C.R. Thompson, D.H Habeck, J.K. Balciunas, and T.D. Center. 1988. A survey of the fauna associated with Pistia stratiotes L. (waterlettuce) in Florida (PDF | 2.52 MB) U.S. Army Corps of Engineers Aquatic Plant Control Research Program. Technical Report A-88-6.

Ramey, V. 2001. Water lettuce. University of Florida Center for Aquatic and Invasive Plants.

Back to Top
Last Modified: Mar 14, 2014
 
Bookmark and Share
I Want To
    Read Recent News Articles
    Find Out What Species Descriptors Mean
    Locate Images
    Find Experts
   

More ...

Aquatic Species
    Species Profiles
    Databases
    Discussion Groups
    Economic Impacts
    Educational Resources
    Image Galleries
    Frequently Asked Questions
    Management
    Publications
    What You Can Do
Media Help
 To view PDF files you must have Adobe Acrobat Reader installed on your computer.

To view Flash files you must  have Macromedia Flash Player installed on your computer.

 NISIC Home | NAL Home | USDA | AgNIC | Agricultural Research Service | Web Policies and Important Links | Site Map
FOIA | Accessibility Statement| Privacy Policy | Non-Discrimination Statement | Information Quality | USA.gov | White House