Polygonum cuspidatum Siebold & Zucc.
Japanese knotweed
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Images:
Polygonum cuspidatum Siebold & Zucc.
Click on a thumbnail to view an image, or
see all the Polygonum thumbnails at the PLANTS Gallery
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Synonyms:
Polygonum cuspidatum Siebold & Zucc.
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FAJA2 |
Fallopia japonica (Houtt.) Ronse Decr. |
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PLCU3 |
Pleuropterus cuspidatus (Siebold & Zucc.) Moldenke |
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PLZU |
Pleuropterus zuccarinii (Small) Small |
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POCUC2 |
Polygonum cuspidatum Siebold & Zucc. var. compactum (Hook. f.) L.H. Bailey |
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POZU |
Polygonum zuccarinii Small |
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REJA2 |
Reynoutria japonica Houtt. |
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Distribution:
Polygonum cuspidatum Siebold & Zucc.
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See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (AK, AR, CA, CO, CT, DC, DE, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, NE, NH, NJ, NY, OH, OK, OR, PA, RI, SC, SD, TN, UT, VA, VT, WA, WI, WV), CAN (BC, MB, NB, NF, NS, ON, PE, QC), FRA (SPM) |
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Related Taxa:
Polygonum cuspidatum Siebold & Zucc.
View
33 genera in Polygonaceae,
80 species in Polygonum
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Classification:
Polygonum cuspidatum Siebold & Zucc.
Click on a scientific name below to expand it in the PLANTS
Classification Report.
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Noxious Weed Information:
Polygonum cuspidatum Siebold & Zucc.
This plant and synonym italicized and indented below are 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: |
Japanese knotweed, Japanese bamboo |
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Class C noxious weed |
California: |
Japanese knotweed |
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B list (noxious weeds) |
Connecticut: |
Japanese knotweed |
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Invasive, banned |
Massachusetts: |
Japanese knotweed, Japanese arrowroot |
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Prohibited |
New Hampshire: |
Japanese knotweed |
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Prohibited invasive Species |
Oregon: |
Japanese knotweed |
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"B" designated weed |
Japanese knotweed |
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Quarantine |
Vermont: |
Fallopia japonica |
Japanese knotweed |
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Class B noxious weed |
Washington: |
Japanese knotweed |
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Class B noxious weed |
Japanese knotweed |
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Noxious weed seed and plant quarantine |
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U.S. Weed Information:
Polygonum cuspidatum Siebold & Zucc.
Japanese bamboo
Japanese knotweed
fleeceflower
Fallopia japonica
Japanese knotweed
This plant and the related entities and synonyms 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 |
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Assorted authors.
200_.
State noxious weed lists for 46 states.
State agriculture or natural resource departments.
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KY |
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Haragan, P.D.
1991.
Weeds of Kentucky and adjacent states: a field guide.
The University Press of Kentucky.
Lexington, Kentucky.
278pp.
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N'EAST |
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Uva, R.H., J.C. Neal, & J.M. DiTomaso.
1997.
Weeds of the Northeast.
Cornell University Press.
Ithaca, New York.
397pp.
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SEEPPC |
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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.
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WSWS |
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Whitson, T.D. (ed.) et al.
1996.
Weeds of the West.
Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming.
Laramie, Wyoming.
630pp.
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Introduced Information:
Polygonum cuspidatum Siebold & Zucc.
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:
Polygonum cuspidatum Siebold & Zucc.
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 |
UPL,FACU |
FACU- |
UPL |
FACU |
NO |
FACU |
NO |
NO |
NO |
FACU* |
NI |
NO |
NO |
NO |
Interpreting Wetland Indicator Status
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More Accounts and Images:
Polygonum cuspidatum Siebold & Zucc.
View photographs from CalPhotos.
View species account and distribution map from Flora of North America (FNA).
View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 20889.
View species account and distribution map from Jepson Interchange (University of California - Berkeley).
View species account from Native American Ethnobotany (University of Michigan - Dearborn).
View photographs and distribution from University of Tennessee Herbarium.
View species account, photographs, and distribution from University of Washington Burke Museum.
View species account and photographs from University of Wisconsin - Stevens Point Freckmann Herbarium.
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Related Web Sites:
Polygonum cuspidatum Siebold & Zucc.
CT-Invasive Plant Species Identification Sheets (USDA NRCS)
Canada-Invasive Exotic Plant Fact Sheets
Invasive Plant Atlas of New England
MA-Massachusetts Non-Native Plant Introductions
ME-Invasive Plant Fact Sheets (DNR)
MT-Center for Invasive Plant Management
NPCI Alien Plant Working Group: abstract & image
NY-Invasive Plant Council of New York State-Top 20
The Nature Conservancy: Wildland Weeds Management & Research Program
VA-Invasive Alien Plant Species of Virginia
WA-King County Noxious Weeds
WA-NonNative Freshwater Plants
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