Alternanthera philoxeroides (Mart.) Griseb.
ALLIGATOR WEED
  Dicotyledoneae   Amaranthaceae   Alternanthera

Alternanthera philoxeroides
© Copyright Matthew Ericson 2012 · 5
Alternanthera philoxeroides

Click on map or images to enlarge.
 
Alternanthera philoxeroides
© Copyright Matthew Ericson 2012 · 5
Alternanthera philoxeroides

Alternanthera philoxeroides
© Copyright Matthew Ericson 2012 · 5
Alternanthera philoxeroides

Alternanthera philoxeroides
© Copyright Matthew Ericson 2012 · 5
Alternanthera philoxeroides

Alternanthera philoxeroides
© Copyright Matthew Ericson 2012 · 5
Alternanthera philoxeroides

Alternanthera philoxeroides
© Copyright Matthew Ericson 2012 · 5
Alternanthera philoxeroides
17 thumbnails  •  slide show
IDnature guide
Names
Scientific source:

Supported by
Associates · map
FamilyScientific name @ source (records)
Delphacidae  Megamelus aestus @ UDCC_TCN (1)
Megachilidae  Coelioxys sayi @ BBSL (1)

Following modified from Flora of Taiwan, National Taiwan University
   
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&pull 20q v4.662 20091102: Error 301 Moved Permanently http://tai2.ntu.edu.tw/udth/bin/fot1.exe/browse?bid=2&page=395

Following modified from Plants Database, United States Department of Agriculture
   
Top | See original

http://plants.usda.gov/java/profile?symbol=Alph ---> https://plants.usda.gov/java/profile?symbol=Alph
https://plants.usda.gov/java/profile?symbol=Alph ---> http://plants.usda.gov/core/profile?symbol=Alph
http://plants.usda.gov/core/profile?symbol=Alph ---> https://plants.usda.gov/core/profile?symbol=Alph
Link: Skip repetitive navigation links
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You are here: Home / Plant Profile

Alternanthera philoxeroides (Mart.) Griseb.
alligatorweed

Image of Alternanthera philoxeroides

General Information
Symbol: ALPH
Group: Dicot
Family: Amaranthaceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : L48   I
PR   I
Characteristics
Data Source and Documentation
About our new maps
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Alternanthera thumbnails at the Plants Gallery

Robert H. Mohlenbrock. USDA SCS. 1991. Southern wetland flora: Field office guide to plant species . South National Technical Center, Fort Worth. Provided by USDA NRCS Wetland Science Institute (WSI). Usage Requirements .

©Jeff McMillian. Provided by Almost Eden . United States, LA. Usage Requirements .

USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. Provided by NRCS National Wetland Team . Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
ACPH Achyranthes philoxeroides (Mart.) Standl.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Caryophyllidae
Order Caryophyllales
Family Amaranthaceae – Amaranth family
Genus Alternanthera Forssk. – joyweed
Species Alternanthera philoxeroides (Mart.) Griseb. – alligatorweed

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 .
Alabama alligatorweed Class C noxious weed
Arizona alligatorweed Prohibited noxious weed
Arkansas Alternanthera
alligatorweed Noxious weed
California alligatorweed A list (noxious weeds)
Florida alligatorweed, green lead plant Prohibited aquatic plant, Class 1
South Carolina alligatorweed Invasive aquatic plant alligatorweed, pigweed Plant pest
Texas alligatorweed Noxious plant
U.S. Weed Information
Alternanthera Alternanthera philoxeroides alligator weed This plant and the related entity italicized and indented above 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.
STATE Assorted authors. State noxious weed lists for 46 states . State agriculture or natural resource departments.
FLEPPC Florida Exotic Pest Plant Council. 1999. Invasive plant list . Florida Exotic Pest Plant Council. Florida.
SEEPPC Southeast Exotic Pest Plant Council. 1996. Invasive exotic pest plants in Tennessee (19 October 1999). Research Committee of the Tennessee Exotic Pest Plant Council. Tennessee.
SWSS Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM . Southern Weed Science Society. Champaign, Illinois.

