Hydrilla verticillata (L. f.) Royle
waterthyme
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Distribution:
Hydrilla verticillata (L. f.) Royle
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See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (AL, AZ, CA, CT, DC, DE, FL, GA, IA, LA, MD, ME, MS, NC, PA, SC, TN, TX, VA, WA) |
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Related Taxa:
Hydrilla verticillata (L. f.) Royle
View
14 genera in Hydrocharitaceae,
1 species in Hydrilla
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Classification:
Hydrilla verticillata (L. f.) Royle
Click on a scientific name below to expand it in the PLANTS
Classification Report.
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Noxious Weed Information:
Hydrilla verticillata (L. f.) Royle
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: |
| hydrilla |
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Noxious weed |
| Alabama: |
| hydrilla |
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Class A noxious weed |
| Arizona: |
| hydrilla, Florida-elodea |
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Prohibited noxious weed |
| California: |
| hydrilla |
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A list (noxious weeds) |
| hydrilla |
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Noxious aquatic weed |
| hydrilla |
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Quarantine |
| Colorado: |
| hydrilla |
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A list (noxious weeds) |
| Connecticut: |
| hydrilla |
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Invasive, banned |
| Florida: |
| hydrilla, Florida elodea |
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Prohibited aquatic plant, Class 1 |
| Maine: |
| hydrilla |
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Invasive aquatic plant |
| Massachusetts: |
| hydrilla |
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Prohibited |
| Mississippi: |
| hydrilla |
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Noxious weed |
| Nevada: |
| hydrilla |
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Noxious weed |
| New Mexico: |
| hydrilla |
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Class A noxious weed |
| North Carolina: |
| waterthyme |
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Class A noxious weed |
| Oregon: |
| hydrilla |
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"A" designated weed |
| hydrilla |
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Quarantine |
| South Carolina: |
| hydrilla |
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Invasive aquatic plant |
| hydrilla |
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Plant pest |
| Texas: |
| hydrilla |
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Noxious plant |
| Vermont: |
| hydrilla |
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Class A noxious weed |
| Washington: |
| hydrilla |
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Class A noxious weed |
| hydrilla |
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Wetland and aquatic weed quarantine |
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U.S. Weed Information:
Hydrilla verticillata (L. f.) Royle
Florida elodea
hydrilla
water thyme
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.
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Introduced Information:
Hydrilla verticillata (L. f.) Royle
This plant is introduced to some part of the PLANTS
Floristic Area, though it may be native in other parts. Click on
link below for a partial or complete list of PFA introduced plants.
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Wetland Indicator Status:
Hydrilla verticillata (L. f.) Royle
| Nat. Ind. |
Reg. 1 |
Reg. 2 |
Reg. 3 |
Reg. 4 |
Reg. 5 |
Reg. 6 |
Reg. 7 |
Reg. 8 |
Reg. 9 |
Reg. 0 |
Reg. A |
Reg. C |
Reg. H |
| OBL |
NO |
OBL |
NO |
NO |
NO |
OBL |
NO |
NO |
NO |
NO |
NO |
NO |
OBL |
Interpreting Wetland Indicator Status
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More Accounts and Images:
Hydrilla verticillata (L. f.) Royle
View photographs from CalPhotos.
View species account and distribution map from Flora of North America (FNA).
View species account and distribution from USF Atlas of Florida Vascular Plants.
View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 38974.
View species account and distribution map from Jepson Interchange (University of California - Berkeley).
View photographs and distribution from University of Tennessee Herbarium.
View photographs and distribution from University of Washington Burke Museum.
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Related Web Sites:
Hydrilla verticillata (L. f.) Royle
ABI-America's Least Wanted
Aquatic, Wetland and Invasive Plant Info. System: abstract & image
Aquatic, Wetland and Invasive Plant Info. System: abstract & image
CT-Invasive Plant Atlas of New England
CT-Invasive Plant Species Identification Sheets (USDA NRCS)
Cooperative Agriculture Pest Survey & NAPIS Page
FL-Florida Exotic Pest Plant Council
Hawaiian Ecosystems at Risk: Plant Threats to Pacific Ecosystems
NC-Aquatic Weed Fact Sheet (NCSU)
TNC Weeds on the Web
TX-Biological Control of Weeds in Texas (TAMU)
TX-Submerged Plants (TAES)
VA-Invasive Alien Plant Species of Virginia
WA-King County Noxious Weeds
WA-NonNative Freshwater Plants
Western Aquatic Plant Management Society
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