The Bugwood Network
alligatorweed
Magnoliopsida > Caryophyllales > Amaranthaceae > Alternanthera philoxeroides (Mart.) Griseb.
Synonym(s): pig weed, green lead plant

Identification, Biology, Control and Management Resources
Biological Control of Invasive Plants in the Eastern United States - USDA Forest Service

Selected Images from www.invasive.org
 
Number:4723003
Description:The white flowers are arranged in stalked, short, headlike spikes, and have a style.
Photographer:Gary Buckingham, USDA ARS
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
 
Number:1237068
Description:Flower
Photographer:Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
 
Number:4723002
Description:Opposite, non-succulent leaves
Photographer:USDA ARS Archives
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
 
Number:4723001
Description:Mats grow from shore and often cover entire waterways thereby disrupting water flow and causing flooding
Photographer:Gary Buckingham, USDA ARS
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
 
Description:Distribution Map
Source:USDA NRCS, The PLANTS Database, September, 2003

Invasive and Noxious Weed References

  • Invasive Exotic Plant Species of Management Concern, USDA Forest Service, Southern Region, May 18, 2001 - http://www.se-eppc.org/fslist.cfm
  • Arkansas State Plant Board, Regulations on Plant Diseases and Pests, September 1997 - http://www.plantboard.org/plant_pdfs/plantdiseasereg.pdf
  • Florida Prohibited Aquatic Plants, Florida Bureau of Invasive Plant Management, http://www.dep.state.fl.us/lands/invaspec/2ndlevpgs/perrules.htm
  • Proposed Exotic Pest Plant Species for Georgia, Georgia Exotic Pest Plant Council, August 12, 1999 - http://www.gaeppc.org/exotalk1.html
  • Mississippi's 10 Worst Invasive Weeds - http://msucares.com/pubs/misc/m1194.pdf
  • South Carolina Department of Agriculture. 1983. Rules and Regulations, Noxious Weeds. South Carolina Department of Agriculture. - http://plants.usda.gov/cgi_bin/state_noxious.cgi?statefips=45
  • Tennessee Exotic Pest Plant Council. Invasive Exotic Pest Plants in Tennessee. May 2001.
    http://www.se-eppc.org/states/TN/TNIList.html
  • Invasive Alien Plant Species of Virginia - http://www.dcr.state.va.us/dnh/invlist.pdf
Taxonomic Reference
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
http://plants.usda.gov/cgi_bin/topics.cgi?earl=plant_profile.cgi&symbol=ALPH

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USDA Forest ServiceUSDA APHIS PPQThe Bugwood Network University of Georgia Bargeron, C.T., D.J. Moorhead, G.K. Douce, R.C. Reardon & A.E. Miller
(Tech. Coordinators). 2003. Invasive Plants of the Eastern U.S.:
Identification and Control. USDA Forest Service - Forest Health
Technology Enterprise Team. Morgantown, WV USA. FHTET-2003-08.