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Caulerpa taxifolia (Vahl) C. Agardh
killer alga

General Information
Symbol: CATA5
Group: Green Algae
Family: Caulerpaceae
Growth Habit: Nonvascular
Native Status: L48   I
Other Common Names: caulerpa
Data Source and Documentation
Distribution Map
green distribution legend Present blank legend Absent/Unreported

See U.S. county distributions (when available) by clicking on the map or the linked states below:





Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Division Chlorophyta – green algae
Class Chlorophyceae
Order Caulerpales
Family Caulerpaceae
Genus Caulerpa J.V.F. Lamouroux – caulerpa
Species Caulerpa taxifolia (Vahl) C. Agardh – killer alga

Subordinate Taxa

This plant has no children

Legal Status

Noxious Weed Information
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds.
United States:
Noxious weed 1
Class A noxious weed 1
North Carolina
Class A noxious weed 1
Quarantine 1
South Carolina
Invasive aquatic plant
Plant pest 1
Class A noxious weed 1
1Mediterranean clone
U.S. Weed Information
Caulerpa taxifolia
killer algae
This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
US USDA, Animal and Plant Health Inspection Service (APHIS), Plant Protection and Quarantine (PPQ). 2012. Federal noxious weed list (1 February 2012). USDA, APHIS, PPQ. Washington, DC.
STATE Assorted authors. State noxious weed lists for 46 states. State agriculture or natural resource departments.



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover