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Scientific Name: |
Alternanthera philoxeroides (Mart.) Griseb |
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Common Name: |
Alligatorweed |
|
Family: |
Amaranthaceae (Amaranth) |
|
Class: |
Dicot |
|
Description: |
Emersed or submersed perennial, leaves opposite and simple, flowering
head of small white flowers borne in axils. |
|
US Distribution: |
Coastal states from Virginia to Texas |
|
Worldwide Distribution: |
Native to South America |
|
Ecology: |
Rooted in shallow submersed habitats to moist soil sites; may form
floating mats |
|
Economic Importance: |
Major nuisance to subtropical aquatic sites and wetland areas,
especially ditch and stream habitats |
|
Ecological Importance: |
Major impact on aquatic and wetland sites |
|
Notes: |
Some evidence exists for two biotypes with different responses to
biocontrol and chemical controls; aquatic form has a hollow stem. |