Wetland Status

Interpreting Wetland Status

Top Level Regions
Caribbean OBL
North America
Arid West OBL
Atlantic and Gulf Coastal Plain OBL
Eastern Mountains and Piedmont OBL
Great Plains OBL
Midwest OBL
Western Mountains, Valleys, and Coast OBL

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (ALPH)
CalPhotos (ALPH)
Flora of North America (ALPH)
Integrated Taxonomic Information System (ACPH)
Integrated Taxonomic Information System (ALPH)
Jepson Interchange (University of California - Berkeley) (ALPH)
USF Atlas of Florida Vascular Plants (ALPH)
University of Tennessee Herbarium (Distribution) (ALPH)
Related Websites
Aquatic, Wetland and Invasive Plant Info. System: abstract & image (ALPH)
Florida Turf image (ALPH)
GU-Plant Threats to Pacific Ecosystems (ALPH)
New Zealand Environment Bay of Plenty: abstract & images (ALPH)
North Carolina Division of Water Resources information (ALPH)
TX-Biological Control of Weeds in Texas (TAMU) (ALPH)
Wetlands Not Weedlands (ALPH)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


 PLANTS Home | USDA.gov | NRCS | Site Map | Policies and Links
Accessibility Statement | Privacy Policy | Non-Discrimination Statement

Following modified from Taiwan Biodiversity National Information Network
   
Top | See original

&pull 20q v4.662 20091102: Error 500 Internal Server Error http://taibnet.sinica.edu.tw/eng/taibnet_species_detail.php?gen=Alternanthera&spe=philoxeroides

Following modified from Plants Database, United States Department of Agriculture
   
Top | See original

http://plants.usda.gov/java/profile?symbol=ALPH ---> https://plants.usda.gov/java/profile?symbol=ALPH
https://plants.usda.gov/java/profile?symbol=ALPH ---> http://plants.usda.gov/core/profile?symbol=ALPH
http://plants.usda.gov/core/profile?symbol=ALPH ---> https://plants.usda.gov/core/profile?symbol=ALPH
Link: Skip repetitive navigation links
USDA and NRCS Identifier NRCS Logo
USDA.gov Web Site PLANTS photo banner
PLANTS Home  about PLANTS  PLANTS Team  Partners of PLANTS  What  National Plant Data Team Web Site  Help using PLANTS  Contact PLANTS
 
 Search the PLANTS Web site
 Name Search

 State Search
 Advanced Search
 Search Help
PLANTS Topics
 
 Alternative Crops
 Characteristics
 Classification
 Cover Crops
 Culturally Significant
 Distribution Update
 Documentation
 Fact Sheets & Plant Guides
 Introduced, Invasive, and Noxious Plants
 Threatened & Endangered
 Wetland Indicator Status
 
PLANTS Image Gallery
 
 50,000+ Plant Images
 
Download PLANTS data
 
 Complete PLANTS Checklist
 State PLANTS Checklist
 Advanced Search Download
 Symbols for Unknown Plants
 NRCS State GSAT Lists
 NRCS State Plants Lists
 
Related tools
 
 Crop Nutrient Tool
 Ecological Site Information System
 PLANTS Identification Keys
 Plant Materials Web Site
 Plant Materials Publications
 USDA Plant Hardiness Map
 
 
You are here: Home / Plant Profile

Alternanthera philoxeroides (Mart.) Griseb.
alligatorweed

Image of Alternanthera philoxeroides

General Information
Symbol: ALPH
Group: Dicot
Family: Amaranthaceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : L48   I
PR   I
Characteristics
Data Source and Documentation
About our new maps
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Alternanthera thumbnails at the Plants Gallery

Robert H. Mohlenbrock. USDA SCS. 1991. Southern wetland flora: Field office guide to plant species . South National Technical Center, Fort Worth. Provided by USDA NRCS Wetland Science Institute (WSI). Usage Requirements .

©Jeff McMillian. Provided by Almost Eden . United States, LA. Usage Requirements .

USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. Provided by NRCS National Wetland Team . Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
ACPH Achyranthes philoxeroides (Mart.) Standl.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Caryophyllidae
Order Caryophyllales
Family Amaranthaceae – Amaranth family
Genus Alternanthera Forssk. – joyweed
Species Alternanthera philoxeroides (Mart.) Griseb. – alligatorweed

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 .
Alabama alligatorweed Class C noxious weed
Arizona alligatorweed Prohibited noxious weed
Arkansas Alternanthera
alligatorweed Noxious weed
California alligatorweed A list (noxious weeds)
Florida alligatorweed, green lead plant Prohibited aquatic plant, Class 1
South Carolina alligatorweed Invasive aquatic plant alligatorweed, pigweed Plant pest
Texas alligatorweed Noxious plant
U.S. Weed Information
Alternanthera Alternanthera philoxeroides alligator weed This plant and the related entity italicized and indented above 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.
STATE Assorted authors. State noxious weed lists for 46 states . State agriculture or natural resource departments.
FLEPPC Florida Exotic Pest Plant Council. 1999. Invasive plant list . Florida Exotic Pest Plant Council. Florida.
SEEPPC Southeast Exotic Pest Plant Council. 1996. Invasive exotic pest plants in Tennessee (19 October 1999). Research Committee of the Tennessee Exotic Pest Plant Council. Tennessee.
SWSS Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM . Southern Weed Science Society. Champaign, Illinois.

Wetland Status

Interpreting Wetland Status

Top Level Regions
Caribbean OBL
North America
Arid West OBL
Atlantic and Gulf Coastal Plain OBL
Eastern Mountains and Piedmont OBL
Great Plains OBL
Midwest OBL
Western Mountains, Valleys, and Coast OBL

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (ALPH)
CalPhotos (ALPH)
Flora of North America (ALPH)
Integrated Taxonomic Information System (ACPH)
Integrated Taxonomic Information System (ALPH)
Jepson Interchange (University of California - Berkeley) (ALPH)
USF Atlas of Florida Vascular Plants (ALPH)
University of Tennessee Herbarium (Distribution) (ALPH)
Related Websites
Aquatic, Wetland and Invasive Plant Info. System: abstract & image (ALPH)
Florida Turf image (ALPH)
GU-Plant Threats to Pacific Ecosystems (ALPH)
New Zealand Environment Bay of Plenty: abstract & images (ALPH)
North Carolina Division of Water Resources information (ALPH)
TX-Biological Control of Weeds in Texas (TAMU) (ALPH)
Wetlands Not Weedlands (ALPH)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


 PLANTS Home | USDA.gov | NRCS | Site Map | Policies and Links
Accessibility Statement | Privacy Policy | Non-Discrimination Statement

Following modified from Flora of North America
   
Top | See original

Link to Flora of North America home
 
All Floras       Advanced Search
FNA Vol. 4 Page 448 , 449 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 4 | Amaranthaceae | Alternanthera

3. Alternanthera philoxeroides (Martius) Grisebach, Abh. Königl. Ges. Wiss. Göttingen. 24: 36. 1879.

Alligatorweed

Bucholzia philoxeroides Martius, Beitr. Amarantac., 107. 1825; Achyranthes philoxeroides (Martius) Standley

Herbs, perennial, aquatic to semiterrestrial, stoloniferous, to 50 dm. Stems prostrate, forming mats, often fistulose, glabrous. Leaves sessile; blade narrowly elliptic, elliptic, or oblanceolate, 3.5-7.1 × 0.5-2 cm, herbaceous, apex acute to obtuse, glabrous. Inflorescences terminal and axillary, pedunculate; heads white, globose, 1.4-1.7 cm diam.; bracts not keeled, less than 1 /2 as long as tepals. Flowers: tepals monomorphic, white, lanceolate or oblong, 6 mm, apex acute, glabrous; stamens 5; pseudostaminodes ligulate. Utricles not seen. Seeds not seen.

Flowering early spring-summer. Ponds, ditches, streams, bayous; 0-200 m; introduced; Ala., Ark., Calif., Fla., Ga., Ill., Ky., La., Miss., N.C., S.C., Tenn., Tex., Va.; West Indies; native to South America.

Alternanthera philoxerioides is said to reproduce only vegetatively in North America. I have seen no fruit or seed.

Following modified from CalPhotos
   
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CalPhotos     Photo Database

 

Number of matches : 17
Query: SELECT * FROM img WHERE ready=1 and taxon like "Alternanthera philoxeroides%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3810 0044 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0064 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0067 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0062 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0063 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3810 0040 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3810 0043 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0058 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0060 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0061 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0066 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3810 0039 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3810 0045 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0065 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligatorweed
ID: 0175 3301 3810 0041 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3809 0059 [detail]
© 2001 CDFA

Alternanthera philoxeroides
Alternanthera philoxeroides
Alligator Weed
ID: 0175 3301 3810 0042 [detail]
© 2001 CDFA

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